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Endress+Hauser Liquisys M CPM253-PR0105: Field pH/ORP Transmitter

News November 05, 2026

Endress+Hauser Liquisys M CPM253-PR0105

Robust Field Transmitter for pH and ORP Measurement

Endress+Hauser Liquisys M CPM253-PR0105 pH ORP field transmitter

The Endress+Hauser Liquisys M CPM253-PR0105 is a one-channel field transmitter for pH, ORP and temperature measurement. Its durable PC/ABS field housing supports wall, post and outdoor cabinet installations in water, wastewater and industrial process applications.

Order-code focus: According to the Endress+Hauser CPM253 product structure, PR identifies the basic version for glass pH electrodes and ORP measurement; code 0 specifies 230 V AC, code 1 provides two 20 mA outputs, and code 05 indicates no additional contacts. Always confirm the final configuration from the device nameplate and original order documents.

Why Choose the Liquisys M CPM253?

Reliable pH/ORP Monitoring

Continuous process, sensor and calibration plausibility checks help identify measurement problems early and support dependable plant operation.

Field-Ready Housing

The 247 x 170 x 115 mm PC/ABS enclosure is rated IP65 and NEMA Type 4X for demanding field installations.

Clear Operation

A two-line display, structured menu and two-point calibration make commissioning and routine operation straightforward.

CPM253-PR0105 Configuration

ItemSpecification
Sensor input / softwareGlass pH electrode / ORP, basic version (PR)
Power supply230 V AC (code 0)
Outputs2 x 20 mA, primary value plus secondary value (code 1)
Additional contactsNot selected (code 05)
Measured variablespH, ORP and temperature
Measuring rangespH 0 to 14; ORP -1500 to +1500 mV / 0 to 100%
Housing / dimensionsPC/ABS field housing, 247 x 170 x 115 mm
Ingress protectionIP65, NEMA Type 4X

Typical Applications

  • Drinking water and municipal wastewater treatment
  • Chemical and pharmaceutical processes
  • Food and beverage utilities
  • Condensate and industrial water treatment
  • Electroplating and process-water monitoring

Selection and Replacement Advice

  • Confirm the complete order code and serial number from the nameplate.
  • Check the connected glass pH or ORP sensor and temperature element.
  • Verify the 230 V AC supply and both current-output assignments.
  • Confirm mounting position, cable glands and environmental protection before installation.

Request a Quotation

Please send the complete order code, quantity, destination country and a clear nameplate photo so we can verify the required configuration.

HONGKONG XIEYUAN TECH CO., LIMITED
Email: becky@hkxytech.com
Web: www.hkxytech.com
Mobile: +86-15972186287 (WhatsApp & WeChat)

Technical reference: Endress+Hauser Liquisys M CPM253 product information and CPM223/253 technical documentation. Verify the final device configuration from the exact order code and nameplate.

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