A customer asks for a DN50 flow meter.

The obvious response might be to quote a DN50 meter, but that leaves out the most important part of the application. Is the pipeline carrying liquid, compressed gas or steam? What is the normal flow rate? What temperature does the meter see? Is there a control valve immediately before the meter? Does the reading need to go to a PLC?

These details matter even more with a Vortex Flow Meter, because the same line size has very different flow ranges depending on whether the medium is liquid or gas.

For example, the Radical TechArt vortex flow meter catalogue gives a DN50 liquid range of 3 to 60 m³/h, while the gas range for the same DN50 size is 35 to 380 m³/h.

So ordering by pipe size alone is not enough.

What Is a Vortex Flow Meter?

The Radical TechArt vortex flow meter is an inline flanged flow measuring instrument designed for gas, liquid and vapor service. The brochure covers line sizes from 25 mm to 200 mm, with a process temperature range from minus 40°C to 320°C and several industrial signal outputs.

The product image on page 9 shows a stainless steel inline meter body with flanged process connections and a separate elevated electronic display/transmitter assembly.

The catalogue identifies the sensing arrangement as piezoelectric type, with a listed vibrating acceleration value of 0.2g.

For context, vortex flow meters generally measure flow by detecting vortices produced in the flowing medium. The supplied brochure does not provide the complete measurement principle or internal sensor construction, so model-specific working details should be confirmed from the final datasheet.

For a buyer, the more useful question is whether the meter fits the actual medium, flow range, temperature, pressure and piping arrangement.

Why One Vortex Meter Can Be Considered for Different Media

One of the key features highlighted in the brochure is multi-fluid measurement.

The listed medium specification includes:

• Gas
• Liquid
• Vapor

The features section also refers to liquids, gases and steam.

This makes the vortex category worth considering when a plant has different flow measurement points across utilities and process systems.

But this does not mean one configuration should automatically be used everywhere.

A liquid line, compressed gas line and steam line can have very different:

• Flow ranges
• Temperatures
• Pressures
• Straight-pipe requirements
• Material requirements
• Output and totalizing requirements

The technology may support different media, but the application still has to be selected individually.

Radical TechArt Vortex Flow Meter: Key Specifications

The technical table on page 10 provides the main selection parameters.

The features section also describes stainless steel body construction, low pressure drop, no moving parts and support for digital display with multiple outputs.

Flow Range Must Be Checked Against the Medium

This is one of the most important tables to check before requesting a vortex flow meter quotation.

These are the liquid and gas ranges given in the catalogue.

Notice how different they are.

This is why a purchase inquiry should ideally include:

minimum flow + normal flow + maximum flow + medium + pipe size

not only pipe size.

The brochure does not provide a separate steam flow chart, even though steam is referenced in the features. Steam sizing should therefore be confirmed from the application data and final product datasheet.

Process Temperature Matters, Especially for Steam and Hot Utility Lines

The main technical table specifies a process range of minus 40°C to 320°C.

This broad range is one reason vortex measurement may be considered for hot process and utility applications.

The ordering-code graphic on page 11 also shows temperature options identified as T1, T2 and T3. The image appears to indicate up to 150°C, 250°C and approximately 330°C respectively, while the main technical specification states 320°C.

Because those two values are not identical, the maximum permitted process temperature should be confirmed for the exact ordered version.

Do not choose the temperature version from the normal process temperature alone. Consider startup, cleaning, steam conditions and maximum expected process temperature.

4 to 20 mA, Pulse or RS485: Decide Before Ordering

The meter supports 4 to 20 mA, pulse and RS485 outputs.

4 to 20 mA

Choose this when the instantaneous flow reading needs to go to a PLC, controller, recorder or SCADA analog input.

Pulse Output

Pulse output is useful when the requirement involves flow counting or totalization using compatible PLC inputs, counters or monitoring equipment.

RS485

RS485 can support digital communication with an automation system.

Do not assume that RS485 alone guarantees communication with every PLC or SCADA system. Confirm the protocol, register map, baud rate and device configuration before ordering.

The meter uses a 24 V DC power supply, which is also convenient for many industrial control panels.

Installation Can Affect a Good Meter More Than Buyers Expect

Page 10 of the brochure dedicates a complete diagram to installation guidelines.

It shows different straight-pipe requirements for situations involving:

• Normal straight pipeline
• 90 degree elbow
• Concentric contraction
• Concentric expansion
• Two elbows in the same plane
• Two elbows in different planes
• Fully open valve
• Partially open valve

The diagram shows that the required upstream straight run changes significantly depending on what is located before the flow meter.

This is important.

A DN100 meter installed immediately after a disturbed piping section is not the same installation as a DN100 meter installed in a proper straight run.

The lower installation diagrams on page 10 also show correct and incorrect meter positions where gas bubbles or incomplete pipe filling may affect liquid measurement.

In practical terms, check the piping layout before selecting the installation location, not after the flow meter reaches the site.

Why No Moving Parts Matters for Maintenance

The features section lists No Moving Parts as one of the advantages of the vortex flow meter. It also describes the design as maintenance-friendly and lists low pressure drop.

For maintenance teams, fewer mechanical measurement components can reduce the type of wear associated with meters that depend on continuously rotating internal elements.

That does not mean every application becomes maintenance-free.

The installation still needs:

• Correct piping arrangement
• Suitable process conditions
• Correct electrical wiring
• Protection from excessive vibration
• Inspection according to the plant maintenance schedule

The brochure itself specifies vibration performance information, so site vibration should not be ignored during selection.

Common Mistakes to Avoid

Do This, Not That

Quick Vortex Flow Meter Selection Checklist

Before requesting pricing, collect these details:

1. Medium: liquid, gas, vapor or steam
2. Exact medium name
3. Pipe size
4. Minimum flow rate
5. Normal flow rate
6. Maximum flow rate
7. Normal and maximum temperature
8. Operating and maximum pressure
9. Required flange and pressure rating
10. Required output: 4 to 20 mA, pulse or RS485
11. Available 24 V DC power supply
12. PLC, SCADA or totalizer requirement
13. Available upstream and downstream straight pipe
14. Nearby elbows, reducers or valves
15. Site vibration conditions

These details make flow meter selection much faster and reduce the chance of buying a meter that physically fits the pipe but does not suit the process.

Specifications to Confirm Before Purchase

Before finalizing the vortex flow meter, confirm:

• Exact process medium
• Steam sizing data, where applicable
• Required operating flow range
• Exact accuracy for the selected medium
• Temperature version
• Maximum allowable process pressure
• Flange standard and rating
• Body and wetted material
• RS485 communication protocol
• Pulse output details
• 4 to 20 mA scaling
• Local display functions
• Totalizer requirement
• Installation straight length
• Maximum allowable vibration
• Calibration certificate requirement
• IP requirement
• Hazardous area requirement, if applicable

The supplied PDF does not specify all of these points, so they should be confirmed from the final product datasheet or quotation.

Why Buy a Vortex Flow Meter from Radical TechMart?

A vortex meter inquiry becomes much easier when the supplier understands what is actually happening in the process.

At Radical TechMart, the selection can be approached around the medium, flow range, temperature, pressure, piping layout and automation requirement rather than simply matching the existing pipeline diameter.

That is particularly useful for factories, utilities, OEMs, EPC contractors, system integrators and maintenance teams that need the flow signal connected to a PLC, SCADA system, totalizer or plant monitoring network.

Final Thoughts

A Vortex Flow Meter is worth considering when the application involves liquid, gas or steam flow and the process falls within the meter's operating range.

For the Radical TechArt range in the supplied PDF, the key points are DN25 to DN200 sizing, separate liquid and gas flow ranges, process temperatures up to the range stated in the selected configuration, 16 kg/cm² standard pressure with a 40 kg/cm² option, 24 V DC supply, IP65 protection and 4 to 20 mA, pulse and RS485 outputs.

But the most important part of vortex meter selection happens before the quotation.

Know what is flowing, how much is flowing and what the piping looks like around the meter.

FAQs

1. What can a vortex flow meter measure?

The supplied Radical TechArt brochure lists the medium as gas, liquid and vapor, while its features also refer to steam applications.

2. What line sizes are available?

The listed range is DN25 to DN200.

3. What is the accuracy of the vortex flow meter?

The technical specification gives ±1% to ±1.5% of reading. The features page also states accuracy up to ±1.5% of reading.

4. What outputs are available?

The meter supports 4 to 20 mA, pulse and RS485 outputs.

5. Can a vortex flow meter connect to PLC or SCADA?

The available outputs can support automation integration. For RS485, confirm the exact communication protocol and register information before final selection.

6. What is the process temperature range?

The main specification table lists minus 40°C to 320°C. Because the ordering section shows separate temperature versions, confirm the selected configuration before purchase.

7. Is the same flow range used for liquid and gas?

No. The catalogue provides separate liquid and gas flow ranges for every line size. For example, DN50 is listed at 3 to 60 m³/h for liquid and 35 to 380 m³/h for gas.

8. What information is required for vortex flow meter pricing?

Provide medium, pipe size, minimum and maximum flow, temperature, pressure, connection, output requirement and piping layout. For steam, provide the actual steam process conditions so the correct sizing can be confirmed.

A purchase inquiry for a flow meter often starts with pipe size.

“Need flow meter for 4 inch line.”

That is useful information, but for an electromagnetic flow meter it is nowhere near enough.

