Liquisys CPM223 is a compact panel device for analog and digital (Memosens) pH/ORP sensors.

pH/ORP transmitter
Liquisys CPM223

Compact panel device for all industries

CPM223

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Specs at a glance

Input

One-channel-transmitter
Output / communication

0/4-20 mA, Hart, Profibus.
Ingress protection

IP54

See all specifications

Field of application

Liquisys CPM223 is a standard pH/ORP transmitter for all analog and digital Memosens 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 two-point calibration make configuration and operation fast and easy.

The Liquisys CPM223 transmitter works with all pH/ORP glass and ISFET sensors in non-hazardous areas, for example in these industries and their utilities:

Chemicals
Food & Beverages
Power & Energy
Water & Wastewater
Primaries & Metal

Liquisys CPM223 features the following protocols and interfaces:

0/4...20 mA
HART
PROFIBUS DP
PROFIBUS PA

Benefits

More operational safety: Continuous process check system, customized alarm configuration, proven Memosens interface for reliable sensor connection.
Reliable self-monitoring: Sensor check system for pH glass and reference, calibration plausibility check.
Easy to operate and service: Intuitive user interface, hot plug & play with pre-calibrated Memosens sensors, direct access for manual contact control.
Reduced maintenance: Automatic cleaning function (with Chemoclean) triggered by alarm or limit switch.
Fit for every application: Numerous extensions, such as P(ID) controller, timer, etc., allow for flexible adaption to all processes.

Predecessor

CPM120
CPM121

CPM220
CPM221

Success stories

50% less precipitant - 100% reliability and cooperation

IDEA achieved tremendous cost savings through continous monitoring with the CA80PH Analyzer at their site in Wallonia
Read the full story
An automated system for pH measurements at AVR

AVR Waste in Botlek, Rotterdam, processes up to 1.7 million tons of residual waste per year. Discover how they optimized their pH measurement thanks to Endress+Hauser
Read the full story
Automated pH measuring point in wastewater

The Dow plant in Stade relies on Endress+Hauser solutions for pH monitoring in the treatment of production wastewater.
Read the full story
Pure high quality beer and clean wastewater

Discover how Heineken meets all regulations to protect the brazilian environment with the Viomax CAS51D digital nitrate or SAC sensor from Endress+Hauser.
Read the full story
Safe phosphate elimination with minimal effort

Thanks to Endress+Hauser the Wastewater treatment plant in Breuberg meets legal requirements and ensures safe phosphate elimination.
Read the full story

Simple products
Easy to select, install and operate

Technical excellence

Simplicity

What is FLEX?

Standard products
Reliable, robust and low-maintenance

Technical excellence

Simplicity

What is FLEX?

High-end products
Highly functional and convenient

Technical excellence

Simplicity

What is FLEX?

Specialized products
Designed for demanding applications

Technical excellence

Simplicity

Variable

What is FLEX?

FLEX selections	Technical excellence	Simplicity
F L E X Fundamental selection Meet your basic measurement needs	Technical excellence	Simplicity
F L E X Lean selection Handle your core processes easily	Technical excellence	Simplicity
F L E X Extended selection Optimize your processes with innovative technologies	Technical excellence	Simplicity
F L E X Xpert selection Master your most challenging applications	Technical excellence	Simplicity Variable

Learn more about the FLEX selections

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Related topics
Memosens 2.0: Cutting-edge sensor technology reloaded

Make life easier, increase process safety and stay connected with Memosens 2.0 digital technology.
More information

Measuring principle

Potentiometric
Application

Water, waste water, process
Characteristic

4-wire transmitter with a two-line display
Design

pH/ORP transmitter in a panel housing (96x96 mm)
Material

panel housing
Dimension

96 mm x 96 mm x 146 mm(built in depth)
3.74x3.74x5.61 inch (built in depth)
Temperature sensor

Display and current output
Ex certification

No
Ingress protection

IP54
Input

One-channel-transmitter
Output / communication

0/4-20 mA, Hart, Profibus.
Additional certifications

CSA Gen. Purpose

Measuring principle

Sensor ORP / Redox
Application

Water, waste water, process water
Characteristic

4-wire transmitter with a two-line display
Design

pH/ORP-transmitter in a panel housing
Material

panel housing
Dimension

96mm x 96mm x 146mm (built in depth)
Temperature sensor

Display and current output
Ex certification

No
Ingress protection

IP54
Input

One-channel-transmitter
Output / communication

0/4-20mA, Hart, Profibus.
Additional certifications

CSA Gen. Purpose

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	EN
01/09/2015
24/10/2013
20/06/2011
01/12/2005
01/03/2005

