98 Technical Manual | Dräger Polytron
®
8000 Series
Performance Approvals
– Remote sensor (except Polytron
®
8100 EC)
Not approved are fieldbus interface and data logger.
20.3 Deviations from operating conditions with
DrägerSensor O
2 and O2LS
O2 sensor cross sensitivities
There are no known cross sensitivities against interfering gases with a
concentration up to 100 ppm. For detailed information, contact Dräger.
20.3.1 DrägerSensor O2 (6809720)
The DrägerSensor O2 (6809720) is an electrochemical 2-electrode sensor for
measuring Oxygen (O
2) in ambient air.
Environmental parameters
Pressure 20.7 to 38.4 in. Hg (700 to 1300 hPa)
Humidity 10 to 95%RH, non-condensing
Temperature -5 to +40 °C
short term -20 to +55 °C
Storage
Pressure no influence
Humidity 30 to 70%RH, non-condensing
(only relevant if sensor packaging open)
Temperature 0 to +40 °C
Time Storing of sensors is not intended. Sensors should
be used upon arrival. Remaining service life =
Expected Service life - Storage time
Influence of environmental parameters
Zero point
Span
1)
1) Relative deviation of display reading is caused by atmospheric pressure changes.
Temperature
2)3)
2) At temperatures below -5 °C the measurement deviation is higher than specified in the EN
50104.
-20 to 55 °C < ± 0.2 Vol%O2 Relative deviation from
reading at 20 °C
-10 to 55 °C - < ± 8%
-10 to -20 °C - < ± 16%
Pressure < ±0.2 Vol%O
2 Relative deviation from
reading at 1013 hPa:
< 10% of measurement
value / 100 hPa
Humidity No influence Relative deviation from
reading at 50 % r.H.:
< 1 % of measurement
value
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