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Analog pH sensor
Orbisint CPS11

Orbisint CPS11 - Analog pH sensor with dirt-repellent PTFE diaphragm ©Endress+Hauser
Orbisint CPS11 - Detai view PTFE diaphragm ©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 standard applications

Orbisint CPS11 is the all-rounder for pH measurement in process and environmental applications. It performs reliably and accurately even in highly alkaline media or hazardous areas. Designed for low maintenance and a long operating life, the sensor offers you best value for money.

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  • Benefits

    • Robust electrode with long poison diffusion path, requires low maintenance due to large, dirt-repellent PTFE ring diaphragm

    • Suitable for harsh applications: Process glass for highly alkaline media and pressure-stable up to 16 bar (232 psi)

    • Optional salt...

  • Field of application

    • Long-term monitoring and limit monitoring of processes with stable process conditions:
      - Chemical industry
      - Pulp & paper industry
      - Power plants (e.g. flue gas washers, boiler feed water)
      - Incineration plants

    • Water treatment:
      - Drinking water

Features and specifications



  • Measuring principle

    Glass electrode

  • Application

    Standard applications in process and the environment. Long-term monitoring, processes with little change.

  • Characteristic

    Very robust, heavy-duty version / high pressure, integrated potential matching, flat membrane available.

  • Measurement range

    pH 0-14

  • Measuring principle

    Gel compact electrode with PTFE ring-diaphragm.

  • Design

    - all shaft lengths with temperature sensor
    - advanced gel technology.
    - With dirt-repellent PTFE diaphragm.

  • Material

    Glass / PTFE

  • Dimension

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

  • Process temperature

    max. 135°C (274°F)

  • Process pressure

    max. 16 bar (230 psi)

  • Temperature sensor

    optional with integrated Pt100 or Pt1000

  • Ex certification

    Simple operational equipment, no certification necessary.

  • Connection

    TOP68 connection head

  • Ingres protection

    IP 68

  • Additional certifications

    Biocompatibility validated acc. to ISO 10993-5 USP (current version).
    TÜV certificate for pressure resistance 16 bar, min. triple overpressure safety.

Documents / Manuals / Software

Accessories / Spare parts

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