Endress+Hauser CPM223-MR0005 | Liquisys M pH/ORP Transmitter, 2x 4-20mA, 100-230V AC

Endress+Hauser CPM223-MR0005 panel-mount pH/ORP transmitter. 2 analog outputs (4-20mA), 2 relays, 96x96mm cutout, 100-230V AC, for CPS/CPS series sensors.

Product Overview

The Endress+Hauser CPM223-MR0005​ is a panel-mounted pH and ORP transmitter​ from the Liquisys M CPM223 series. It accepts inputs from analog pH/ORP sensors (e.g., CPS11D, CPS41 series with matching head transmitter or direct analog electrode) and provides two 4-20mA outputs, two relay contacts, and a clear LCD display. Powered by 100-230V AC, it is widely used for monitoring and control in water treatment, chemical dosing, and wastewater neutralization.

Technical Specifications (Electrical & Functional)

Technical Specifications (Mechanical & Environmental)

Key Features

• Dual Relay Control:​ Two SPDT relays allow independent high/low alarm or PID control functions (e.g., dosing pump on/off based on pH setpoint).

• Temperature Compensation:​ Automatic Pt100/Pt1000 input for temperature-compensated pH readings; also supports manual or fixed temp. compensation.

• Calibration Wizard:​ Step-by-step on-screen guide for 1-point (zero) and 2-point (slope) pH calibration or ORP offset calibration.

• Flexible Output Mapping:​ Both 4-20mA outputs can be assigned to pH/mV, temperature, or calculated values (e.g., deviation).

Applications

• Wastewater Neutralization:​ pH monitoring and dosing control in industrial effluent treatment.

• Chemical Process:​ ORP monitoring for oxidation-reduction reactions (e.g., chlorine/ozone disinfection control).

• Drinking Water:​ Post-treatment pH adjustment verification.

• Pool & Spa:​ pH and redox potential (ORP) monitoring in large aquatic facilities.

Note: For Memosens digital pH/ORP sensors (CPF81D, CPS11D with Memosens), the compatible transmitter is CM442​ or CM42​ series. CPM223 is intended for conventional analog sensors or sensors with a separate head transmitter.