Analog pH sensor
Orbipore CPS91

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.

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

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.

  • Edut

    • 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

  • Käyttöalue

    • 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.

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  • Mittausperiaate

    Glass electrode

  • Application

    - Process applications - media with high contamination: emulsions, suspensions, precipitation reactions - min. conductivity >500µS/cm.

  • Characteristic

    - rapid response - new, stabilised gel insensitive to contaminations

  • Measurement range

    pH 0-14

  • Measuring principle

    - Open aperture - double gel reference

  • Design

    - all shaft lengths with temperature sensor - advanced gel technology

  • Material

    Glass

  • Dimension

    Diameter: 12 mm (0.46 inch)
    Shaft lengths: 120, 225, 360 and 425 mm
    (4.68, 8.77, 14.04 and 16,57 inch)

  • Process temperature

    max. 110°C
    (230°F)

  • Process pressure

    max. 10 bar
    (145 psi)

  • Temperature sensor

    Optional with integrated Pt100 or Pt1000.

  • Ex certification

    Simple operational equipment, no certification necessary.

  • Connection

    TOP68 plug-in head

  • Ingres protection

    IP68

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