Liquisys M COM253
Technical Data
CompareOxygen
| Measuring Principle | Amperometric oxygen measurement |
| Application | Water, Waste water, process, fish farming |
| Characteristic | 4-wire transmitter with graphic display. |
| Design | Dissolved oxygen transmitter in a field housing made of PC/ABS for COS31/41/71. |
| Material | PC/ABS-housing |
| Dimension | 247x170x115mm (9.63x6.63x4.48inch) |
| Temperature sensor | Display and current output. |
| Input | 1-channel transmitter. |
| Output / communication | 0/4-20mA, Hart, Profibus. |
| Certificates, declarations and approvals | CSA Gen. Purpose. |
The Liquisys COM253 standard transmitter can be used together with the COS41 and COS61 dissolved oxygen sensors. Continuous plausibility checks as well as process and sensor checks increase operational safety. Choose from a wide range of hardware and software modules (such as relays and bus communication) to meet the measuring task. The transmitter can also be upgraded at any time; simple menus and calibration make device setup and operation quick and convenient.
Advantages
Higher operational safety: continuous process check system, user-defined alarm settings, calibration plausibility check
Reliable dissolved oxygen control: current input for flow monitoring with controller switch-off and feedforward control
Simple operation and maintenance: simple one-point calibration in air, oxygen-saturated water or medium, direct manual touch control
Reduced maintenance: automatic cleaning function triggered by alarm or limit switches (using Chemoclean)
Suitable for various applications: multiple expansion functions such as P(ID) controller, timer, etc., flexibly used in various processes
Areas of application
The Liquisys COM253 transmitter can be used with the Oxymax COS41 and Oxymax COS61 dissolved oxygen sensors for environmental industry measurements, such as:
O2 aeration basin control
O2 drinking water control and monitoring
Surface water monitoring
Process water treatment and monitoring
O2 control for optimizing fish pond growth conditions
The Liquisys COM253 uses the following communication protocols and interfaces:
0/4...20 mA
HART
PROFIBUS DP
PROFIBUS PA
E+H Product Configurator
Please enter the product order code to configure
Product comparison
Please enter the order codes of the products to compare in the boxes below (up to three products)
Technical documentation
Technical data
Documents/Manuals/Software
Accessories/Spare parts
Source:Endress+Hauserwebsite public information
Case Studies
Municipal Wastewater Treatment — Wastewater Treatment Plant · Dissolved Oxygen Application Case
Project Background
Municipal Wastewater Treatment customers at the Wastewater Treatment Plant stage have long faced the challenge of insufficient accuracy in effluent quality monitoring and instruments prone to contamination causing data drift, affecting compliance discharge, placing higher demands on the stability and measurement accuracy of Dissolved Oxygen.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Dissolved Oxygen for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Municipal Wastewater Treatment conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Food & Beverage — Food Production Line · Dissolved Oxygen Application Case
Project Background
Food & Beverage customers at the Food Production Line stage have long faced the challenge of high hygienic measurement requirements, with inline instruments needing to withstand CIP/SIP cleaning while maintaining stable accuracy, placing higher demands on the stability and measurement accuracy of Dissolved Oxygen.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Dissolved Oxygen for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Food & Beverage conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Chemical & Pharmaceutical — Reactors and Storage Tanks · Dissolved Oxygen Application Case
Project Background
Chemical & Pharmaceutical customers at the Reactors and Storage Tanks stage have long faced the challenge of highly corrosive media and complex conditions, requiring corrosion-resistant and explosion-proof instruments, placing higher demands on the stability and measurement accuracy of Dissolved Oxygen.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Dissolved Oxygen for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Chemical & Pharmaceutical conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Power & Energy — Power Plant Boiler and Turbine · Dissolved Oxygen Application Case
Project Background
Power & Energy customers at the Power Plant Boiler and Turbine stage have long faced the challenge of unstable measurement under high temperature and pressure, with high maintenance and downtime costs, placing higher demands on the stability and measurement accuracy of Dissolved Oxygen.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Dissolved Oxygen for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Power & Energy conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Related Products
Endress+HauserLiquisys M COM223
Endress+HauserOxymax W COS41
Endress+HauserOxymax COS61D
Endress+HauserOxygen sensor OXYMAX-W COS61
Endress+Hauser溶解氧传感器
Endress+HauserOxymax W COS51D
Endress+HauserMemosens COS51E
Endress+Hauser