button cancel
Try searching by key words, order- or product code or serial number e.g. “CM442” or “Technical information”
Enter at least 2 characters to start the search.
Liquisys COM253 is a compact field transmitter for dissolved oxygen measurement.

Dissolved oxygen transmitter
Liquisys COM253

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

COM253
Loading price
Prices temporarily unavailable
Price on request
activating price
price: provide information
from CHF ??.-
Dissolved oxygen transmitter Liquisys COM253 ©Endress+Hauser

Specs at a glance

  • Input

    1-channel transmitter.

  • 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

  • Simple products

  • Easy to select, install and operate

Technical excellence

Simplicity

  • Standard products

  • Reliable, robust and low-maintenance

Technical excellence

Simplicity

  • High-end products

  • Highly functional and convenient

Technical excellence

Simplicity

  • Specialized products

  • Designed for demanding applications

Technical excellence

Simplicity

Variable

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
Compare products

We value your privacy

We use cookies to enhance your browsing experience, collect statistics to optimize site functionality, and deliver tailored advertisements or content.

By selecting "Accept all", you consent to our use of cookies.
For further details please review our cookie policy .