The Endress+Hauser Group

Media center

Endress+Hauser Events

Your career with Endress+Hauser

Support close to you

Online Shop

Enter your personal login to access the Online Shop and place your order 24/7. Additionally, you can check your product prices and delivery times, or you may request a quote.

Online Shop

E-direct Shop

E-direct compliments our traditional offering by providing you with a quick, effective way to purchase easy-to-configure, entry-level instrumentation.

E-direct Shop

Digital pH sensor
Orbipac CPF81D

Memosens compact electrode for wastewater, primaries and metal industries

  • Orbipac CPF81D - Compact digital pH sensor for harsh environments ©Endress+Hauser
  • Orbipac CPF81D - Compact Memosens pH sensor for primaries and industrial wastewater ©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.

  • Memosens converts the measured value to a digital signal and transfers it to the transmitter without a contacting connection. This video shows how Memosens optimizes process control and maintenance.

Orbipac CPF81D is the digital, simple solution for harsh environments. It measures reliably and accurately even in fibrous media and at high flow rates. With its integrated assembly, the electrode saves space and time during flow or immersion installation. Thanks to Memosens digital technology, CPF81D combines maximum process and data integrity with simple operation. It resists corrosion and moisture, enables lab calibration and facilitates predictive maintenance.


  • 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 and fibrous media

  • Maximum process safety through non-contact inductive signal transmission

  • Enables predictive maintenance due to storage of sensor and process-specific data

  • Reduced operating costs due to minimized process downtime and extended sensor lifetime

Field of application

Orbipac CPF81D 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

Success stories


Endress+Hauser Inc.
2350 Endress Place Greenwood , IN 46143 United States
Tel.: 888-363-7377
Fax: 317-535-8498
Send email

Related news

Online Tools