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Dräger Polytron 7000
Technical data
Stabilisation time:
5 x t
0...90
Measuring range
0-5 vol% O
2
to 0-100 vol% O
2
Standard: 25 vol% O
2
Minimum display: -1.25 vol% O
2
Warm-up time of the sensor
Operation: < 20 minutes / calibration:
≤
2 hours
14.3.2 DrägerSensor
O
2
LS (6809630)
The DrägerSensor O
2
LS (6809630) is an electrochemical three-electrode sensor
for the measurement of oxygen (O
2
) in the ambient air.
Humidity
30 to 70 % rh, non-condensing
(only relevant if sensor packaging is open)
Temperature
0 to +40 °C
Duration
Storage of sensors is not anticipated. Sensors
should be used from the point of arrival. Remain-
ing life span = expected life span - storage period
Effect of ambient parameters
Zero-point
Sensitivity
Temperature
1)2)
1) For temperatures below -5 °C the measurement deviation is greater than specified in EN
50104.
2) A calibration at operating temperatures must occur for operating temperature outside the
range of -5 °C to 40 °C.
-20 to 55 °C
< ± 0.2 vol% O
2
Relative deviation from
display at 20 °C
-10 to 55 °C
-
< ± 8%
-10 to -20 °C
-
< ± 16%
Pressure
< ±0.2 vol% O
2
Relative deviation from
display at 1013 hPa:
< 10% of the measured
value / 100 hPa
Humidity
No effect
Relative deviation from
display at 50 % rh:
< 2.5 % of the measured
value
Reaction time
1)
1) The measured value response time may increase at temperatures below -5 °C.
t
0...20
t
0...90
0 to 25 vol% O
2
≤
10 seconds
≤
26 seconds
Storage
Ambient parameters
Pressure
20.7 to 38.4 in. Hg (700 to 1300 hPa)
