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Endress+Hauser Oxygen sensor COS61D-AAA1A3

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Digital optical sensor based on the principle of fluorescence quenching, with or without Memosens protocol

Application

• Wastewater treatment plants

– Oxygen measurement and regulation in the activated sludge basin for a highly

efficient biological cleaning process

– Monitoring the oxygen content in the wastewater treatment plant outlet

• Water monitoring

Oxygen measurement in rivers, lakes or seas as an indicator of the water quality

• Water treatment

Oxygen measurement for status monitoring, e.g. of drinking water (oxygen

enrichment, corrosion protection etc.)

• Fish farming

Oxygen measurement and regulation for optimum living and growth conditions

Your benefits

• Optical technology:

– Minimum maintenance

– Maximum availability

• Sensor with digital signal processing:

– Calibration data saved in sensor

– High degree of EMC protection thanks to digital communication with the

transmitter

• Extended maintenance intervals and a high degree of longterm stability

• Intelligent self-monitoring guarantees reliable measured values

• No flow needed - measurement possible in still water

• COS61D - the Liquiline sensor

– Plug&Play: Safe communication based on Memosens protocol

– Optionally with M12 plug for fast connection to the transmitter

• COS61 - the Liquisys sensor

– Compatible with tried-and-tested COS31 with COM2x3W: Easy measuring point

changeover to optical technology

– Compatible with COS41 with COM2x3D with conversion kit

Endress+Hauser COS61D-AAA1A3 (COS61D-1020/0)

	Basic model
	Oxymax COS61D
	Approval:
AA	Non-hazardous area
	Application/Measuring Range:
A1	Oxygen 0...20mg/l
	Sensor Adaption:
A	Fixed cable; crimp sleeves
	Cable length:
3	7m

Measuring system

COS61D

A complete measuring system consists of the following components at least:

• Oxymax COS61D oxygen sensor

• Liquiline CM44x multi-channel transmitter

• Sensor cable, optionally available with M12 connector

• Assembly, e.g. flow assembly COA250, immersion assembly CYA112 or

retractable assembly COA451

Optionally:

• Assembly holder Flexdip CYH112 for immersion operation

• Extension cable CYK11

• Cleaning system

1 Sensor cable

2 Liquiline CM44x

3 Flexdip CYH112

4 Basin rim with railing

5 Oxymax COS61D

6 FlexdipCYA112

COS61

A complete measuring system comprises:

• Oxymax COS61 oxygen sensor

• Transmitter, e.g. Liquisys COM2x3-W

• Sensor cable

• Assembly, e.g. flow assembly COA250, immersion assembly CYA112 or

retractable assembly COA451

Optionally:

• Flexdip CYH112 assembly holder for immersion operation

• VS junction box (for cable extension)

• Cleaning system

Input

Measured values

Dissolved oxygen [mg/l, µg/l, ppm, ppb or %SAT or hPa]

Measuring ranges	Measuring ranges apply for 25 ˚C (77 ˚F) and 1013 hPa (15 psi) With Liquiline CM44x, CM44xR, CM44P or with Liquisys COM2x3-W: • 0 to 20 mg/l • 0 to 400 hPa • 0 to 200 % SAT
	Power supply
Electrical connection	COS61D Connection data • Sensor cable connected directly to the terminal connector of the basic module • Optional: sensor cable plug connected to the M12 sensor socket of the transmitter With this type of connection, the transmitter is already wired at the factory.

	COS61 to field device You connect the sensor directly to the transmitter via the special measuring cable with SXP connector.



Operating life of sensor cap >2 years (under reference operating conditions, protect against direct sunlight)