RTM Online pH and ORP Analyzer Controller with RS485 Modbus
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A. Product Overview
RTM-ANL-PHORP-CONT-2496 is an online pH and ORP Analyzer Controller used for continuous measurement and control of pH or oxidation reduction potential in liquid processes. It is designed for panel mounting and is suitable for industrial control panels, water treatment panels, chemical dosing panels and process automation systems.
This model is an advanced version in the RTM pH and ORP controller range. It supports OLED LCD display for clear reading, high resolution measurement, relay outputs for control and alarm operation, 4 to 20 mA retransmission output for signal transfer and RS485 Modbus RTU communication for digital integration.
The controller can be configured for pH measurement or ORP measurement depending on the connected sensor and application requirement. It is suitable for pH monitoring from 0 to 14 pH and ORP monitoring from minus 2000 mV to 2000 mV.
RTM-ANL-PHORP-CONT-2496 is useful where real-time liquid quality monitoring, automatic dosing control and communication with PLC or SCADA systems are required.
B. Working Principle
RTM-ANL-PHORP-CONT-2496 works by receiving an input signal from a pH sensor or ORP sensor installed in the process liquid, tank, pipeline or flow cell.
For pH measurement, the sensor detects hydrogen ion activity in the liquid and generates a millivolt signal. The controller converts this signal into a pH value. A lower pH value indicates acidic liquid, while a higher pH value indicates alkaline liquid.
For ORP measurement, the sensor measures oxidation reduction potential in millivolts. ORP shows whether the liquid has oxidizing or reducing characteristics, which is important in disinfection, chlorination, chemical dosing and oxidation control.
The controller supports automatic or manual temperature compensation for pH measurement. This helps improve measurement reliability because pH sensor output can change with liquid temperature.
After processing the sensor signal, the controller displays the value on the OLED LCD display. Based on programmed set points, the relay outputs can operate acid dosing pumps, alkali dosing pumps, oxidant dosing pumps, alarms, control valves or interlock circuits.
The 4 to 20 mA retransmission output sends the measured pH or ORP value to PLC, SCADA, recorder, remote indicator or data logger. RS485 Modbus RTU communication allows digital data transfer for plant automation and remote monitoring.
C. Why It Is Used
RTM-ANL-PHORP-CONT-2496 is used to continuously monitor and control pH or ORP in water and process liquid systems. It helps maintain correct chemical balance, treatment quality, dosing accuracy and process safety.
In ETP and STP plants, pH control is important for neutralization, biological treatment and discharge quality. In chemical dosing systems, the controller helps automate acid and alkali dosing. In disinfection systems, ORP monitoring helps check oxidation strength and chemical effectiveness.
This controller is especially useful where automation integration is required. With 4 to 20 mA output and RS485 Modbus RTU communication, the measured value can be connected to PLC, SCADA, data logging systems and remote monitoring panels.
Main reasons for using RTM-ANL-PHORP-CONT-2496 include:
- Continuous online pH and ORP monitoring
- Advanced OLED LCD display for clear value indication
- High resolution measurement for process monitoring
- Relay output for dosing, alarm and interlock control
- 4 to 20 mA retransmission output for PLC and recorder connection
- RS485 Modbus RTU communication for automation systems
- Temperature compensation for stable pH measurement
- Suitable for ETP, STP, water treatment and chemical process applications
- Reduced dependency on manual testing
- Better control of acid, alkali, oxidant and chemical dosing
D. Suitable Buyers
RTM-ANL-PHORP-CONT-2496 is suitable for buyers who need online pH or ORP measurement with relay control, analog output and digital communication.
Suitable buyers include:
- ETP plant manufacturers
- STP plant manufacturers
- Water treatment plant suppliers
- RO plant manufacturers
- Chemical dosing system manufacturers
- Industrial wastewater treatment plants
- Chemical process industries
- Pharma utility departments
- Food and beverage processing plants
- Textile and dyeing industries
- Cooling water treatment companies
- Panel builders
- Automation system integrators
- PLC and SCADA solution providers
- Environmental monitoring companies
- Maintenance and purchase departments looking for online pH and ORP controllers
FAQ
1. What is RTM-ANL-PHORP-CONT-2496?
RTM-ANL-PHORP-CONT-2496 is an online pH and ORP Analyzer Controller used for continuous pH or ORP measurement, dosing control, alarm operation and automation integration.
2. Can RTM-ANL-PHORP-CONT-2496 measure both pH and ORP?
Yes, the controller range supports pH or ORP operation depending on the selected configuration and connected sensor.
3. What is the pH measuring range?
The pH measuring range is 0 to 14 pH.
4. What is the ORP measuring range?
The ORP measuring range is minus 2000 mV to 2000 mV.
5. What type of display is used in RTM-ANL-PHORP-CONT-2496?
This model uses an OLED LCD display for clear process value indication.
6. What is the resolution of this controller?
The listed resolution is 0.001 pH for pH measurement and 1 mV for ORP measurement.
7. What is the accuracy of RTM-ANL-PHORP-CONT-2496?
The listed accuracy is plus or minus 0.1 pH and plus or minus 2 mV.
8. Does this controller support temperature compensation?
Yes, it supports temperature compensation for pH measurement. The catalog mentions automatic or manual temperature compensation.
9. Does RTM-ANL-PHORP-CONT-2496 have relay output?
Yes, it has two relay outputs for dosing control, alarm operation, pump control and process interlocking.
10. What is the relay rating?
The relay output rating listed in the catalog is 3A.
11. Does this controller have analog output?
Yes, it provides 4 to 20 mA retransmission output for sending the measured value to PLC, SCADA, recorder, remote display or data logger.
12. Does RTM-ANL-PHORP-CONT-2496 support RS485 communication?
Yes, it supports RS485 Modbus RTU communication.
13. Can this controller be connected to PLC or SCADA?
Yes, it can be connected to PLC or SCADA using 4 to 20 mA retransmission output or RS485 Modbus RTU communication.
14. What is the power supply requirement?
The catalog mentions 90 to 260 VAC power supply and 24 VDC optional power.
15. What is the size of this controller?
The controller size is 96 x 96 x 85 mm.
16. Where is RTM-ANL-PHORP-CONT-2496 commonly used?
It is commonly used in ETP, STP, water treatment plants, chemical dosing systems, cooling water treatment, wastewater treatment, process water systems, pharma utilities, food and beverage plants and industrial automation panels.
17. Can it be used for acid and alkali dosing?
Yes, it can be used for acid and alkali dosing control by using set points and relay outputs to operate dosing pumps.
18. Can it be used for ORP-based disinfection monitoring?
Yes, when connected with an ORP sensor, it can be used for oxidation reduction potential monitoring in disinfection, chlorination, oxidation and chemical treatment systems.
19. What type of sensor is used with this controller?
It is used with a suitable pH sensor or ORP sensor depending on the application. Sensor selection depends on liquid type, temperature, pressure, mounting connection, cable length and process compatibility.
20. Who should buy RTM-ANL-PHORP-CONT-2496?
This product is suitable for ETP and STP manufacturers, water treatment companies, chemical dosing system makers, panel builders, system integrators, pharma plants, food and beverage plants, textile units, chemical plants and industrial maintenance teams.