Water PH Temperature Transmitter Detection Sensor

♦Adopt double high-impedance three-electrode system, with online one-key calibration, real-time temperature compensation, electrode loose alarm, electrode good or bad alarm during calibration, and power-off protection .

♦Overcurrent protection, overvoltage protection, high measurement accuracy, fast response, long life and so on.

♦The user-friendly online one-key calibration function is convenient for users to calibrate and correct the electrode regularly. Combined with temperature compensation and power-off protection functions, it can effectively complete the conversion, processing, and other processes of measurement data.

♦Small in size, light in weight, easy to install and maintain, and the standard industrial signal output (0-5V, 0-10V, 4-20MA, ModbusRTU485) can meet the limit of on-site connection to various real-time monitoring equipment.

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Water PH Temperature Transmitter Detection Sensor

The pH value and temperature transmitter adopts a dual high resistance three electrode system, which has the characteristics of on-line one key calibration, real-time temperature compensation, electrode breaking alarm, correcting the good and bad alarm of the punctual electrode, power off protection (which can make the calibration results and the preset data not lost because of shutdown or blackout), overcurrent protection, overvoltage protection, high measurement precision, quick response and long service life.

This product is suitable for: electroplating, yeast, food processing, sewage treatment, metallurgy, environmental protection and other occasions.

ltems Parameters
Temperature measurement range -20°℃~+80℃
Temperature measurement accuracy ±0.5°℃
Measurement PH range 0.0~14.0PH
Measuring PH Accuracy ±0.01PH
Power supply DC12V-24V
Output 0-5V/0-10V/4-20mA/RS485
load resistance Voltage output:R load ≥10K Ω
Current output:R load≤(Uvcc-3)/0.02Ω
Consumption <1W
Storage condition 10-50℃(-20-+80C peak)20-60%RH
Working environment -20°℃~+80℃
dimension 65X46X28.5mm³

Technical Specification

Item No. SCH-PH
Measuring range PH 0.0~14.0PH
Temperature -20℃~+80℃
Measurement accuracy PH ±0.1PH
Temperature ±0.5℃
Working voltage DC:12V ~ 24V (ripple< 50mV)
Signal output DC0-5V/ DC0-10V /4-20mA /Modbus RTU-RS485
Load resistance Vout: RLoad≥10KΩ;
Iout: RLoad≤(Uvcc-3)/0.02Ω
Power waste <1W
Storage environment Temperature 10℃-50℃ (-20℃~+80℃ peak)
Humidity 20-60%RH
work environment Temperature -20℃~+80℃
Humidity 5-95%RH (non-condensing)
Shape size 65mm*46mm*28.5mm

he linear relation between analog signals and the corresponding physical value:

0 to 5 v output: PH=PH output voltage*2.8, temperature=temperature output voltage*20.0-20.0;


0 to 10 v output: PH=PH output voltage*1.4, temperature=temperature output voltage*10.0-20.0;
4-20 ma output: PH= (PH output current-4.0)*0.875, temperature=(temperature output current-4.0)*6.25-20.0;

PH measuring
PH 0.00 1.0 2.00 3.00 4.00 5.00 6.00 7.00 8.00 900  10.00 11.00 12.00 13.00 14.00
0-5V output 0.00 0.36 0.71 1.07 1.43 1.79 2.14 2.50 2.86 3.21 3.57 3.93 4.29 4.64 5.00
0-10V output 0.00 0.71 1.43 2.14 2.86 3.57 4.29 5.00 5.71 6.43 7.14 7.86 8.57 9.29 10.00
4-20mA output 4.00 5.14 6.29 7.43 8.57 9.71 10.86 12.00 13.14 14.29 15.43 16.57 17.71 18.86 20.00
measunng  range
Temperature  -20  -10 0  10  20 30 40 50 60 70 S0
0-5V output  0.00  0.50 1.00  1.50  2.00 2.50 3.00 3.50 4.00 4.50 5.00
0-10V output  0.00  1.00 2.00  3.00  4.00 5.00 6.00 7.00 8.00 9.0 10.0
4-20mA output  4.00  5.60 7.20  8.80  10.40 12.00 13.60 15.20 16.80 18.40 20.00


Can you produce according to the samples or drawings?

Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.


What is the lead time?

For standard models, lead time is about 3~5 days after order confirmed and payment received.

For OEM orders, the delivery is about 2~3 weeks after data confirmed and payment received.


How to solve the quality problems after sales?

Take photos or videos of the problems and send to us.

 We will make a satisfied solution for you within 24 hours after we confirm the problems


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