New
PH-D120 online PH digital sensor/transmitter
(RS-485/ModbusRTU)
What you measure at 0 to 14 pH is what you get. With digital sensor technology, measurement is no longer erratic.
Powerful Modebus RTU/RS-485 transmission method, rich data carrying, and accurate measurement of every data!
● signal output: RS-485 ( Modbus/RTU protocol ).
● Conveniently connected to third-party devices such as PLC, DCS, industrial control computers, general controllers, paperless recording instruments or touch screens.
● Dual high-impedance differential amplifiers, strong anti-interference and fast response.
● ORP probe, the internal reference liquid seeps out from the microporous salt bridge extremely slowly under a pressure of at least 100KPa (1Bar), and its positive seepage lasts for more than 20 months. Such a reference system is very stable and the electrode life is doubled compared to ordinary industrial electrodes.
● Easy to install: 3/4NPT pipe thread, easy for submersible installation or installation in pipes and tanks.
● IP68 Protection rating.
Range | 0~14pH |
Resolution | 0.01pH |
Accuracy | ±0.1pH |
Operating Temperature | 0~65℃(0~100℃ optional ) |
Working Pressure | <0.2MPa |
Power supply | 12~24VDC±10% |
Signal Output | Rs485(Modbus/RTU) |
Wetted material | PPR |
Mounting Type | 3/4" NPT thread |
Maintenance | It is recommended to clean the electrode once a month and calibrate it every three months. Replace electrodes once a year. |
Display type | None |
Measurement compensation | temperature compensation NTC2.252K |
Dimensions | 50×45×230mm |
Weight | 230g |
Calibration method | Two-point calibration |
Protection Rating | IP68 |
Measuring principle | Electrochemistry, 3 mol/L KCL |
Power Consumption | <0.5W |
Brand | DOWESTON |


Tell us about your measurement task and we will help with product selection and technical questions.info@doweston.com