Specs at a glance
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Input
1-channel transmitter.
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Output / communication
0/4-20mA, Hart, Profibus.
Field of application
Liquisys COM253 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 COM253 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 COM253 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
Success stories
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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
| FLEX selections | Technical excellence | Simplicity |
|---|---|---|
Fundamental selection Meet your basic measurement needs |
Technical excellence
|
Simplicity
|
Lean selection Handle your core processes easily |
Technical excellence
|
Simplicity
|
Extended selection Optimize your processes with innovative technologies |
Technical excellence
|
Simplicity
|
Xpert selection Master your most challenging applications |
Technical excellence
|
Simplicity
Variable |
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Technical Information (TI)
Liquisys M COM223/253 Technical Information
Transmitter for oxygen sensors
EN Select other language 31/12/201424/10/201320/06/201111/09/200501/07/2005Language:
English
Version:
31/12/2014
File size:
822 KB
File name:
TI00199CEN_1514.pdf
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Operating Instruction (BA)
Operating Instructions Liquisys M CXM223/253 PROFIBUS
Field Communikation for Liquisys M CXM223/253
EN Select other language 01/12/201101/08/200901/09/200701/07/200601/10/2005Language:
English
Version:
01/12/2011
File size:
1.7 MB
File name:
BA209CEN_1311.pdf
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Operating Instruction (BA)
Liquisys M COM223/253 Operating Instructions
Transmitter
EN Select other language 01/09/201524/10/201320/06/201115/09/200501/07/2005Language:
English
Version:
01/09/2015
File size:
2.4 MB
File name:
BA00199CEN_1515.pdf
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Operating Instruction (BA)
Model 840 / 842 Operating instructions
Transmitter for dissolved oxygen
Language:
English
Version:
01/07/2002
File size:
1.7 MB
File name:
BA199e10.pdf
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Operating Instruction (BA)
Operating Instructions Liquisys M CXM223/253 HART
Field Communication with Liquisys M CXM223/253
EN Select other language 01/10/200501/07/2002Language:
English
Version:
01/10/2005
File size:
541.4 KB
File name:
BA208CEN.pdf
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Ex Safety Instruction (XA)
Ex-safety instructions CXM2X3
Safety instructions for electrical apparatus for explosion-hazardous
areas as per EC Directive 94/9/EC (ATEX)EN Select other language 07/06/200527/09/200429/02/2004Language:
English
Version:
07/06/2005
File size:
2.5 MB
File name:
XA194CA3.pdf
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Special Documentation (SD)
Instructions for service kits Liquisis M
Special documents
Instructions for service kits Liquisis M / CPM253 / CLM253 / COM253 /
CUM253EN Select other language 01/05/2000Language:
English
Version:
01/05/2000
File size:
198.2 KB
File name:
SD084CA2.pdf
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Special Documentation (SD)
Additional information for CSA Liquisys
Additional information for CSA Liquisys
Language:
English
Version:
24/09/2013
File size:
84.3 KB
File name:
CXM2X3_Beiblatt for CSA.pdf
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Special Documentation (SD)
Installation of M 12 plug
Special Documentation Installation of M 12 plug
CPM253 / COM253 / CLM253 / CUM253EN Select other language 01/10/1999Language:
English
Version:
01/10/1999
File size:
85.5 KB
File name:
SD052CA2.pdf
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EU Declaration
Product family: Liquisys chlorine, Liquisys conductivity, Liquisys oxygen, Liquisys pH/ORP
Product root: CCM223-, CCM253-, CLM223-, CLM253-, COM223-, COM253-, CPM223-, CPM253-
Declaration number: EC_00575_02.23EN Select other language 17/07/2023Language:
English
Version:
17/07/2023
File size:
321 KB
File name:
EC_00575_02.23_CxM2x3.pdf
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