The Endress+Hauser Group

Media center


Your career with Endress+Hauser

Product tools

Contact Information

Digital pH sensor
Memosens CPS31D

Memosens glass electrode for application in drinking water and swimming pools

  • Memosens CPS31D - Digital pH sensorfor potable water and swimming pools ©Endress+Hauser
  • Memosens CPS31D for pH compensation in disinfection processes ©Endress+Hauser
  • The pH-value of a liquid can be calculated using the potentiometric measurement principle. This video shows what it is about and how this measuring principle works.

  • Memosens converts the measured value to a digital signal and transfers it to the transmitter without a contacting connection. This video shows how Memosens optimizes process control and maintenance.

Memosens CPS31D is the digital expert for pH compensation in disinfection processes. Its three diaphragms make it suitable for minimum conductivity while its low drift guarantees stable measurement. The sensor makes sure that swimming pool water is agreeable and drinking water tasteful. Thanks to Memosens technology, CPS31D combines maximum process and data integrity with simple operation. It resists corrosion and moisture, enables lab calibration and facilitates predictive maintenance.


  • Reliable measurement at minimum conductivity thanks to three diaphragms

  • Low drift by very low level of ion depletion in electrolyte

  • Optional salt ring for extended operating time

  • Maximum process safety through non-contact inductive signal transmission

  • Enables predictive maintenance due to storage of sensor and process-specific data

  • Reduced operating costs due to minimized process downtime and extended sensor lifetime

Field of application

  • Drinking water

  • Swimming pool water

  • pH compensation for free chlorine measurement

Features and specifications

Documents / Manuals / Software

Accessories / Spare parts

Success stories


Endress+Hauser Instruments International AG/ Asia Pacific Support Center
Unit 3, 1st Floor, CentrePoint Building 106 Nguyen Van Troi Street Phu Nhuan District Ho Chi Minh City Vietnam
Tel.: +84 28 3842 0026

Related news

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Find out more here close

Please select your country