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Measuring principle
Optical oxygen measurement
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Application
Aeration tank, river monitoring, water treatment, fish farming
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Characteristic
Digital, optical measurement of dissolved oxygen based on fluorescence quenching
Measurement possible in still water -
Measurement range
0 to 20 mg/l
0 to 200 %SAT
0 to 400 hPa -
Measuring principle
Oxygen-sensitive molecules (marker) are integrated in an optical active layer (fluorescence layer). The fluorescence layer surface is in contact with the medium. The sensor optics are directed at the back of the fluorescence layer. The sensor optics transmit green light pulses to the fluorescence layer. The markers respond (fluoresce) with red light pulses. The duration and intensity of the response signals depend directly on the oxygen contents or partial pressure.
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Design
Calibration data saved in sensor
High degree of EMC protection -
Material
Sensor shaft: stainless steel 1.4435
Membrane cap: POM -
Dimension
Diameter: 40 mm (1.57 inch)
Shaft length: 186 mm (7.32 inch) -
Process temperature
-5 to 60 °C
(20 to 140 °F) -
Process pressure
Max. 10 bar abs
(Max. 145 psi) -
Temperature sensor
NTC 30K
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Connection
Process connection: G1, NPT 3/4″
Cable connection: fixed cable or TOP68 plug-in-head
Field of application
Oxymax COS61D is a high-performance, digital oxygen sensor that offers fast, accurate and drift-free measurement. It supports your process with low maintenance, high availability and easy handling. The sensor’s long-term stable fluorescence layer is exclusively oxygen-selective (interference-free), ensuring consistently reliable measurement. Thanks to Memosens digital technology, the Oxymax COS61D combines maximum process and data integrity, and facilitates simple lab calibration.
Oxymax COS61D measures the dissolved oxygen concentration in:
Wastewater treatment plants:- O2 control in the aeration basin- Process water treatment and monitoring
Water works:- Status monitoring of drinking water (oxygen enrichment, corrosion protection, etc.)- Water quality monitoring in rivers, lakes or seas
Utilities of all industries:- O2 control in the biological treatment- Process water treatment and monitoring
Fish farming:- O2 control for optimum growth conditions
Benefits
Minimum maintenance, maximum availability Fast, drift-free measurement for precise aeration control and process monitoring Long-term stability for increased process safetyOutstanding performance in all aeration processes (SBR, Anamox, etc.)Chemical-free: no electrolyte handling