What is flowing through that 4 inch line? Is it raw water, wastewater, an acidic solution, brine, fruit juice, paper pulp or another liquid? Is the liquid conductive enough for electromagnetic measurement? What lining will be in contact with it? Which electrode material can tolerate the process? Does the flow signal need to go to a PLC through 4–20 mA, RS485 or HART?

Those questions matter because an electromagnetic flow meter is selected around the process liquid as much as the pipeline.

The Radical TechArt AEFM-100 shown in the supplied Flow Meter catalogue is a microcontroller based, full bore electromagnetic flow meter designed for conductive liquids and slurries in closed pipes. The catalogue lists sizes from 15 mm to 500 mm, conductivity from 10 μS/cm, bidirectional measurement and several material and output configurations.

That gives buyers flexibility, but only when the meter is configured for the actual application.

What Is an Electromagnetic Flow Meter?

The AEFM-100 is designed to measure the volumetric flow of conductive liquids and slurries.

The product image on page 5 shows the meter as a flanged full bore instrument, while page 6 describes it as an obstructionless design with no conventional mechanical flow measuring components in the flow path.

The basic measurement depends on a magnetic field and the voltage induced by the conductive liquid moving through that field. The catalogue explains that the induced voltage is generated across the pipe section filled by the magnetic field.

For a plant engineer, the practical meaning is more important than the physics alone:

• There are no moving measurement parts in the flow path
• The liquid needs sufficient conductivity
• Lining and electrode selection become important
• The meter measures volumetric flow
• The catalogue states that measurement is independent of flow pressure, temperature, density and viscosity

This is why electromagnetic flow meters are very different from mechanical meters that depend on a rotor, turbine or other moving element.

The First Question: Is Your Liquid Conductive?

This should be checked before discussing output signal, display or even price.

The AEFM-100 catalogue specifies a minimum conductivity of 10 μS/cm.

If the process liquid does not meet the required conductivity, the meter should not simply be selected because the pipe size matches.

This is also why electromagnetic flow meters are particularly relevant to many water based and process liquid applications, but should not be treated as a universal flow meter for every fluid.

Before ordering, provide the actual liquid name and conductivity information when available.

Where the AEFM-100 Is Used

The catalogue gives a fairly broad application list, which makes the intended use of this meter much clearer than a generic flow meter specification sheet.

Applications listed on page 7 include:

• Raw water
• Portable water
• Sea water
• Waste water
• Heat exchanger applications
• Industrial and domestic effluent
• Syrup
• Molasses
• Fruit juice
• Pulp and beverages
• Acidic and alkaline solutions
• Cooling water
• Brine solutions
• Paper pulp
• Black, green and white liquor
• Neutral salts solutions

Page 6 also lists industries such as effluent treatment, water supply, food and drug, chemical and fertilizer, dairy, sugar, textile processing, petrochemical, pharmaceutical and metallurgy.

The useful point here is that these applications are not all chemically similar.

A meter for cooling water should not automatically be configured with the same lining and electrode material as one intended for an acidic process solution.

Why Lining and Electrode Material Matter

This is probably one of the most important selection points in the entire catalogue.

The AEFM-100 ordering information provides several lining choices:

Electrode choices include:

The catalogue specifically notes that corrosion and abrasion resistance can be achieved by selecting suitable wetted materials, particularly the lining and electrode.

Why this matters in actual plant conditions

Imagine two customers asking for the same DN50 electromagnetic flow meter.

Customer A is measuring cooling water.

Customer B is measuring an acidic solution.

The line size may be identical, but the process compatibility requirement may not be.

This is where buying by model size alone becomes risky.

Before finalizing the flow meter, confirm:

1. Exact process liquid
2. Chemical concentration, where relevant
3. Normal and maximum temperature
4. Abrasive solids, if present
5. Required lining
6. Required electrode material

Material compatibility should be confirmed for the actual process before the final configuration is ordered.

Radical TechArt AEFM-100: Key Specifications That Actually Affect Selection

The catalogue provides the following main technical details for the electromagnetic flow meter.

There is one specification worth flagging rather than hiding.

Page 6 lists accuracy as ±0.5% of measured value, while the characteristics section on page 8 refers to ±0.3% to ±0.5% for acidic, alkali and neutral salt solutions with proper lining. Final accuracy for the ordered configuration should therefore be confirmed from the applicable datasheet or quotation.

Integral or Remote Display: Which One Makes More Sense?

The catalogue provides both integral and remote display versions.

The illustrations on page 7 show the difference clearly. In an integral configuration, the transmitter sits directly on the meter. In a remote arrangement, the sensor remains in the pipeline while the transmitter is installed separately.

Integral version

It keeps the installation compact because the electronics stay with the sensor.

Remote version

The catalogue specifies a standard remote cable length of 10 metres, while its ordering code shows cable options of 10, 20, 30, 50 and 80 metres.

Before ordering a remote unit, confirm the required cable distance rather than estimating it after installation.

4–20 mA, RS485, Pulse or HART?

The AEFM-100 provides several options for connecting flow measurement to an automation system.

4–20 mA

This is useful when instantaneous flow needs to be transmitted to an analog input on a PLC, controller, recorder or monitoring system.

The catalogue specifies an isolated 4–20 mA output.

Pulse

Pulse output is relevant when flow needs to be counted or totalized by compatible equipment.

This can be useful for batch quantities, consumption monitoring or flow totalization depending on the final system.

RS485

RS485 gives a digital communication option.

Do not stop at the word RS485 when specifying the meter. The exact communication protocol and register information should be confirmed before PLC or SCADA integration.

HART

HART is also listed as an available output option in the technical specification and ordering code.

For a project engineer, the output decision should be made from the control architecture, not from whichever version happens to be available first.

Empty Pipe Detection Is More Useful Than It Sounds

The catalogue includes empty pipe detection and states that empty or full pipe condition can be detected using capacitance technology.

Why does that matter?

An electromagnetic flow meter is intended to measure a liquid filled pipe. If the measurement tube is not properly filled, the flow reading may no longer represent the actual process condition.

Empty pipe detection gives the system another piece of information instead of treating every abnormal reading as real flow.

This can be particularly useful in water lines, transfer systems and processes where pipelines may periodically drain.

Forward and Reverse Flow Measurement

The brochure states that the AEFM-100 can measure both forward and reverse flow and lists a bidirectional measuring velocity range of 0.2 to 12 m/s.

That matters in systems where flow can genuinely reverse rather than always travelling in one direction.

The display features described in the catalogue also include flow rate, velocity, total flow, empty line and direction indication.

Flow Range: Check the Actual Process, Not Only the DN

Page 7 provides flow ranges from DN15 through DN500.

A few examples show how significantly capacity changes with pipe diameter:

The brochure identifies the wider flow range with velocity from 0.3 m/s to 10 m/s and provides a separate accuracy range based on 1 m/s to 6 m/s.

That distinction is important.

A pipeline may physically accept a particular DN meter, but the normal operating flow should also be checked against the range where the desired measurement performance is expected.

Installation: Leave Enough Straight Pipe

The installation diagram on page 6 specifies:

5 × D downstream

where D represents the flow meter diameter.

This should be considered during planning, not after the meter arrives at site.

If a DN100 meter is being installed in a crowded skid with an elbow immediately before the instrument, simply having enough flange to flange space does not mean the installation is ideal.

Before ordering, check:

• Available upstream straight length
• Available downstream straight length
• Nearby elbows
• Valves
• Pumps
• Reducers
• Actual mounting position

The physical location is part of flow meter selection.

Why No Moving Parts Can Reduce Maintenance

Page 8 highlights a major characteristic of the AEFM-100: no moving parts.

It also states that there is no pressure drop caused by choked flow components.

This can be useful in applications involving wastewater, pulp or other process liquids where mechanical components in the flow stream could increase maintenance requirements.

It does not mean the meter requires zero maintenance under every process condition. Correct grounding, electrode condition, lining compatibility, installation and process buildup still matter.

But there is no turbine or mechanical rotor to maintain inside the measuring section.

Common Selection Mistakes

Quick Selection Checklist

Before asking for an electromagnetic flow meter quotation, provide:

1. Process liquid
2. Conductivity, if known
3. Pipe size
4. Minimum flow
5. Normal flow
6. Maximum flow
7. Process temperature
8. Maximum pressure
9. Required lining material
10. Required electrode material
11. Integral or remote display
12. 230 V AC or 24 V DC power
13. Required 4–20 mA, pulse, RS485 or HART output
14. Required cable length for remote installation
15. Available upstream and downstream straight pipe
16. PLC or SCADA integration requirement

A message containing these details is far more useful than simply asking for an “electromagnetic flow meter price.”

Specifications to Confirm Before Purchase

The supplied catalogue provides substantial configuration information, but the following should still be confirmed for the final ordered meter:

• Exact chemical compatibility of lining
• Exact electrode compatibility
• Final accuracy for the selected configuration
• Process temperature for the chosen lining
• Grounding and earthing requirement
• Earthing ring requirement
• RS485 protocol details
• HART configuration
• Pulse output characteristics
• Exact flange dimensions
• Calibration certificate requirement
• Display configuration
• Engineering units
• Remote cable requirement
• Site IP requirement
• Any hazardous area requirement

The catalogue ordering code also provides options for flange material, lining, electrode, earthing ring, measuring tube, coil housing, cable length and output, so these should be treated as part of the application selection rather than as optional paperwork after the meter has been chosen.

Why Buy an Electromagnetic Flow Meter from Radical TechMart?

An electromagnetic flow meter should not be selected from DN and price alone.

