Technical data Oxymax COS22
30 Endress+Hauser
Long-term drift < 4 % per month in reference operating conditions
≤ 1 % per month in operation with reduced oxygen concentration (< 4 Vol% O
2
)
Influence of the medium
pressure
Pressure compensation not required
Polarization time
COS22-*1 (standard sensor): < 30 min for 98% signal value, 2 h for
100%
COS22-*3 (trace sensor): < 3 h for 98% signal value, 12 h for 100%
Intrinsic oxygen
consumption
COS22-*1 (standard sensor): Approx. 20 ng/h in air at 25 ˚C (77 ˚F)
COS22-*3 (trace sensor): Approx. 100 ng/h in air at 25 ˚C (77 ˚F
Operating time of the
electrolyte
→ 24
Temperature compensation COS22
Compensation of the membrane properties depending on the transmitter, recommended:
2.4 % per K
13.3 Environment
Ambient temperature
range
-5 to +135 °C (23 to 275 °F), non-freezing
Storage temperature –5 to +50 ˚C (20 to 120 ˚F) at 95% relative humidity, non-condensing
NOTICE
Danger of sensor drying out
‣
Store the sensor with the watering cap only (filled with tap water).
Degree of protection IP 68 (10 m (33 ft) head of water at 25 ˚C (77 ˚F) over 45 days, 1 mol/l KCl)
Humidity 0 to 100%, not condensating in area of T-82 connection
13.4 Process
Process temperature
-5 to +135 °C (23 to 275 °F), non-freezing
Process pressure Ambient pressure ... 12 bar (... 174 psi) absolute
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