Language:	English
Version:	01/09/2015
File size:	2.7 MB
File name:	BA00194CEN_1515.pdf

	EN
30/09/2014
24/10/2013
20/06/2011
01/09/2007
01/04/2004

Language:	English
Version:	30/09/2014
File size:	999.7 KB
File name:	TI00194CEN_1514.pdf

	EN
30/09/2014
24/10/2013
20/06/2011
01/09/2007
01/04/2004

Language:	Japanese
Version:	08/02/2024
File size:	5.8 MB
File name:	pH selection guide_CP00010C.pdf

Language:	German
Version:	01/12/2021
File size:	3.3 MB
File name:	CP00010CDE_1621_pH Auswahlhilfe_2021.pdf

Language:	Russian
Version:	11/10/2021
File size:	201.2 KB
File name:	EAEC N RU D-DE.PA01.B.00347_21.pdf

	EN
01/10/2005
01/07/2002

	EN
01/12/2011
01/08/2009
01/09/2007
01/07/2006
01/10/2005

	EN
07/06/2005
27/09/2004
29/02/2004

	EN
01/05/2000

pH/ORP transmitter Liquisys CPM223

Compact panel device for all industries

Specs at a glance

Input

Output / communication

Ingress protection

Field of application

Benefits

Predecessor

Success stories

50% less precipitant - 100% reliability and cooperation

An automated system for pH measurements at AVR

Automated pH measuring point in wastewater

Pure high quality beer and clean wastewater

Safe phosphate elimination with minimal effort

Could also interest you

Memosens 2.0: Cutting-edge sensor technology reloaded

Measuring principle

Application

Characteristic

Design

Material

Dimension

Temperature sensor

Ex certification

Ingress protection

Input

Output / communication

Additional certifications

Measuring principle

Application

Characteristic

Design

Material

Dimension

Temperature sensor

Ex certification

Ingress protection

Input

Output / communication

Additional certifications

Back

Liquisys M CPM223/253 Operating Instructions

Liquisys M CPM223/253 Technical Information

Liquisys M CPM223/253 Technical Information

Operating Instructions Liquisys M CXM223/253 HART

Operating Instructions Liquisys M CXM223/253 PROFIBUS

Liquisys M CPM223/253 Operating Instructions

Ex-safety instructions CXM2X3

Additional information for CSA Liquisys

Instructions for service kits Liquisis M

AMS HART Package V1.12.00 Manufacturer Information includes AMS - Device List, Release Notes – HART

PRM HART Package V1.08.00 Manufacturer Information includes PRM - Device List, Release Notes – HART

Simatic PDM PROFIBUS Package V1.12.00 Manufacturer Information includes PDM - Device List, Release Notes – PROFIBUS

AMS FOUNDATION fieldbus Package V1.06.00 Manufacturer Information includes AMS - Device List, Release Notes – FOUNDATION fieldbus

Simatic PDM HART Package 1.14.00 Manufacturer Information includes PDM - Device List, Release Notes – HART

PRM FOUNDATION fieldbus Package V1.05.00 Manufacturer Information includes PRM - Device List, Release Notes – FOUNDATION fieldbus

pH measurement in industrial processes

産業プロセスにおけるpH測定

pH-Messung in Industrieprozessen

Product family: Liquisys pH/ORP

Product family: Liquisys chlorine, Liquisys conductivity, Liquisys oxygen, Liquisys pH/ORP

Product family: Liquisys chlorine, Liquisys conductivity, Liquisys oxygen, Liquisys pH/ORP

Product family: Liquiline, Liquiline M, Liquisys chlorine, Liquisys conductivity, Liquisys oxygen, Liquisys pH/ORP, New analyzer pla tform, SmarTec, SmarTec S, TOC Analyzer, TOCII

Back

Kit CXM2X3 Relaismod. 2rel

KIT CXM2X3 relay mod. 2rel / CSA

Kit CXM2X3 Relaismodule 4rel

Kit CxM2x3: realy modul 4 REL prot. coat

KIT CXM2X3 relay mod. 4rel / CSA

Kit CXM2X3 Relais Mod. 2rel.+I/CSA

Kit CXM2X3 Relais Mod. 4Rel+I/CSA

KIT CXM2X3 power supply 100..230 V AC

KIT CXM2X3 power supply AC prot.coating

KIT CxM2x3 power supply 24 AC/DC

Kit CXM223 housing assembly

KIT CXM223 Mechanical housing parts

Kit CXM223 side wall

Kit CXM223 End frame Profibus DP

KIT CXM223 Ground terminal strip

pH/ORP transmitter
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