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Turbidity transmitter
Liquisys CUM253

Compact field device for water, wastewater and utilities

  • ©Endress+Hauser

Liquisys CUM253 is a standard transmitter for all analog turbidity sensors. It improves your operational safety thanks to continuous plausibility, process and sensor checks. Select from numerous hardware and software modules, such as relays or fieldbus communication, to adapt it exactly to your measuring task. This modularity also allows you to upgrade the transmitter at any time. A simple menu and calibration make configuration and operation fast and easy.


  • One instrument for turbidity and suspended solids

  • Ultrasimple calibration with user samples and alarm signalling for calibration errors

  • Direct access for manual contact control

  • Automatic sensor self-recognition with calibration data transfer

  • Automatic cleaning start

  • Current input for flow rate monitoring with controller shut off or for feedforward control

  • Sensor live check

Field of application

  • Sewage treatment plants, suspended solids measurement

  • Wastewater treatment

  • Water treatment and drinking water monitoring

  • Surface water: rivers, lakes, sea

  • Service water

Features and specifications

Documents / Manuals / Software

Accessories / Spare parts

Predecessor / Successor

Predecessor: CUM141, CUM141S, CUM151, CUM252

Successor: Liquiline CM442

Success stories


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Tel.: +41 61 715 7700
Fax: +41 61 715 2888
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