The process liquid, conductivity, flow velocity, electrode, lining, output signal and installation arrangement all affect the final choice.

At Radical TechMart, the useful part of the buying process is helping customers work through those parameters before the meter reaches the site.

That is especially relevant for water treatment plants, OEMs, process industries, EPC contractors, system integrators and maintenance teams that may need the flow meter connected to a PLC, SCADA system, totalizer or plant monitoring network.

Final Thoughts

The Electromagnetic Flow Meter becomes a strong option when the application involves a suitable conductive liquid or slurry and the plant wants full bore flow measurement without moving measurement parts in the flow path.

For the Radical TechArt AEFM-100, the supplied catalogue highlights a 15 mm to 500 mm size range, minimum conductivity of 10 μS/cm, bidirectional flow measurement, multiple lining and electrode materials, integral or remote display, empty pipe detection, and 4–20 mA, RS485, pulse and HART output options.

But the most important part of the selection is not finding a meter that fits between two flanges.

It is finding the configuration that fits the liquid flowing through them.

FAQs

1. What liquids can an electromagnetic flow meter measure?

The AEFM-100 is specified for conductive liquids and slurries in closed pipes. Its catalogue applications include raw water, wastewater, sea water, cooling water, brine, syrup, molasses, fruit juice, pulp, acidic and alkaline solutions and neutral salt solutions.

2. What minimum conductivity does the AEFM-100 require?

The catalogue specifies a minimum conductivity of 10 μS/cm.

3. What sizes are available?

The AEFM-100 range covers nominal diameters from 15 mm to 500 mm.

4. Can this electromagnetic flow meter connect to a PLC?

Yes, the catalogue provides 4–20 mA, RS485, pulse and HART output options. Exact PLC communication and signal requirements should be confirmed before ordering.

5. Is the AEFM-100 available with a remote display?

Yes. Both integral and remote versions are listed. The standard remote cable is 10 metres, with additional cable length options shown in the ordering code.

6. Does an electromagnetic flow meter create pressure drop?

The AEFM-100 catalogue describes the meter as having no choked flow parts and states that there is no pressure drop from such obstructions.

7. Can it measure reverse flow?

Yes. The catalogue lists bidirectional measurement and specifically states that both forward and reverse flow can be measured.

8. How much straight pipe is required?

The catalogue installation diagram shows 10D upstream and 5D downstream. The actual installation should be checked against the final meter size and piping layout.

A plant may already have a working pipeline when someone asks, “Can we add flow measurement here?”

That simple request can become a much bigger job if the selected meter requires the line to be cut, flanges to be added, the process to be stopped, and the pipeline to be modified.

For many existing installations, that disruption is exactly what the maintenance team wants to avoid.

This is where a Clamp On Ultrasonic Flowmeter becomes interesting. The Radical TechArt model shown in the supplied Flow Meter catalogue uses external clamp on sensors and is specifically promoted for installation without cutting the pipe. The brochure lists measurement accuracy of 1% to 2%, pipe coverage from DN25 to DN2000, IP67 protection for the display and IP68 protection for the sensors.

Its biggest practical advantage is therefore not just ultrasonic measurement. It is the ability to add flow monitoring to an existing pipeline with much less mechanical modification.

What Is a Clamp On Ultrasonic Flowmeter?

A clamp on ultrasonic flowmeter measures flow using sensors mounted externally on the pipeline.

The product image on page 3 of the catalogue shows two sensors attached to the outside of a pipe, connected by cable to a separate display unit. Unlike an inline flow meter, the sensors do not need to be installed directly inside the flowing process.

This makes the design particularly useful when cutting an operating pipeline would be inconvenient, expensive, or difficult.

The brochure identifies the measuring principle as Transit Time. In general ultrasonic flow measurement, transit time technology compares the travel time of ultrasonic signals passing with and against the direction of flow. The difference is then used to determine flow velocity.

The brochure itself does not provide the detailed measurement algorithm, so exact calculation methods and configuration requirements should be confirmed from the product manual.

Why Clamp On Installation Matters in an Existing Plant

Consider an operating utility line that was installed years ago without a flow meter.

Adding a conventional inline instrument may involve:

• Stopping the process
• Draining the line
• Cutting the pipeline
• Welding or adding flanges
• Performing leak testing
• Coordinating shutdown work
• Recommissioning the line

With a clamp on ultrasonic system, the sensing arrangement sits outside the pipe.

The catalogue highlights this directly with the statement that installation is easy and there is no need to cut the pipe.

For maintenance and retrofit projects, that can be more important than one additional specification on the datasheet.

It is also useful when a plant wants to add monitoring to a line where permanent mechanical modification is undesirable.

Radical TechArt Clamp On Ultrasonic Flowmeter Specifications

Page 4 of the catalogue provides the main general specifications for the system.

The sensor table on the same page separately shows sensor temperature options of minus 30°C to 90°C and minus 30°C to 160°C. Because these values differ from the general temperature table, confirm the exact temperature range for the selected sensor configuration before placing an order.

Three Clamp On Sensor Sizes

One useful feature of this range is that the same type of flow measurement is offered for very different pipe diameters.

Small Clamp On Sensor

The small sensor covers DN25 to DN100.

Technical points to note:

• Measurement range: DN25 to DN100
• Temperature options shown: minus 30°C to 90°C and minus 30°C to 160°C
• Dimensions: 45 × 25 × 32 mm

Medium Clamp On Sensor

The medium sensor covers DN50 to DN700.

Technical points to note:

• Measurement range: DN50 to DN700
• Temperature options shown: minus 30°C to 90°C and minus 30°C to 160°C
• Dimensions: 64 × 39 × 44 mm

Large Clamp On Sensor

The large sensor covers DN300 to DN2000.

Technical points to note:

• Measurement range: DN300 to DN2000
• Temperature options shown: minus 30°C to 90°C and minus 30°C to 160°C
• Dimensions: 97 × 54 × 53 mm

The three sensor sizes and dimensions are taken directly from the sensor specification table on page 4.

Do Not Select the Sensor by Pipe Diameter Alone

Pipe diameter is the first filter, but it should not be the final selection.

Notice that the sensor ranges overlap.

For example, DN80 falls within the small sensor range of DN25 to DN100 and also within the medium sensor range of DN50 to DN700.

Similarly, DN500 falls within both the medium and large sensor ranges.

That means the pipe diameter alone may not tell you which sensor should finally be ordered.

Before selecting the exact sensor, confirm the application with the supplier, including pipe diameter, pipe material, wall condition, temperature, liquid, and installation arrangement.

4 to 20 mA, Pulse and RS485 Outputs

The catalogue lists three output options: 4 to 20 mA, pulse and RS485.

This makes the flowmeter relevant not only for local indication but also for automation projects.

4 to 20 mA

A 4 to 20 mA signal is useful when the flow value needs to be connected to an analog input on a PLC, controller, recorder, or monitoring system.

Pulse Output

Pulse output can be useful where flow needs to be counted or totalized by a compatible PLC, counter, or flow monitoring system.

The actual pulse characteristics should be confirmed before integration.

RS485

RS485 provides a route for digital communication.

However, one common mistake is assuming that “RS485” automatically means the flowmeter will communicate with any PLC.

Before final selection, confirm:

• Communication protocol
• Baud rate
• Device address settings
• Register information
• PLC or SCADA compatibility

The brochure confirms RS485 as an output, but it does not specify these protocol details.

230 V AC or 24 V DC: Choose According to the Installation

The flowmeter supports 230 V AC or 24 V DC power supply.

This gives the project engineer flexibility.

If the flowmeter is being integrated into an automation panel where 24 V DC instrumentation power is already available, 24 V DC may be convenient.

For other installations, 230 V AC may suit the available site supply.

Do not leave this choice until installation day. Confirm the required supply while placing the order.

IP67 Display and IP68 Sensors

Page 3 lists:

• Display protection class: IP67
• Sensor protection class: IP68

This difference is worth noticing.

The sensors mounted on the pipeline have a higher listed protection class than the display unit. The installation location for the display should therefore be evaluated separately rather than assuming that the entire system carries IP68 protection.

Where Clamp On Ultrasonic Flow Measurement Can Be Useful

The supplied ultrasonic section does not list approved liquids or specific industries, so application suitability should be confirmed before purchase.

In general industrial practice, clamp on ultrasonic measurement is often considered where a plant wants flow information from an existing liquid pipeline without installing a wetted inline sensor.

Typical situations can include:

• Existing utility pipelines
• Cooling and circulation systems
• Water distribution lines
• HVAC and chiller water circuits
• Flow monitoring during plant audits
• Retrofit instrumentation projects
• Large diameter pipelines
• PLC or SCADA flow monitoring projects

These are general use cases for the technology, not a model specific approved application list from the supplied catalogue.

Common Mistakes to Avoid

Quick Selection Checklist

Before requesting a quotation for a Clamp On Ultrasonic Flowmeter, keep these details ready:

1. Pipe outside diameter or nominal DN
2. Pipe material
3. Pipe wall thickness, if available
4. Process liquid
5. Normal process temperature
6. Required accuracy
7. Required output: 4 to 20 mA, pulse or RS485
8. Available power supply: 230 V AC or 24 V DC
9. Distance between sensors and display
10. PLC, SCADA or totalizing requirement
11. Indoor or outdoor installation condition
12. Required sensor temperature range

Providing this information is much more useful than simply asking for “ultrasonic flowmeter price.”

