Endress+Hauser Memosens COS81D

Digital oxygen sensor

Memosens optical oxygen sensor for hygienic applications in Life Sciences, Pharma and Food.

Optical oxygen measurement

Process control in enzyme production, control of culture growth, biotechnology, food industry, general process applications

Standard process connection Pg 13.5
Installation in standard pH assemblies possible

Hygienic, optical sensor for stable oxygen measurement over multiple sterilization cycles
Measurement possible in still water

0.004 to 30 mg/l
0.05 to 330 %SAT
0.1 to 700 hPa

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.

Optical System, stainless steel

Sensor shaft: stainless steel 1.4435
Process seal: FKM (USP <87>, <88> Class VI and FDA)
Seal/O-rings: EPDM, FFKM (USP <87>, <88> Class VI and FDA)

Diameter: 12 mm (0.47 inch)
Shaft length: 120, 220, 360 and 420 mm
(4.72, 8.66, 14.2 and 16.5 inch)

0 to 140 В°C
(32 to 284 В°F)

0.02 to 13 bar abs
(0 to 190 psi)

Pt1000 (Class A according to DIN IEC 60751)

Memosens-connection head

Material certification 3.1
ASME BPE-2016
Regulation (EC) No. 1935/2004