RDCL Waterproof IP68 Pressure Transmitter RDCLPSF
The RDCL Waterproof IP68 Pressure Transmitter is a high-precision industrial pressure sensor designed for reliable pressure measurement in wet, humid and demanding environments.
Featuring a 316L stainless steel isolation diaphragm, diffused silicon sensing technology and a standard 4 to 20 mA output, it provides accurate pressure monitoring for water treatment, food processing, hydraulic systems, marine applications and industrial automation.
With selectable pressure ranges up to 100 MPa, multiple electrical output options and DC power supply configurations, this waterproof pressure transmitter is suitable for integration with PLC, SCADA and industrial monitoring systems.
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A. Product Overview
The RDCL Waterproof IP68 Pressure Transmitter is designed for continuous pressure measurement in water, liquid and compatible industrial systems. It uses a diffused silicon sensor, a 316L stainless steel isolation diaphragm and signal-conditioning electronics to convert pressure into a reliable electrical output.
Its IP68 enclosure supports wet and submerged installations within specified immersion limits. The standard output is two-wire 4 to 20 mA, with optional voltage and RS485 versions. Common applications include water treatment, pumping, irrigation, marine systems, food processing and industrial automation.
Key Features
IP68 waterproof construction for demanding environments.
Diffused silicon sensing with 316L stainless steel diaphragm.
Selectable pressure ranges from -100 kPa to 100 MPa.
Standard two-wire 4 to 20 mA output.
Optional 0 to 5 V, 0 to 10 V, 1 to 5 V, 0.5 to 4.5 V and RS485 outputs.
Accuracy options of 0.25% and 0.5%.
DC supply options for common 12 V and 24 V systems.
Stable performance under vibration and electrical interference.
Compact design with threaded and sanitary-style process connections.
Compatible with suitable PLC, SCADA and automation interfaces.
Technical Specifications
Parameter | Specification |
|---|---|
Brand | RDCL |
Product Name | Waterproof IP68 Pressure Transmitter |
Sensor Technology | Diffused Silicon Pressure Sensor |
Measuring Range | -100 kPa to 100 MPa, selectable |
Accuracy | 0.25% or 0.5% |
Standard Output | Two-wire 4 to 20 mA |
Optional Outputs | 1 to 5 V, 0 to 5 V, 0 to 10 V, 0.5 to 4.5 V, RS485 |
Supply Voltage | 9 to 30 V DC, 12 to 30 V DC or 5 V DC, by version |
Common Supply Options | 12 V DC and 24 V DC |
Diaphragm Material | 316L Stainless Steel |
Measuring Medium | Compatible with 316L stainless steel |
Protection Rating | IP68 |
Long-Term Stability | ≤0.1% FS per year |
Overload Capacity | 150% of rated pressure |
Ambient Temperature | -30°C to 85°C |
Standard Medium Temperature | -40°C to 85°C |
High-Temperature Version | -40°C to 200°C |
Electrical Connection | Direct cable outlet |
Process Connections | M20 × 1.5, G1/4, G3/4, 1/4 NPT, 1/2 NPT, DN50.5 |
Applications | Water treatment, marine, irrigation, food processing, automation |
Note: Range, accuracy, power supply, output and connection vary by model. Verify immersion limits, material compatibility and any required food-contact certification before ordering.
B. Working Principle
The transmitter converts applied liquid or gas pressure into a proportional electrical signal for monitoring and control.
Step 1: Pressure Detection
Process pressure acts on the 316L stainless steel isolation diaphragm and is transferred to the diffused silicon sensing element.
Step 2: Sensor Response
Pressure-sensitive resistive structures inside the silicon element change their electrical properties according to applied stress.
Step 3: Electrical Signal Generation
Internal circuits amplify, compensate and filter the sensor signal to provide stable measurements.
Step 4: Signal Conversion
The standard two-wire version converts measured pressure into a linear 4 to 20 mA signal. For a 0 to 10 bar configuration:
Measured Pressure | Output Signal |
|---|---|
0 bar | 4 mA |
2.5 bar | 8 mA |
5 bar | 12 mA |
7.5 bar | 16 mA |
10 bar | 20 mA |
An external controller can calculate pressure from this signal.
Step 5: Integration with Control Systems
The output connects to compatible PLCs, SCADA systems, indicators, data loggers, process controllers and remote monitoring equipment for display, recording, alarms or programmed control.
Step 6: Continuous Pressure Monitoring
The transmitter continuously updates its output as pressure changes. IP68 protection supports wet or submerged use only within the approved installation and immersion conditions.