Specifications to Confirm Before Purchase

The catalogue provides the major product parameters, but the following details are not fully defined in the supplied ultrasonic section and should be confirmed before final selection:

• Approved liquid types
• Pipe material compatibility
• Pipe wall thickness limits
• Required straight pipe length
• Sensor mounting method
• Coupling material requirement
• Actual flow velocity range
• Minimum measurable flow
• RS485 protocol
• Pulse output specification
• 4 to 20 mA scaling
• Totalizer functions
• Displayed engineering units
• Calibration certificate availability
• Exact cable extension options
• Temperature version of the selected sensor
• Hazardous area approval, if required

Why Buy a Clamp On Ultrasonic Flowmeter from Radical TechMart?

A clamp on flowmeter is not a product that should be selected from pipe size and price alone.

The installation has to work with the actual pipe, temperature, signal requirement and control system.

At Radical TechMart, the useful part of the selection process is helping the customer narrow down the correct sensor range, power supply and output configuration before the product reaches site.

That is particularly useful for plant engineers, maintenance teams, OEMs, EPC contractors and system integrators who may need the flow signal connected to a PLC, SCADA system or other monitoring equipment.

Final Thoughts

The biggest reason to consider a Clamp On Ultrasonic Flowmeter is simple: you can add flow measurement without automatically turning the job into a pipeline modification project.

The Radical TechArt range shown in the supplied catalogue covers DN25 to DN2000, uses the Transit Time principle, provides ±1% to 2% stated accuracy, offers 4 to 20 mA, pulse and RS485 outputs, and supports 230 V AC or 24 V DC power. The brochure also offers small, medium and large clamp on sensor options for different pipe diameter ranges.

But the final selection should still be based on the actual pipe, liquid, temperature, sensor range and automation requirement.

A clamp on flowmeter saves you from cutting the pipe. Correct selection saves you from having to solve another problem after installation.

FAQs

1. What is a clamp on ultrasonic flowmeter?

A clamp on ultrasonic flowmeter measures flow using ultrasonic sensors installed on the outside of a pipeline. The Radical TechArt version uses the Transit Time principle and does not require the pipe to be cut for sensor installation.

2. What pipe sizes does the Radical TechArt clamp on flowmeter support?

The catalogue lists an overall pipe diameter range of 25 mm to 2000 mm.

3. What accuracy is specified?

The stated measurement accuracy is ±1% to 2%.

4. Can the ultrasonic flowmeter connect to a PLC?

The brochure lists 4 to 20 mA, pulse and RS485 outputs. These can support control and monitoring integration, but the exact PLC input and RS485 protocol requirements should be confirmed before ordering.

5. What power supply does it require?

The listed options are 230 V AC or 24 V DC.

6. What is the difference between the small, medium and large sensors?

The small sensor covers DN25 to DN100, the medium sensor DN50 to DN700, and the large sensor DN300 to DN2000.

7. Does installation require cutting the pipeline?

The brochure specifically states that installation does not require cutting the pipe.

8. What information should I provide before buying?

Provide pipe size, pipe material, wall thickness if available, liquid, temperature, output requirement, power supply and PLC or monitoring requirements. These details help determine the right configuration.

A common flow meter inquiry starts with something like, “I have a 2 inch pipeline, give me a flow meter.”

Pipe size is important, but it is not enough.

Two DN50 pipelines can have completely different operating flow rates. One application may normally run at 6 m³/h, while another may run at 35 m³/h. The process temperature, pressure, liquid condition, required output signal, PLC connection, and expected accuracy can also be different.

This is where many flow meter selections go wrong.

The Radical TechArt turbine flow meter range shown in the supplied brochure covers line sizes from 15 mm to 150 mm, with specified flow ranges for each diameter. It also supports 4 to 20 mA, RS485, and pulse outputs, making it suitable for applications where flow data needs to be taken beyond a local reading and used in a control or monitoring system.

The right way to choose a turbine flow meter is therefore to start with the actual process, not simply the existing pipe diameter.

What Is a Turbine Flow Meter?

A turbine flow meter is an inline instrument used to measure the flow rate passing through a pipeline.

The supplied Radical TechArt brochure shows a stainless steel, flanged turbine flow meter with an electronic transmitter or display assembly mounted above the meter body. The listed configuration is available from DN15 through DN150 and operates from a 24 V DC power supply.

The brochure focuses mainly on the product specifications rather than describing the internal measurement principle.

In general turbine flow meter design, flowing liquid drives an internal turbine or rotor. Rotor movement is detected and converted into a flow-related electrical signal. This is the general operating principle of this meter technology and should not be treated as a model-specific construction detail unless confirmed from the product datasheet.

For the buyer, the more important question is usually not how the rotor looks internally. It is whether the meter can handle the required flow, temperature, pressure, media, connection, and control-system interface.

Why Flow Range Matters More Than Many Buyers Expect

The brochure lists a measuring range for every nominal diameter.

These ranges are one of the most useful pieces of information in the brochure.

For example, suppose your pipeline is DN50 but your actual flow is only 2 m³/h. The listed DN50 meter starts at 4 m³/h. Simply matching the meter to the pipe diameter could therefore put the normal operating flow outside the stated range.

Before buying, collect three values:

1. Minimum expected flow
2. Normal operating flow
3. Maximum expected flow

Then compare all three with the meter's specified range.

That one check can prevent a large number of selection mistakes.

Radical TechArt Turbine Flow Meter: What the Specifications Mean

The brochure lists the following key specifications for the turbine flow meter.

Line size: 15 mm to 150 mm

This covers smaller process lines through larger industrial pipelines.

Do not use line size as the only selection parameter. Match the flow range as well.

Accuracy: ±1% of reading under standard conditions

The stated accuracy makes the meter suitable for applications where reasonably accurate flow monitoring is required.

However, actual performance also depends on correct meter sizing, installation, process conditions, and operation within the specified range.

Process temperature: minus 20°C to 150°C

This provides a relatively broad temperature window for industrial service.

The important point is to check the actual liquid temperature at the meter, including startup and abnormal operating conditions, rather than using only the normal process temperature.

Environmental temperature: minus 20°C to 50°C

This applies to the surrounding environment of the instrument.

A process liquid may be within specification while the electronics are exposed to excessive ambient heat. Installation location therefore matters.

Nominal pressure: 16 kg/cm²

The brochure lists nominal pressure at 16 kg/cm².

Before installation, the plant team should still confirm maximum operating pressure, possible pressure surges, and the required flange standard.

Flanged connection

The brochure specifies a flange connection and the product image on page 1 also clearly shows an inline flanged meter body.

Flanged construction is practical for permanent industrial pipeline installation and allows the meter to be removed during maintenance.

The exact flange standard and dimensions should be confirmed before ordering.

24 V DC power supply

A 24 V DC supply is convenient for industrial automation because this voltage is commonly available inside PLC and instrumentation panels.

Still, confirm available field power before finalizing the meter.

IP65 protection

The listed IP65 enclosure protection provides protection against dust ingress and water jets at the level defined by that rating.

It should not automatically be treated as suitable for submerged installation or every outdoor environment.

4 to 20 mA, RS485 or Pulse: Which Output Should You Choose?

Output selection is often more important than buyers initially expect.

The turbine flow meter brochure lists 4 to 20 mA, RS485, and pulse output options.

4 to 20 mA

Choose 4 to 20 mA when the flow value needs to be transmitted as an analog signal to a PLC, indicator, controller, recorder, or SCADA input system.

The control system scales the analog signal into engineering units such as m³/h.

RS485

RS485 is useful when digital communication is required.

Before ordering, do not assume that the word RS485 alone confirms compatibility with your PLC or SCADA system. Confirm the communication protocol, register details, baud rate, addressing, and integration documentation.

Pulse output

Pulse output is useful where flow needs to be counted or totalized.

It can be connected to a compatible counter, PLC high-speed input, batch controller, or monitoring system, depending on the actual pulse specification.

The brochure itself states that the available digital and pulse options can be used with data loggers, PLCs, and monitoring systems.

Where a Turbine Flow Meter Makes Sense

For turbine flow meters as a general technology, they are commonly considered for relatively clean liquid applications where a defined flow range and responsive measurement are required.

Possible applications can include:

• Process liquid flow monitoring
• Water and utility flow measurement
• Machine and OEM skid flow monitoring
• Cooling or circulation lines
• Filling and batching systems
• Production flow monitoring
• PLC-based flow indication and recording
• Flow totalization through pulse output

The supplied brochure does not specify particular liquids or industries for this turbine model, so media suitability should be confirmed before treating any of these as approved model-specific applications.

This point is particularly important with turbine technology because the condition of the fluid can affect the internal moving measurement components.

Key Factors to Check Before Selecting a Turbine Flow Meter

1. Actual flow range

Start here.

Do not select DN50 because the pipe is DN50. Confirm that minimum, normal, and maximum flow fall within the DN50 meter's listed 4 to 40 m³/h range.

2. Process media

The brochure identifies stainless steel construction but does not provide a detailed list of approved fluids.

Confirm chemical compatibility, cleanliness, viscosity, and whether suspended solids or contaminants are present.

3. Temperature

The listed process range is minus 20°C to 150°C. Make sure maximum operating and cleaning temperatures stay within the permitted range.

4. Pressure

The listed nominal pressure is 16 kg/cm². Consider both continuous pressure and possible system pressure spikes.

5. Output signal

Choose the output based on what will receive the signal.

For PLC analog monitoring, 4 to 20 mA may make sense. For totalization, pulse may be required. For digital communication, investigate the RS485 implementation.

