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Digital pH sensor
Ceraliquid CPS41D

Memosens glass electrode for the chemical and life sciences industries

  • Ceraliquid CPS41D - Memosens pH sensor with refillable liquid KCl electrolyte ©Endress+Hauser
  • Ceraliquid CPS41D - Version for hazardous areas ©Endress+Hauser
  • Ceraliquid CPS41D for harsh chemical applications ©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.

Ceraliquid CPS41D is the digital high performer for harsh chemical applications, media with low conductivity or a considerable content of organic solvents. The sensor is designed for fast response guaranteeing you high process safety even in applications with fast-changing media. Thanks to Memosens digital technology, CPS41D combines maximum process and data integrity with simple operation. It resists corrosion and moisture, enables lab calibration and facilitates predictive maintenance.


  • Resistant to poisoning due to constant refilling of KCl bridge electrolyte and separate reference lead

  • Applicable at very low conductivities (= 0.1 µS/cm) thanks to liquid KCl electrolyte

  • Suitable for cleaning in place (CIP) and sterilization in place (SIP)

  • Perfectly suited for quickly changing media: Combination of liquid KCl electrolyte and ceramic diaphragm enables fast response time

  • 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

Media with very low conductivities or a considerable amount of organic solvents or alcohols and fast changing media:

  • Chemical industry

  • Power plants, e.g. boiler feed water

  • Life sciences, e.g. water for injection

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

Features and specifications

Documents / Manuals / Software

Accessories / Spare parts

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