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PRODUCTS & SERVICES is a provider of process control instruments and field devices for Oil & Gas, Industrial Machinery, Pipelines, Custody Transfer, Tank Gauging, Waste Processing, Water Treatment Plants, Burner Management Systems and Incinerators, Conveyor Control, Food & Beverage, Motor, Pump & Compressor Control, Wireless Telemetry, Data Logging, Real-Time Process Data to Web.

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EH Memosens CPS31D digital pH glass electrode for application in drinking water and swimming pools. Corrosion and moisture resistant. 60 psi max pressure. IP68.

Part# with Options:        CPS31D-7AC21
Price with Options:        Please Email us your request for quote   


Application Range
(1) Application Range for EH CPS31D
(2) Approval for EH CPS31D

  Availability 7 Days  ]

  • Drinking water
  • Swimming pool water
  • pH compensation for measuring free chlorine
Your benefits
  • One or three ceramic diaphragms
  • Optional salt ring for extended operating life
  • Very low level of ion depletion in electrolyte
  • Gel filling, no electrolyte refill required
  • Can be used up to 4 bar (60 psi) absolute pressure
  • Can be used up to 80 ̊C (176 F)
  • Shaft length 120 mm
  • Memosens plug-in head
  • ESA or GSA plug-in head
Further benefits offered by Memosens technology
  • Maximum process safety thanks to non-contact, inductive signal transmission
  • Digital data transmission ensures data security
  • Very easy to use as sensor-specific data are stored in the sensor
  • Recording of sensor load data in the sensor enables predictive maintenance
Measuring principle pH measurement

The pH value is a measure of the acid or base character of a medium. Depending on the pH value of the medium, the electrode's membrane glass provides an electrochemical potential. This is the result of H + ions selectively penetrating the outer layer of the membrane. As a result, an electrochemical boundary layer forms here with an electric potential. An integrated Ag/AgCl reference system forms the required reference electrode.

The transmitter converts the measured voltage into the corresponding pH value according to the Nernst equation.

Measuring Principle Glass electrode
Application Drinking water and swimming pool water, pH compensation to measure free chlorine
Characteristic Standard applications in water, long lifetime
Measurement range pH 1 - 12
Measuring principle Gel filled reference with one or three diaphragms, option saltring
Design Shaft length 120 mm, with temperature sensor
Material Glass / Ceramics
Dimension Shaft length 120 mm
Process temperature 0 - 80 C (32 - 176 F)
Process pressure 1 - 4 bar abs (15 - 60 psi)
temperature sensor NTC 30k
Ex certification None
Connection Memosens
Ingres protection IP68

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