6. Power supply

Confirm that 24 V DC is available at the installation point.

7. Installation environment

The brochure lists IP65 protection and an ambient range of minus 20°C to 50°C. Outdoor exposure, washdown conditions, hazardous-area requirements, and direct heat exposure should therefore be evaluated separately.

8. Material compatibility

The brochure's technical table lists body material as 304L, 306L. Because 306L is the grade printed in the supplied document, the exact required stainless steel grade should be confirmed with Radical TechArt before ordering rather than assuming another material grade.

Common Mistakes to Avoid

Quick Turbine Flow Meter Selection Checklist

Before asking for a quotation, keep these details ready:

1. Pipe size or DN
2. Minimum flow rate
3. Normal flow rate
4. Maximum flow rate
5. Process liquid
6. Process temperature
7. Maximum process pressure
8. Required output: 4 to 20 mA, RS485, or pulse
9. Available 24 V DC power
10. Required flange standard and connection details
11. PLC, SCADA, data logger, or totalizer requirement
12. Installation environment and enclosure requirement

With these details, product selection becomes much faster than simply sending a message saying, “Need turbine flow meter price.”

Specifications to Confirm Before Purchase

The brochure provides the main operating specifications, but several details should still be confirmed for the final application:

• Exact body and wetted-part material
• Exact stainless steel grade
• Approved process media
• Maximum fluid viscosity
• Allowable suspended particles or contamination
• Internal rotor and bearing materials
• Exact flange standard and rating
• Output wiring details
• RS485 communication protocol
• Pulse output characteristics
• Display functions
• Totalizer availability
• Calibration certificate requirement
• Required upstream and downstream straight pipe
• Hazardous-area or flameproof approval, if required
• Exact IP suitability for the installation

This is especially important because the brochure is a product overview, not a complete application datasheet.

Why Buy a Turbine Flow Meter from Radical TechMart?

A turbine flow meter should not be sold only by asking for the pipe size.

At Radical TechMart, the useful part of the selection process is matching the meter with the actual flow range, temperature, pressure, output requirement, and control system.

That is particularly relevant for OEMs, factories, system integrators, EPC contractors, maintenance teams, and instrumentation engineers who may need the meter to work with PLC, SCADA, data logging, or flow totalization systems.

The objective is simple: select the meter that fits the process rather than forcing the process to fit whatever meter happens to be available.

Final Thoughts

A Turbine Flow Meter can be a practical choice for industrial flow measurement, but correct sizing is what makes the difference between buying a flow meter and getting a usable measurement.

For the Radical TechArt range in the supplied brochure, the main selection points are the DN15 to DN150 size range, corresponding flow capacity, ±1% stated accuracy, minus 20°C to 150°C process temperature, 16 kg/cm² nominal pressure, 24 V DC supply, IP65 protection, and 4 to 20 mA, RS485, or pulse output options.

Before ordering, confirm the process media, flow range, output requirement, flange details, material compatibility, and installation conditions.

In flow measurement, the right meter is not selected from pipe size alone. It is selected from the complete process condition.

FAQs

1. What is the flow range of the Radical TechArt turbine flow meter?

The range depends on line size. The brochure starts at 0.6 to 6 m³/h for DN15 and goes up to 30 to 300 m³/h for DN150.

2. What accuracy is specified for the turbine flow meter?

The brochure states ±1% of reading under standard conditions. Actual installation and operating conditions should remain within the specified limits.

3. Can this turbine flow meter connect to a PLC?

The brochure lists 4 to 20 mA, RS485, and pulse outputs and states compatibility with PLCs and monitoring systems. Confirm the required PLC input and communication details before ordering.

4. What power supply does the turbine flow meter require?

The specified power supply is 24 V DC.

5. What is the maximum listed process temperature?

The brochure lists a process temperature range of minus 20°C to 150°C.

6. Is the turbine flow meter available with flange connection?

Yes. The brochure specifies a flanged connection, and the product image also shows an inline flanged body.

7. How do I select the correct turbine flow meter size?

Match your pipe size with the flow chart, then verify that your minimum, normal, and maximum flow all fall within the meter's specified range. Do not select based on pipe diameter alone.

8. What should I provide when asking for turbine flow meter price?

Provide line size, liquid, minimum and maximum flow, temperature, pressure, required output, power supply, flange details, and control-system requirements. This allows a supplier to recommend the appropriate configuration.

A level switch becomes difficult when the media is not simple water

Detecting a high or low level in a clean water tank is usually straightforward. The real selection problem starts when the same switch has to work with yoghurt, syrup, foam, powder, condensation, product coating or a hygienic process that gets cleaned regularly.

That is where buyers often make the wrong assumption about capacitive level switches.

They look at the connection size and output signal, then select a model. But with capacitance based level detection, the medium, dielectric constant, mounting, process connection and behaviour of material around the sensing tip matter just as much.

Baumer's CleverLevel range addresses this type of point level detection with the LBFS capacitive point level sensor and the LFFS CleverLevel switch. Both work with media having a dielectric constant above 1.5, but their configuration options and application possibilities are not identical.

What is a Baumer capacitive level switch?

A capacitive level switch detects whether material is present or absent at a fixed point in a tank, pipe or vessel.

It does not tell you that a tank is 42 percent full. That would require continuous level measurement. Instead, a point level switch answers a simpler but important question:

Has the product reached this point or not?

This signal can then be used for functions such as:

• High level alarm
• Low level alarm
• Tank overfill protection
• Pump dry run protection
• Empty pipe detection
• Product presence detection
• Media separation
• Automatic filling or emptying logic

Baumer uses its CleverLevel measuring principle for these applications.

How does CleverLevel actually work?

This is one of the useful details hidden behind the word "capacitive."

The measuring principle diagram on page 2 of the LFFS operating instructions shows an electrode inside the sensing tip forming a capacitor together with its surroundings. When the process medium changes, its dielectric constant changes the capacitance. The electronics combine this behaviour with a resonance circuit and evaluate the resulting frequency against programmed switching thresholds.

The LBFS datasheet describes this as CleverLevel Frequency Sweep technology.

In practical terms, the sensor is not simply waiting for electrical contact with the product. It evaluates how the electromagnetic behaviour around the sensing tip changes when product is present.

This makes the technology useful across very different media, provided the actual product and installation conditions are considered during selection.

Baumer CleverLevel LBFS

The Baumer LBFS is a compact capacitive point level sensor intended for both industrial and hygienic applications.

It makes sense when you need a small stainless steel point level device that can be mounted from the side, top or bottom of a tank or process connection and connected directly into an automation system.

The datasheet also specifies mounting from the top, bottom or side. Its wetted materials include PEEK and stainless steel, with AISI 316L as a primary option.

Technical points to note:

• Measuring principle: CleverLevel Frequency Sweep
• Media dielectric constant: above 1.5
• Repeatability: ±1 mm
• Hysteresis: ±1 mm
• Typical response time: 0.1 second
• Adjustable damping: 0 to 10 seconds
• Output configurations: PNP or NPN
• Switching logic: normally open or normally closed
• Supply: 12 to 30 V DC
• Protection: IP67 or IP69K with the appropriate cable
• Electrical options include M12 connector or cable versions

The LBFS product overview also lists marine, WHG and cULus approvals, with optional explosion protected configurations. Exact approvals depend on the selected ordering variant.

Where it is commonly used:

• Food and beverage tanks
• Dairy processing equipment
• Pharma and hygienic skids
• Water and utility tanks
• Process piping
• OEM filling equipment
• Pump protection
• High and low level alarms

For that reason, the complete ordering code matters.

Baumer CleverLevel LFFS

The Baumer LFFS is useful when the application requires more adjustment around difficult media or process behaviour.

The operating instructions specifically describe applications including tank level detection, media separation, empty pipe detection and pump dry run protection. The sensor can work with liquids such as water and beer, viscous or sticky products such as honey and yoghurt, and dry products such as sugar and flour.

The LFFS gives the engineer more control over that problem. Using Baumer's FlexProgrammer 9701 and Flex software, the output can be configured as PNP, NPN or digital, and the sensor can be adjusted for a particular medium. The manual also describes compensation settings for foam, bubbles, condensate and viscous media.

Technical points to note:

• Suitable for liquids and solids with dielectric constant above 1.5
• Outputs configurable as PNP, NPN or digital
• Supply: 12.5 to 36 V DC
• Output load: maximum 50 mA
• Adjustable output damping
• FlexProgrammer 9701 configuration support
• Teach in capability for empty and full conditions
• Hygienic installation options
• Resistant to CIP and SIP agents
• WHG certified for leakage and overfill protection

Where it is commonly used:

• Sticky food products
• Dairy tanks
• Beverage systems
• Powder and dry material detection
• Pump dry run protection
• Empty pipe detection
• High level protection
• Media separation applications

The LFFS instructions specifically warn that if sticky, foamy or powdery product remains around the tip during normal operation, that condition should also be present during teach in. Otherwise the calibration can be incorrect.

That is a practical point worth paying attention to during commissioning.

LBFS vs LFFS: Which Baumer level switch should you choose?

The decision should not simply be "LBFS is smaller" or "LFFS has more settings."

The better question is:

How predictable is your process medium?

For straightforward point level switching with a suitable process connection and PNP or NPN output, the LBFS can be a very practical choice.

If your process involves product coating, foam, condensation, powders or changing media conditions where sensitivity needs to be tuned, the LFFS configuration capability becomes more important.

