Liquisys-COM253
Endress+Hauser 1-channel 4-wire dissolved Liquisys COM253
Other Brands
Endress+Hauser 1-channel 4-wire dissolved Liquisys COM253
['Home', 'Liquid Analysis', 'Dissolved Oxygen', 'Liquisys COM253'] Need Endress+Hauser Liquisys COM253? 1-channel 4-wir…
Specifications
| Brand | Endress+Hauser |
|---|---|
| Model Number | Liquisys COM253 |
| Official Product Name | Liquisys COM253 Dissolved Oxygen Transmitter |
| Applicable System | COS41 / COS61 (Oxymax) dissolved oxygen sensor systems |
| Product Type | 1-channel 4-wire dissolved oxygen transmitter |
| Equivalent Standard | Available on request |
| Product Status | Active / Available |
| Input | 1-channel transmitter |
| Output / communication | 0/4-20 mA, HART, PROFIBUS DP, PROFIBUS PA |
| Application | Water, wastewater, process, fish farming |
| Sensor compatibility | COS41, COS61 (Oxymax) |
| Housing material | PC/ABS |
| Dimensions | 247 x 170 x 115 mm |
| Display | Graphic display (4-wire) |
| Certificates | CSA General Purpose |
| Predecessor models | COM141S, COM240S, COM340, COM141, COM130, COM140, COM240, COM151, COM252 |
| Measuring principle | Amperometric oxygen measurement |
Product Description
It provides a 0/4-20 mA output with HART and PROFIBUS DP/PA communication, continuous plausibility and sensor self-checks, simple single-point calibration and a modular design that can be extended with relays, fieldbus and controller functions for water, wastewater, process and fish-farming applications. The Endress+Hauser Liquisys COM253 is a compact 1-channel field transmitter for dissolved oxygen measurement with COS41 and COS61 (Oxymax) sensors.
Basic Product Information
- Outputs 0/4-20 mA with HART and PROFIBUS DP/PA communication
- Continuous plausibility, process and sensor self-checks for safety
- Simple single-point calibration in air, air-saturated water or medium
- Modular hardware and software extensions (relays, fieldbus, P(ID), timer)
- Automatic cleaning support via Chemoclean
- 1-channel transmitter for COS41 and COS61 dissolved oxygen sensors
Technical Specifications
Version & Model Difference
- [{'item': 'Series', 'value': 'Liquisys COM family; successor to COM140/COM240 generation'}, {'item': 'Communication', 'value': 'Supports HART and PROFIBUS; base variant uses 0/4-20 mA output'}]
Application Scenarios
- O2 control in aeration basins (wastewater)
- Drinking water O2 monitoring
- Surface water monitoring
- O2 control in fish farming for optimum growth
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Frequently Asked Questions
Which sensors work with the Liquisys COM253?
It is a standard transmitter for Endress+Hauser COS41 and COS61 (Oxymax) dissolved oxygen sensors used in water, wastewater and fish-farming applications.
What output and communication options does it support?
The COM253 provides a 0/4-20 mA output and supports HART as well as PROFIBUS DP and PROFIBUS PA fieldbus communication.
How is the transmitter calibrated?
Calibration is a simple single-point procedure performed in air, air-saturated water or the measured medium, with direct manual contact control.
What are the housing dimensions and material?
The field housing is made of PC/ABS and measures 247 x 170 x 115 mm; it carries a CSA General Purpose approval. Contact us for exact specifications on power supply.
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