Liquisys COM223 is a compact panel transmitter for dissolved oxygen measurement.

Dissolved oxygen transmitter
Liquisys COM223

Compact panel device for water, wastewater, utilities and fish farming

COM223

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Specs at a glance

Input

1-channel transmitter
Output / communication

0/4-20mA, Hart, Profibus.

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Field of application

Liquisys COM223 is a standard transmitter for use with COS41 and COS61 oxygen 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.

The Liquisys COM223 transmitter works with Oxymax COS41 and Oxymax COS61 dissolved oxygen sensors in environmental applications, such as:

O₂ control in the aeration basin
O₂ control and monitoring of drinking water
Surface water monitoring
Process water treatment and monitoring
O₂ control in fish farming for optimum growth conditions

Liquisys COM223 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, calibration plausibility check.
Reliable oxygen control: Current input for flow rate monitoring with controller shut off or for feedforward control.
Easy to operate and service: Simple single-point calibration in air, air-saturated water or in the medium, 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, e.g. P(ID) controller, timer, etc., allow for flexible adaption to all processes.

Predecessor

COM121
COM120

COM220
COM221

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
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
Toilet flushing with a fresh sea breeze

Using seawater to flush toilets can save a lot of drinking water. To ensure a constant water supply, the sensors used must function reliably to meet the water quality objectives (WQO).
Read the full story
Monitoring biological parameters in wastewater

Examination of wastewater, using the Liquistation CSF48 and the Liquiport CSP48 mobile, can provide valuable information about the occurrence of Covid 19 infections in a specific area
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

Language:	English
Version:	17/07/2023
File size:	321 KB
File name:	EC_00575_02.23_CxM2x3.pdf

Language:	Russian
Version:	11/10/2021
File size:	223.1 KB
File name:	EAEC N RU D-DE.PA01.B.00339_21.pdf

	EN
31/12/2014
24/10/2013
20/06/2011
15/09/2005
01/07/2005

Language:	English
Version:	31/12/2014
File size:	822 KB
File name:	TI00199CEN_1514.pdf

Language:	English
Version:	01/10/2005
File size:	541.4 KB
File name:	BA208CEN.pdf

	EN
17/07/2023

	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

Dissolved oxygen transmitterLiquisys COM223

Compact panel device for water, wastewater, utilities and fish farming

Specs at a glance

Input

Output / communication

Field of application

Benefits

Predecessor

Success stories

50% less precipitant - 100% reliability and cooperation

An automated system for pH measurements at AVR

Safe phosphate elimination with minimal effort

Toilet flushing with a fresh sea breeze

Monitoring biological parameters in wastewater

Measuring principle

Application

Characteristic

Design

Material

Dimension

Temperature sensor

Connection

Input

Output / communication

Additional certifications

Back

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

Liquisys M COM223/253 Technical Information

Operating Instructions Liquisys M CXM223/253 HART

Model 840 / 842 Operating instructions

Liquisys M COM223/253 Operating Instructions

Operating Instructions Liquisys M CXM223/253 PROFIBUS

Ex-safety instructions CXM2X3

Additional information for CSA Liquisys

Instructions for service kits Liquisis M

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

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

Back

Kit CXM2X3 Relaismod. 2rel

KIT CXM2X3 relay mod. 2rel / CSA

Kit CXM2X3 Relaismodule 4rel

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 24 AC/DC

Kit CXM223 housing assembly

KIT CXM223 Mechanical housing parts

Kit CXM223 side wall

Kit CXM223 End frame Profibus DP

KIT CXM223 Terminal strip

KIT MKO1 Transmitter O2/Temperature

KIT MKO1 Transmitter O2/Temp./pressure

KIT MKO5 Transmitter O2/Temp./pressure

KIT COM2x3 Central module I1

KIT COM2x3 Central module I1 HART

KIT COM2x3 Central module I2

KIT COM2x3 central module I2 HART

KIT COM2X3 central module Profibus PA

Kit COM2X3 central module Profibus DP

Kit COM2x3: Central mod. PB DP; H/W 2.1x

Kit CxM2x3: Relay mod. for PBDP; H/W2.1x

KIT COM223 terminal strip set

KIT COM223 terminal strip Profibus PA

Kit COM223 terminal strip, Profibus DP

Kit CxM223: Front foil + 6 key lifters

Upgrade "Plus-Package" for LIQUISYS-M

Upgrade Kit from COS41 to COS31+COS61

Upgrade "Plus-Package" for COM 2X3

Upgrade cleaning for LIQUISYS-M

Mounting bracket 96x96 Housing

Memograph M RSG45 data manager

Input

Output

Display

Storage/Recording

Calculations

Ecograph T RSG35 data manager

Input

Dissolved oxygen transmitter
Liquisys COM223