Key Selection Factors for Baumer Capacitive Level Switches

1. Check the dielectric constant

Both product documents specify applications with media having a dielectric constant above 1.5.

If your medium is unusual or close to the switching limit, confirm suitability before ordering.

2. Understand what the sensor will really see

Do not evaluate only the bulk product.

Ask whether the tip will also see:

• Foam
• Condensation
• Product coating
• Bubbles
• Sticky residue
• Powder build up

These conditions may affect commissioning and switching behaviour.

3. Confirm the process connection

The LBFS range includes multiple threaded, NPT, hygienic, cooling neck and sliding configurations.

For hygienic installations, Baumer notes that 3 A and EHEDG requirements depend on using the appropriate mounting accessories.

4. Confirm PLC input compatibility

If the switch is going into a PLC, relay module or control panel, confirm whether the input expects PNP or NPN logic.

Do not assume that every level switch can simply replace another model with the same connection thread.

5. Check actual process temperature and pressure

This is especially important with LBFS because the operating conditions table changes according to the exact connection and sensor construction.

Some special LBFS arrangements use cooling necks or sliding connections for higher process temperatures. Confirm the full ordering code instead of relying only on the general product overview.

6. Check whether hazardous area approval is required

LBFS is available with selected IECEx, CCC and ATEX configurations. The LFFS documentation also covers versions for hazardous gas and dust applications. Approval requirements must be matched to the exact area classification and device variant.

7. Do not ignore installation details

The LFFS manual makes several installation points that are easy to miss. The sensor should be installed in a closed metal pipe, tank or container, and the sensor tip needs the correct relationship to the surrounding metal for the measuring principle to work as intended. Hygienic installations also require the correct adapter and orientation.

Common Applications

Baumer capacitive level switches can fit applications such as tank high level detection, low level alarms, pump protection, empty pipe detection, dry media presence detection, process vessel switching, food product tanks and hygienic production equipment.

The LFFS documentation is particularly useful here because it gives real examples rather than simply saying "liquids and solids." It specifically lists water, beer, honey, yoghurt, toothpaste, ketchup, sugar and flour.

That range gives a good idea of why CleverLevel is interesting for applications where one plant may handle both thin liquids and products that leave residue on conventional probes.

Common Mistakes to Avoid

Quick Selection Checklist

Before ordering a Baumer capacitive level switch, confirm:

1. Product or media name
2. Liquid, powder or sticky material
3. Dielectric constant if known
4. High level, low level, dry run or empty pipe application
5. PNP, NPN or other required switching output
6. Normally open or normally closed logic
7. PLC, relay or control system connection
8. Process connection
9. Tank or pipe mounting position
10. Process temperature
11. Process pressure
12. Hygienic requirement
13. CIP or SIP requirement
14. IP protection
15. Hazardous area certification
16. Need for teach in or media adjustment

Specifications to Confirm Before Purchase

Baumer offers many combinations, particularly within the LBFS ordering system. Final specification should therefore be checked against the exact selected variant.

Confirm the process connection, wetted material, temperature rating, pressure limit, supply voltage, switching output, cable or M12 connection, IP rating, hygienic approval, explosion protection, sensor length and mounting accessory before placing the order.

Why Buy Baumer Level Switches from Radical TechMart?

The difficult part of buying a level switch is usually not finding the model number. It is deciding whether that model will behave correctly once it sees the actual product inside the tank.

At Radical TechMart, the selection discussion can start from the application: media, tank, temperature, pressure, PLC input, hygiene requirement and required switching function.

This is particularly useful with products such as LBFS and LFFS because several sensor, connection and approval configurations are available.

Final Thoughts

A Baumer capacitive level switch should be selected around the process, not only around the thread size.

For a compact industrial or hygienic point level application, the LBFS gives a broad range of connection and configuration possibilities. For more demanding media behaviour where foam, coating, powder or changing process conditions need to be considered during commissioning, the LFFS offers useful teach in and FlexProgrammer adjustment capabilities.

In practical plant work, the best level switch is the one that still switches correctly after the process has been running for weeks, not just the one that works during the first water test.

FAQs

1. What is the Baumer LBFS?

The LBFS is a Baumer CleverLevel capacitive point level sensor for industrial and hygienic applications. It uses Frequency Sweep measurement and supports PNP or NPN switching configurations.

2. What is the Baumer LFFS used for?

The LFFS can be used for tank level detection, media separation, empty pipe detection and pump dry run protection. It supports liquids, sticky products and dry media with dielectric constant above 1.5.

3. Can Baumer CleverLevel detect powders?

Yes. The LFFS manual specifically gives sugar and flour as examples of dry media that can be detected. Suitability still depends on dielectric properties and installation conditions.

4. Can a Baumer capacitive level switch connect to a PLC?

Yes. LBFS is available with PNP or NPN output configurations. LFFS can be configured for PNP, NPN or digital output. The PLC input type and wiring must be confirmed before installation.

5. Is CleverLevel suitable for sticky products?

The LFFS documentation specifically mentions viscous and sticky products including honey, yoghurt, toothpaste and ketchup. It also provides media adjustment and teach in functions for difficult operating conditions.

6. Can the sensor be used in hygienic applications?

Yes, suitable LBFS and LFFS configurations support hygienic installations. For certifications such as 3 A or EHEDG, the appropriate mounting accessories and installation method must also be used.

7. Is Baumer LBFS suitable for high temperature applications?

Selected LBFS variants use cooling necks, extended hygienic connections or sliding connections for elevated process temperatures. The allowable limit depends on the exact ordering configuration, so the operating conditions table should be checked before selection.

8. What is the difference between LBFS and LFFS?

Both are CleverLevel point level devices for media with dielectric constant above 1.5. LBFS is a compact configurable sensor family with extensive connection choices, while LFFS documentation places greater emphasis on teach in, FlexProgrammer configuration and compensation for challenging media conditions.

A tank has to stop filling before it overflows. A pump should not continue running when the liquid level becomes too low. A process vessel needs a high-level alarm. A wastewater sump needs automatic pump control.

All of these sound like straightforward level switching applications.

The mistake happens when the buyer simply asks for a "float switch" without considering how the switch will be mounted, what liquid is inside the vessel, operating temperature, pressure, required switching point and installation environment.

A cable float hanging inside a water tank and a stainless steel side-mounted float fitted into a process vessel perform the same basic job, but they are meant for very different installations.

Within the Baumer float level switch range covered by the available datasheets, this difference is clearly seen between the LZ Cable Float Level Switch and the LA Side Mounted Level Switch. The LZ is designed around a suspended polypropylene float and cable arrangement, while the LA uses a side-mounted float mechanism with AISI 316 stainless steel wetted parts and a magnetic switching principle.

That distinction should be the starting point of selection.

What Is a Baumer Float Level Switch?

A float level switch detects whether liquid has reached a particular level and changes an electrical contact accordingly.

Unlike a continuous level transmitter, it does not tell the control system that the tank is 42% or 78% full. Its job is to give a switching condition such as:

In a typical control panel, this switching contact can become part of a relay, contactor, alarm or PLC digital input circuit, depending on the electrical design.

The important question is therefore not only, "Do I need a float switch?"

It is, "What type of float switch suits this vessel and process?"

Baumer LZ Cable Float Level Switch

The LZ is the simpler choice when the float can hang freely inside a tank, sump or reservoir.

As the liquid rises or falls, the float tilts. That movement operates an internal microswitch and changes the contact from normally open to normally closed or vice versa. Baumer also shows the LZ being used for filling control and pump protection, which makes its intended use very clear.

Best for:

Water tanks, sewage tanks, reservoirs, sumps and automatic pump control applications where a suspended cable float can move freely with liquid level.

Why the LZ makes sense

The strength of the LZ is simplicity.

You do not need a side process flange penetrating the vessel. The float is suspended from its cable, and the adjustable counterweight helps define how the float moves around the required switching level.

This makes it practical for larger tanks where the level differential does not need to be extremely tight.

Its polypropylene construction also suits the water and sewage applications identified in the datasheet. The enclosure is IP68, which is particularly relevant because the float operates directly in the liquid environment.

Technical points to note

Baumer notes that cable lengths above 20 metres should be discussed with the factory.

Where the LZ is commonly used

Its datasheet specifically identifies sewage and water treatment plants, storage tanks and automatic pump control utilities. The same operating principle makes it relevant wherever a freely suspended float can be used for high or low level switching.

For example, in a sump pump application, one LZ can be positioned to create the required switching point. Where multiple level points are necessary, the datasheet also states that the LZ can be used as a multipoint switch arrangement.

Selection caution

Do not select the LZ simply because the application contains water.

Check whether the float has enough free space to move without hitting a wall, ladder, pipe, agitator or other internal structure. Also confirm liquid temperature and pressure because the standard version is specified up to 60°C and 4 bar.

For compact vessels requiring a precise side switching point, the LA arrangement may make more sense.

Baumer LA Side Mounted Float Level Switch

The LA belongs to a different class of installation.

Instead of hanging from a cable, it is fitted through the side of the vessel. A free-moving float operates a magnetic mechanism. The datasheet describes two magnets, one associated with the float arm and another in the switch enclosure. Changing liquid level brings the magnetic poles into a position where repulsion produces a snap-action changeover contact.

Best for:

Process tanks and vessels where a defined side-mounted level point is required, particularly where stainless steel wetted parts, higher temperature capability or higher operating pressure are needed.

Why the LA makes sense

A side-mounted switch gives the engineer a defined physical switching location.