C. Why Is the RDCL Waterproof IP68 Pressure Transmitter Used?
Industrial systems exposed to moisture and changing pressures require dependable measurement. This transmitter provides pressure data to monitoring and automation equipment.
1. Wastewater Treatment Plants
Measures pressure in sewage tanks, sedimentation systems, pump inlets and outlets, and wastewater pipelines. Confirm chemical compatibility with wetted materials.
2. Water Supply and Pumping Systems
Monitors water pipelines, pump discharge, treatment equipment, storage tanks and circulation systems. Connected controllers can use readings for pump control and alarms.
3. Marine and Offshore Applications
Applicable to suitable marine pumps, desalination and offshore pressure systems. For seawater or underwater use, confirm corrosion resistance, cable sealing and immersion depth.
4. Food Processing Applications
Supports pressure monitoring in beverage lines, liquid transfer, storage tanks and washdown environments. A 316L diaphragm and DN50.5 connection are available, but sanitary suitability and certification must be verified.
5. Agricultural Irrigation Systems
Monitors pressure in irrigation pumps, underground pipelines, filtration units and automated agricultural water networks.
6. Hydraulic Pressure Monitoring
Measures pressure in hydraulic power packs, pipelines, machinery and control circuits when the selected range and wetted materials are compatible.
7. Industrial Automation and PLC Systems
Transmits pressure readings to compatible PLC analog inputs or digital interfaces for process displays, data logging, alarms and equipment control.
D. Suitable Buyers
The RDCL Waterproof IP68 Pressure Transmitter is suitable for OEMs, system integrators, plant operators and maintenance teams requiring industrial pressure monitoring.
Buyer Category | Typical Requirement |
|---|---|
Water Treatment Plant Operators | Water and wastewater pressure monitoring |
Sewage Treatment Contractors | Tank and pipeline pressure monitoring |
Pump Manufacturers | Pump pressure measurement and automation |
Industrial Automation Companies | PLC and SCADA integration |
Marine Engineering Companies | Marine process pressure measurement |
Irrigation System Integrators | Agricultural water pressure monitoring |
Food Processing Equipment Manufacturers | Compatible hygienic process monitoring |
Beverage Equipment Manufacturers | Liquid transfer pressure monitoring |
Hydraulic Equipment Manufacturers | Hydraulic pressure measurement |
Municipal Water Supply Departments | Distribution network monitoring |
OEM Machine Manufacturers | Industrial machine integration |
Industrial Maintenance Teams | Pressure transmitter replacement |
Chemical Processing Companies | Compatible liquid pressure monitoring |
Engineering Procurement Companies | Industrial pressure instrumentation |
Control Panel Manufacturers | Pressure monitoring panel integration |
E. Frequently Asked Questions (FAQ)
Q1. What is the RDCL Waterproof IP68 Pressure Transmitter?
An industrial instrument that measures pressure and converts it into an electrical output. It uses diffused silicon sensing, a 316L stainless steel diaphragm and IP68 protection.
Q2. What is its pressure measurement range?
Selectable ranges from -100 kPa to 100 MPa, depending on the model.
Q3. Does it support 4 to 20 mA output?
Yes. The standard two-wire version provides 4 to 20 mA for compatible PLCs, indicators and controllers.
Q4. What is the IP rating?
IP68, indicating dust protection and immersion resistance under specified conditions. Confirm allowable depth and duration.
Q5. Can it be used underwater?
Yes, within approved immersion limits and with suitable sealing, cable connections and media compatibility.
Q6. What power supply is required?
Depending on the variant, 9 to 30 V DC, 12 to 30 V DC or 5 V DC. Select the correct version for a 12 V or 24 V system.
Q7. What is its accuracy?
Available accuracy classes are 0.25% and 0.5%, depending on configuration.
Q8. Is it suitable for water treatment plants?
Yes, for compatible water and wastewater pipelines, pumping equipment and treatment systems.
Q9. Can it measure liquid level?
It measures pressure directly. A suitable controller can derive hydrostatic liquid level using pressure, liquid density and installation conditions.
Q10. What diaphragm material is used?
316L stainless steel. Verify compatibility with the specific process fluid.
Q11. Does it support RS485 communication?
Yes, on selected versions. Confirm protocol, registers and system compatibility.
Q12. Can it connect to a PLC?
Yes, using a compatible 4 to 20 mA analog input or a supported digital communication interface.
