Project Description

Industrial Online pH Sensor for Water Treatment and Aquaculture

Adopt RS485 communication interface and standard Modbus protocol. Corrosion resistant shell,built – in PT1000 temperature sensor and compensation algorithm,applicable to all kinds of harsh working environment. Included with data analysis software,with calibration, recording, analysis, diagnosis and other functions.

Online pH Sensor Features

  • Industrial grade composite pH electrode, suitable for harsh working environment

  • Reference electrode double salt bridge design, with long service life

  • PT1000 temperature compensation,accuracy up to±0.1℃

  • Corrosion resistant shell,waterproof grade IP68 can be long-term underwater work

  • RS485 communication interface,standard Modbus protocol,easy to be integrated

  • Data analysis software,with calibration, recording, analysis, diagnosis functions.

Widely used in surface water, municipal wastewater, industrial wastewater, sewage treatment, waterworks, industrial processes, aquaculture and other industries.

Temperature:(-10-60)℃ ;Pressure:(0-6)bar

The pH is defined as the negative logarithm of the hydrogen ion activity in the medium, used to measure the degree of acid and alkali. Hydrogen ions selectively permeate through the outer membrane,produce electrochemical potential,that is, the potential of the electrochemical boundary layer. The resulting electrochemical potential depends on the pH of the medium. The electrode is built with Ag/AgCl as reference electrode,its potential is stable, unaffected by the pH of the medium. The transmitter converts the measured voltage to the corresponding pH value based on the Nernst equation (Nernst).

Technical Parameters

Range2-12 pH
Accuracy±0.1 pH
Housing IP RatingIP68(completed electrode assembly)
Depth Rating10m
Storage Temperature0~60℃
Operation Temperature0 ~ 50℃
InterfaceRS-485, MODBUS protocols
Power RequirementsDC 5~12V, current<50mA
Sensor OD26 mm
Sensor Length167.5 mm
Cable Length10m standard, 5m, 15m or 30m optional
Body MaterialsPOM, 316L
CalibrationThree points

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