If the requirement is "give me a high-level alarm at this nozzle" rather than "switch somewhere across this suspended cable travel," a side-mounted design is generally much easier to engineer into the vessel.

The standard LA uses AISI 316 stainless steel wetted parts, a 92 mm PCD square flange and a 215 mm standard insertion depth. Its standard operating specification extends from -10°C to +180°C with a maximum pressure of 18 kg/cm² and a minimum liquid specific gravity of 0.75.

That immediately places it in a different application range from the LZ.

Technical points to note

Where the LA is commonly used

Baumer identifies applications including chemical processing equipment, alarms for hydro-pneumatic tanks, shipbuilding, water treatment plants, food and pharmaceutical applications.

These applications make sense because the LA is designed around a process-mounted construction rather than a freely suspended plastic float.

LA variants matter when the standard model is not enough

The LA family is not limited to one configuration.

Baumer lists:

Type A: General-purpose standard version

Type T: High-temperature version, up to 350°C, using aluminium cooling fins

Type Z: Adjustable differential version

The minimum insertion depth is 215 mm for Types A and T, while Type Z starts from 350 mm. The ordering information also provides alternatives for housing, cable glands, switch output and process connections. Standard switch output is 1 SPDT, with 2 SPDT / 1 DPDT available as another listed configuration.

This is useful in projects where the requirement is more specific than a standard high or low level switch.

Selection caution

The minimum specific gravity of 0.75 must not be ignored.

A float works only when the liquid can provide sufficient buoyancy. Before ordering the LA, Baumer specifically asks for the liquid, specific gravity, operating pressure and operating temperature along with the model information.

That is good purchasing practice even when replacing an existing switch.

Baumer LA vs LZ: Which Float Level Switch Should You Choose?

In simple words, choose the LZ when you need a practical cable float inside a tank. Choose the LA when you need an engineered switching point on the side of a process vessel.

Key Selection Factors for a Baumer Float Level Switch

1. Start With the Tank, Not the Model Number

First determine whether the vessel allows a freely hanging float.

A large water storage tank or sump may suit an LZ very well. A compact process vessel with a dedicated side nozzle naturally points toward the LA.

2. Check the Liquid

For the LA, specific gravity matters because the standard minimum is 0.75. Also consider whether the wetted material is compatible with the liquid. The standard LA uses AISI 316 SS wetted parts, while the LZ uses a polypropylene float.

3. Check Temperature Before Anything Else

This is one of the easiest ways to separate the two products.

An application near ambient water temperature is very different from a hot process vessel.

The LZ standard version is specified up to 60°C. The LA standard version reaches +180°C, while the Type T configuration is listed for temperatures up to 350°C.

4. Confirm Operating Pressure

Do not use tank dimensions as a substitute for pressure information.

The LZ standard specification lists a maximum operating pressure of 4 bar. The LA standard version lists 18 kg/cm².

5. Decide the Required Switching Differential

A pump control application may intentionally need significant difference between ON and OFF levels to avoid rapid cycling.

A process alarm may require a much more defined switching point.

This is where the physical arrangement of LZ and LA becomes important.

6. Confirm the Electrical Circuit

Both products provide switch contacts rather than a continuous analogue level signal.

Before connecting the switch to a PLC, relay or pump control circuit, confirm the required contact logic, voltage and current. The LZ is listed as SPDT rated 16 A at 250 VAC, while the standard LA microswitch is rated 5 A at 250 VAC.

Common Mistakes to Avoid

The most common mistake is ordering by the words "float switch" alone.

Also avoid selecting the LZ without checking whether it has enough movement inside the tank, ignoring the LA's specific gravity requirement, choosing a switch without checking process temperature and pressure, assuming IP68 and IP65 mean the products can be used interchangeably, and replacing an old side-mounted switch without confirming process connection and insertion depth.

For pump applications, also consider the actual start and stop logic before installation. A switch that operates correctly at the wrong elevation is still the wrong installation.

Do This, Not That

Quick Selection Checklist

Before sending an inquiry for a Baumer float level switch, confirm the liquid, tank or vessel type, side-mounted or suspended installation, high-level or low-level function, operating temperature, operating pressure, liquid specific gravity where applicable, required switching differential, electrical contact requirement, process connection for LA, cable length for LZ and whether the application is alarm duty or automatic pump control.

Providing these details usually makes model selection much faster.

Why Buy Baumer Float Level Switches from Radical TechMart?

A float level switch is inexpensive compared with the pump, vessel or process it protects, but incorrect selection can still create repeated operating problems.

At Radical TechMart, the focus is to help buyers identify whether the application needs a simple cable float such as the Baumer LZ or a process-mounted switch such as the Baumer LA, then confirm the important operating conditions before quotation.

Support can include product selection, datasheet clarification, model configuration, pricing and availability for water treatment companies, OEMs, EPC contractors, process industries, maintenance teams and industrial purchase departments.

Final Thoughts

The best Baumer float level switch is not automatically the model with the higher temperature rating or more options.

For a water tank or sump, the simpler LZ cable float may be exactly what the application needs. For a pressurised process vessel, chemical application or defined side-mounted switching point, the LA can be the more appropriate choice.

The selection becomes straightforward once you answer four questions first: What is the liquid, where will the switch be mounted, what are the temperature and pressure, and exactly what level action should occur?

That is a much better way to select a float level switch than starting with price or model number.

FAQs

1. What is a Baumer float level switch used for?

A Baumer float level switch is used for point level detection such as high-level alarm, low-level alarm, filling control, pump start, pump stop and pump protection.

2. What is the difference between Baumer LA and LZ level switches?

The LZ is a cable float that hangs inside the tank and tilts as the level changes. The LA is a side-mounted process level switch using a float arm and magnetic snap-action switching mechanism.

3. Which Baumer level switch is suitable for a water tank?

For a storage tank or reservoir where a suspended float can move freely, the LZ is specifically identified by Baumer for storage tanks, sewage and water treatment and automatic pump control.

4. Which Baumer float switch is better for high-temperature applications?

The LA offers greater temperature capability. Its standard version is specified up to +180°C, while the Type T high-temperature configuration is listed up to 350°C.

5. Can a Baumer float switch be connected to a PLC?

The products provide switch contacts that can typically be incorporated into industrial control circuits. The final PLC input wiring or interposing relay arrangement should be designed according to the PLC input specification and the switch contact rating.

6. What cable lengths are available for the Baumer LZ?

The datasheet lists 3 metres as standard, with 5, 10 and 20 metre versions. For lengths above 20 metres, Baumer advises consulting the factory.

7. What specific gravity is required for the Baumer LA?

The standard LA datasheet specifies a minimum specific gravity of 0.75.

8. What information should I provide when requesting a Baumer LA level switch?

Baumer's ordering information asks buyers to specify the model number, liquid, specific gravity, operating pressure and operating temperature. Process connection, insertion depth, housing and switch output should also be selected according to the required configuration. 

Low pressure measurement is one of those applications where choosing a pressure gauge only by dial size and connection can cause trouble.

A plant may need to monitor clean air pressure, low pressure draft, a gaseous line or a low viscosity process medium. The pressure may be only a few millibars, so the instrument has to provide useful indication in a range where a conventional high pressure gauge would not be the logical choice.

This is where a Baumer Capsule Pressure Gauge fits.

The Baumer capsule gauge range in the supplied datasheets is designed around low pressure measurement, with available ranges from 25 mbar to 600 mbar, pressure, vacuum and compound scale possibilities, several mounting styles and two useful construction choices: the AX SS Case Brass Pressure Gauge and the AF All SS Pressure Gauge.

The important part is deciding which construction is right for your process. The AX and AF may look similar from the front, but the materials, temperature capability, ingress protection and overpressure capability are not the same.

What is a Capsule Pressure Gauge?

A capsule pressure gauge is intended for measuring relatively low pressures where a more sensitive measuring element is required.

In general engineering terms, the pressure acts on a capsule sensing element. Small movement of this element is transferred through the mechanical movement to the pointer, giving a direct local reading on the dial.

For the Baumer models covered here, there is no electrical output specified in the supplied datasheets. These are mechanical indicating instruments intended for local pressure indication.

That distinction matters. If your requirement is only to see the pressure locally at a duct, vessel, utility line or process point, a capsule gauge may be suitable. If you need the pressure value inside a PLC, SCADA, BMS or remote control system, you would normally need an appropriate pressure transmitter or electronic measurement solution as well.

Why Capsule Gauges Matter in Actual Plant Conditions

When pressure is low, range selection becomes especially important.

Suppose the normal process pressure is around 150 mmWC. Installing a gauge designed for much higher pressure may technically give a reading, but the useful movement of the pointer can become too small for practical monitoring.

A properly selected capsule gauge gives the operator a scale that is actually useful for the process.

Baumer lists these gauges for applications including:

• Low pressure draft measurement
• Food and beverage plants
• Pharmaceutical applications
• Breweries
• Conventional power plants
• Nuclear power plants
• Clean air
• Gaseous media
• Low viscosity, non corrosive media that will not obstruct the pressure system

The datasheets specify ±1.6% of full scale accuracy for both AX and AF models.

For a maintenance engineer, this means the first question should not be "Which pressure gauge is cheapest?" It should be "What is the actual operating pressure, what media touches the instrument and what range gives me a useful reading?"

Baumer Capsule Pressure Gauge Range

The uploaded datasheets give two main constructions worth comparing.

