Smart pH sensor
RL042B
Smart pH Sensor
RL042B
SMART pH SENSOR
SMART pH SENSOR
RL042B Smart pH Sensor
RL042B is a digital pH sensor for routine online water quality monitoring, featuring an RS-485 interface and standard Modbus protocol. Its industrial online pH electrode is replaceable, while the built-in temperature sensor provides automatic compensation for stable long-term operation.
RL042B Smart pH Sensor
Product Advantages
Low-power, interference-resistant circuit design
Double salt bridge and high-impedance design for stable data
RS-485 interface and standard Modbus protocol for easy integration
Replaceable and customizable electrode for complex water conditions
RL042B Smart pH Sensor
Technical Specifications
Range0 ~ 14 pH
Accuracy±0.1 pH
Measurement MethodIon-selective Electrode Method
Resolution0.01 pH
CalibrationTwo-point Calibration
Response Time10 s T90
Temperature CompensationAutomatic Temperature Compensation (NTC)
Power Supply12 or 24 VDC ±10%, 10 mA
DimensionsDiameter 30 mm; length 189 mm
Ingress ProtectionIP68; 20 m water depth; other options available
Service LifeSensor: 1 year or longer
Sensor Housing MaterialPOM; customizable
Output SignalRS-485, Modbus/RTU
Operating ConditionsStandard: 0-65°C, <0.2 MPa; other conditions customizable
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