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Analog pH sensor
Orbipore CPS91

Glass electrode for heavily polluted media in chemical processes, paper or paint production

  • Orbipore CPS91 - Analog glass pH electrode for heavily soiled media ©Endress+Hauser
  • Orbipore CPS91 - Detail view open aperture ©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 CPS91 is the analog specialist for pH measurement in fibrous media or media with a high content of suspended solids such as dispersions, precipitation reactions or emulsions. The open aperture prevents fouling and guarantees you the most reliable measurement under extreme process conditions.


  • Open aperture for application in heavily soiled media

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

  • Not affected by fluctuations in pressure and temperature

Field of application

  • Chemical processes

  • Pulp and paper industry

  • Contaminated media and suspended solids
    - Dispersions
    - Precipitation
    - Emulsions

With ATEX, FM, and CSA approval for application in hazardous areas.

Features and specifications

Documents / Manuals / Software

Accessories / Spare parts

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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

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