Baumer AX Capsule Pressure Gauge

The Baumer AX is an SS case pressure gauge with copper alloy pressure components. It is a practical option where the process medium is compatible with copper alloy wetted parts and the application does not require an all stainless steel pressure system.

It also comes in four dial sizes, making it possible to choose a compact local gauge or a larger dial for easier reading from a distance.

Technical points to note:

• Available range: 25 mbar to 600 mbar
• Accuracy: ±1.6% of full scale
• Nominal sizes: 63, 100, 125 and 150 mm
• Case and bezel: AISI 304 stainless steel, bayonet type
• Capsule: copper alloy
• Socket: copper alloy
• Movement: copper alloy
• Joints: tin soldering
• Protection: IP55
• Ambient temperature: minus 25°C to plus 65°C
• Maximum process temperature: 100°C
• Recommended operating pressure: 75% of scale value
• Overpressure: listed as not suitable
• Zero adjustment provision
• General standard reference: EN 837-3

Where it is commonly suited:

• Low pressure air lines
• Draft measurement
• Clean gas service
• Utility monitoring
• HVAC related low pressure points
• Suitable brewery and food process utilities
• General plant low pressure monitoring

Baumer AF All Stainless Steel Capsule Pressure Gauge

The Baumer AF is the better option when stainless steel wetted parts, a higher process temperature limit or stronger ingress protection are required.

Its maximum listed process temperature is 150°C, compared with 100°C for the AX.

Technical points to note:

• Available range: 25 mbar to 600 mbar
• Accuracy: ±1.6% of full scale
• Nominal sizes: 63, 100, 125 and 150 mm
• Case and bezel: AISI 304 stainless steel
• Capsule: AISI 316 stainless steel
• Socket: AISI 316L stainless steel
• Movement: AISI 304 stainless steel
• Joints: TIG argon arc welding
• Protection: IP65, with IP55 for the 63 mm size
• Ambient temperature: minus 25°C to plus 65°C
• Maximum process temperature: 150°C
• Recommended operating pressure: 75% of scale value
• Overpressure: 130% of maximum scale value
• Zero adjustment provision
• General standard reference: EN 837-3

Where it is commonly suited:

• Pharmaceutical utility applications
• Food and beverage processing
• Breweries
• Clean air systems
• Suitable gas applications
• Process plant low pressure monitoring
• Applications requiring stainless steel wetted components

Baumer AX vs AF Capsule Pressure Gauge

The practical decision is straightforward. If the process is compatible with copper alloy components and the environmental conditions fit the AX specifications, AX may be sufficient. If stainless steel wetted parts, higher process temperature capability or better enclosure protection are important, AF becomes the stronger choice.

Pressure, Vacuum and Compound Ranges

Range selection deserves more attention than most buyers give it.

The Baumer datasheets show pressure scales such as:

• 0 to 250 mmWC
• 0 to 400 mmWC
• 0 to 600 mmWC
• 0 to 1000 mmWC
• 0 to 1600 mmWC
• 0 to 2000 mmWC
• 0 to 2500 mmWC
• 0 to 4000 mmWC
• 0 to 6000 mmWC

Vacuum and compound ranges are also listed.

Baumer notes that other national and international scales such as mbar, kPa, inWC, MWC, inHg and mmHg, along with dual or equivalent scales, can be provided according to requirement.

The selection lesson is important: do not choose the largest available range "for safety." A range that is unnecessarily high makes a low pressure process harder to read.

Mounting Options Matter More Than They Look

A replacement gauge can have the correct pressure range and still be wrong for the installation if the connection and mounting arrangement do not match.

The Baumer capsule range includes several configurations, depending on nominal size:

• Wall, surface or projection mounting with bottom entry
• Direct bottom entry
• Direct lower back entry
• Direct center back entry
• Lower back entry with front flange
• Lower back entry with mounting bracket
• Center back entry with mounting bracket

The dimensional drawings on pages 2 and 3 of the AX and AF datasheets show that the body depth, flange arrangement and mounting dimensions change with nominal size and mounting type. That is particularly important when replacing a gauge in an existing panel or machine.

Before ordering a replacement, check the old gauge from the side and rear, not just from the front.

Process Connections

The ordering tables provide connection options including:

• 1/4 inch BSP male
• 1/4 inch NPT male
• 3/8 inch BSP male
• 3/8 inch NPT male
• 1/2 inch BSP male
• 1/2 inch NPT male
• M20 x 1.5 male

The datasheets also note that other connection types can be provided on request, and that some connections for the 63 mm size are achieved through adaptors.

This is one of the easiest purchasing mistakes to avoid. Confirm the thread before placing the order.

Key Selection Factors for a Baumer Capsule Pressure Gauge

1. Actual working pressure

Start with the normal operating pressure, not only the maximum possible pressure. Both datasheets specify operating pressure at 75% of scale value.

2. Media compatibility

For AX, check compatibility with the copper alloy capsule and socket.

For AF, check compatibility with the AISI 316 capsule and AISI 316L socket.

3. Overpressure possibility

This is a major difference between the two models. AX is listed as not suitable for overpressure, while AF specifies 130% of maximum scale value.

4. Process temperature

AX has a maximum process temperature of 100°C.

AF extends this to 150°C.

5. Ambient condition and enclosure

Both models list an ambient range from minus 25°C to plus 65°C. For protection, AX is IP55, while AF is IP65 for the larger sizes and IP55 for 63 mm.

6. Dial size

Choose 63 mm where space is tight. Consider 100, 125 or 150 mm where the operator needs to read the gauge from farther away.

7. Mounting and connection

Confirm bottom entry, back entry, panel arrangement, flange or bracket requirement before ordering.

8. Required scale

Confirm whether your plant standard uses mbar, mmWC, kPa, inWC or another unit. Dual scales can also be requested according to the datasheet.

Common Mistakes to Avoid

Do This, Not That

Quick Selection Checklist

Before asking for a Baumer Capsule Pressure Gauge quotation, confirm:

1. Normal operating pressure
2. Required pressure, vacuum or compound range
3. Preferred engineering unit
4. Process media
5. Maximum process temperature
6. Possibility of pressure spikes or overpressure
7. Required dial size
8. Bottom or back connection
9. Mounting flange or bracket requirement
10. BSP, NPT or metric process connection
11. Required IP protection
12. Whether copper alloy or stainless steel wetted parts are acceptable
13. Calibration certificate requirement
14. Any custom dial or tag requirement

Optional Features Worth Confirming

The Baumer ordering tables also list options such as calibration certificates, traceable calibration certificates, plexiglass, safety glass, toughened glass, custom dial marking and stainless steel tag plates.

For the AF version, the datasheet also lists options such as material test certificates and an AISI 316 case and bezel for nominal sizes of 100 mm and above.

These options are worth discussing at quotation stage rather than after the gauge has already arrived.

Why Buy Baumer Capsule Pressure Gauges from Radical TechMart?

A low pressure gauge inquiry often begins with something simple such as "Need 100 mm capsule gauge, 0 to 600 mmWC."

But that is not always enough information to select the correct instrument.

At Radical TechMart, the focus is to help buyers check the application before finalizing the gauge, including pressure range, media, wetted material, dial size, mounting type, process connection and installation condition.

This is particularly useful for OEMs, plant maintenance teams, instrumentation engineers, EPC contractors and purchase departments that need a correct replacement or project specification rather than simply another gauge with a similar dial.

Final Thoughts

A Baumer Capsule Pressure Gauge makes sense when the application involves low pressure measurement and clear local indication.

The real selection decision is not AX versus AF based on price alone. It is about what touches the process, how hot the process can become, whether overpressure can occur, what protection level is required and how the gauge has to fit into the existing installation.

For compatible general service, the AX offers a stainless case with copper alloy pressure components. For applications needing stainless steel wetted parts, higher process temperature capability and stronger protection in larger sizes, the AF provides the more appropriate construction.

In low pressure measurement, choosing the correct range and construction is what makes the gauge useful after installation, not simply choosing a familiar model number.

FAQs

1. What is a Baumer capsule pressure gauge used for?

It is used for low pressure measurement in applications such as draft measurement, clean air, gaseous media and suitable low viscosity, non corrosive process media.

2. What pressure ranges are available for Baumer capsule gauges?

The datasheets state an available range from 25 mbar to 600 mbar. Example mmWC pressure, vacuum and compound ranges are also provided.

3. What is the difference between Baumer AX and AF capsule gauges?

AX uses a stainless steel case with copper alloy capsule and socket. AF uses an AISI 316 stainless steel capsule and AISI 316L socket, provides a higher listed process temperature and has IP65 protection for 100 mm and larger versions.

4. Is the Baumer AX suitable for pressure spikes?

The AX datasheet lists its overpressure limit as "Not Suitable." If pressure spikes are expected, this must be considered during selection.

5. What is the accuracy of Baumer capsule pressure gauges?

Both AX and AF datasheets specify accuracy of ±1.6% of full scale.

6. Which dial sizes are available?

Both models are available in standard nominal sizes of 63, 100, 125 and 150 mm.

7. Can I order the gauge in mmWC, mbar or kPa?

Yes. The datasheets reference scales including mbar, kPa, inWC, MWC, inHg and mmHg, along with dual or equivalent scales on request.

8. Can Baumer AX or AF connect directly to a PLC?

The supplied AX and AF datasheets describe mechanical indicating gauges and do not specify an electrical output. For PLC or SCADA pressure monitoring, an appropriate pressure transmitter or electronic pressure instrument should be selected separately.