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Digital pH sensor
Orbipore CPS91D

Memosens glass electrode for highly turbid media in chemical processes, paper or paint production

  • ©Endress+Hauser
  • ©Endress+Hauser
  • ©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.

Orbipore CPS91D is the digital specialist for heavily soiled or fibrous media, suspensions, emulsions or precipitation reactions. The open aperture prevents fouling and guarantees you the most reliable measurement under extreme process conditions. Thanks to Memosens digital technology, CPS91D combines maximum process and data integrity with simple operation. It resists corrosion and moisture, enables lab calibration and facilitates predictive maintenance.


  • Open aperture for application in heavily soiled media

  • Low maintenance and long service life due to stabilized gel filling

  • Short response time

  • Insensitive to pressure and temperature variation

  • Maximum process safety through non-contact inductive signal transmission

  • Easy handling due to storage of sensor-specific data

Field of application

  • Chemical processes

  • Heavily soiled media:
    - Solids
    - Emulsions
    - Precipitation

With ATEX and FM approval for application in hazardous areas.

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Endress+Hauser d.o.o. Slovenija
Pot k sejmišču 26 a 1231 Ljubljana - Črnuče , Slovenia
Tel.: +386 1 514 02 50
Fax: +386 1 519 22 98

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