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Analog pH sensor
Orbipac CPF81

Compact electrode for wastewater, primaries and metal

  • Orbipac CPF81 - Compact analog pH sensor for harsh environments ©Endress+Hauser
  • Orbipac CPF81 - Compact analog pH sensor for harsh environments ©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.

Orbipac CPF81 is the analog simple solution for pH measurement in harsh environments. It measures reliably and accurately even in fibrous media and at high flow rates. With its integrated assembly, the electrode saves you space and time during flow or immersion installation.


  • Suitable for flow and immersion installation

  • Long time stable: Second electrolyte bridge for better protection against electrode poisoning ions such as S2- or CN-

  • Robust polymer housing protects against mechanical damage

  • Optional flat membrane suitable for high flow rates, fibrous media, and mining applications

Field of application

Orbipac CPF81 is the robust pH sensor for processes in mining industries and treatment of industrial water and wastewater. It monitors

  • Flotation

  • Leaching

  • Neutralization

  • Inlet and outlet

Features and specifications

Documents / Manuals / Software

Accessories / Spare parts

Predecessor / Successor

Predecessor: CPF10, CPF91

Success stories


Endress+Hauser Instruments International AG
Middle East Support Centre 7WB-2100, Dubai Airport Free Zone P.O. Box 293828 Dubai United Arab Emirates
Tel.: +971 4 253 51 00
Tel.: +971 4 609 18 11

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