RS485 pH sensor
This RS485 pH sensor adopts an industrial-grade high-precision pH electrode, equipped with a built-in PT1000 temperature probe to realize fully automatic temperature compensation. It covers a full measuring range of 0-14pH, with a resolution of up to 0.01pH and stable measurement accuracy within ±0.05pH. It features a fast response speed, outputting stable data in less than 10 seconds in a flowing liquid environment, meeting the stringent requirements of real-time online monitoring. The device adopts the standard Modbus RTU communication protocol, enabling data transmission via the RS485 interface with a maximum transmission distance of up to 500 meters. It boasts strong anti-interference performance, can be directly connected to PLC, DCS systems, industrial control screens and IoT monitoring platforms, supports multi-node networking, features simple and efficient wiring, and greatly reduces system integration costs.
The RS485 pH sensor fuselage is made of IP68 protection grade material, and the shell is corrosion-resistant and immersion-resistant, suitable for various complex water quality environments such as sewage, chemical wastewater and aquaculture water. It supports multiple installation methods including threaded immersion, pipeline and flow-through types, with convenient installation and debugging and easy daily maintenance.


Product Features
1. RS-485 transmission interface, MODBUS-RTU communication protocol, supporting bidirectional communication.
2. Isolated power supply and output design to ensure electrical safety.
3. Built-in protection circuit for enhanced anti-interference capability, suitable for complex environments.
4. Simple and user-friendly communication protocol, capable of outputting more electrode diagnostic information for greater intelligence.
5. Low-power design to accommodate a wider range of applications; internal memory retains calibration and settings during power outages.
6. PPS housing with strong corrosion resistance; 3/4-inch front and rear threads for easy installation.



Technical Parameters
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PH |
Range |
0.00pH~14.00pH |
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Resolution |
0.01 pH |
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Accuracy |
±0.1 pH |
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Temperature |
Range |
-10.0~110.0℃ |
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Resolution |
0.1℃ |
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Accuracy |
±0.5℃ |
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Sensor Type |
Thermistor TH10K |
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Compensation |
Automatic/Manual |
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Data Transmission |
RS-485 |
MODBUS-RTU Communication Protocol |
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Other Parameters |
Power Supply |
9~27VDC |
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Isolation |
2500Vrms |
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Power Consumption |
Approx. 0.5W |
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Material |
PPS Housing |
Product Application








FAQ
Q: Is it possible to visit your factory?
A: Our company is located in Shanghai, China, It is very convenient to visit us.And all clients from all over the world are highly welcome to us.
Q: About price?
A: The price is negotiable.It can be changed according to your quantity. When you are making an inquiry,please let us know the quantity you want.
Q: What can you buy from us?
A: Controller, digital electrode, test pen, sensor, water quality sensor.


