Dräger Polytron 8100, Инструкция по эксплуатации, Страница: 38 / 254

38 Dräger Polytron 8100
Technical data
10 Technical data
10.1 Approvals
10.1.1 ATEX, IECEx, UL, CSA
Refer to figure L on the fold-out page.
See printout of approval label inside the shipping box of the
instrument.
EC type examination
Dräger Polytron 8100 with Dräger sensor O2 or Dräger sensor
O2-LS (Oxygen) 4-20 mA signal output and relay output in
accordance with BVS 13 ATEX G 001 X and PFG 14 G 001 X.
Fieldbus interfaces are not in accordance with BVS 13 ATEX
G 001 X
 For the detection of oxygen-enriched atmospheres or
oxygen deficiency with a measurement range of
0-25 Vol% O2.

For inertization with a measurement range
0-5...25 Vol% O2.
10.1.2 DIN EN 50104 for DrägerSensor O
2
(6809720)
Sensor Principle
The DrägerSensor O
2
(6809720) is an electrochemical two-
electrode sensor for measuring Oxygen (O
2
) in ambient air.
CAUTION
Specifications and restrictions in the Instructions for
Use and/or data sheets for the sensors used must be
observed. For SIL applications the Dräger Polytron
8x00 Safety Manual must be observed.
The measuring range and performance
characteristics are dependent on the installed sensor
(see the Instructions for Use and/or data sheet for the
installed sensors).
NOTICE
External or remote mounted sensors are not in
accordance with BVS 13 ATEX G 001 X and
PFG 14 G 001 X.
Type: ETR 040*, 050*
(*) Interface: “d” 4-20 mA (0) or “d” 4-20 mA with relays (1) or
“d+e” 4-20 mA (l) or “d+e” 4-20 mA with relays (J).
!
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Reaction at electrodes
Measuring electrode
O
2
+ 2 H
2
O + 4 e
–
=> 4 OH
–
Counter electrode
2 Pb => 2 Pb
2
+ + 4 e
–
Environmental parameters
Pressure 20.7 to 38.4 in. Hg (700 to1300 hPa)
Humidity 10 to 95%RH, non-condensing
Temperature -5 to +40 °C, short term -20 to +55 °C
Storage humidity 30 to 70%RH, non-condensing
(Relevant if sensor package is
opened)
Storage temperature 0 to +40 °C
Influence on environmental parameters:
Temperature:
Zero point: Deviation in the range -20 to 55 °C:
< ± 0.2 Vol% O2
Span: Relative deviation from reading at 20 °C
In the range: -10 °C to 55 °C: < ± 8% of measurement value
In the range: -10 °C to -20 °C: < ± 16% of measurement value
At temperatures below -5 °C the measurement deviation is
higher than specified in the EN 50104.
NOTICE
For operation-temperatures outside -5 °C to 40 °C a
calibration at operation temperature must be
performed.
Pressure
In the range 700-1300 hPa
Zero point: Deviation: < ±0.2 Vol% O2
Span: Relative deviation from reading at 1013 hPa: < 10% of
measurement value / 100 hPa
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