Dräger Pac 7000 Notice D'utilisation page 6

12.3 Sensor Specifications and Instrument Configuration
Principle of measurement is an electrochemical 3-electrode sensor. Oxygen (O
of Helium (He)!
The Type-Examination-Certificate covers the measuring function for Oxygen enrichtment and defficiency.
Measuring Range
Certified range
test gas concentration
factory set calibration concentration
Temperature range, operation
2)
Alarm Threshold A1
acknowledgeable
latching
2)
Alarm Threshold A2
acknowledgeable
latching
2)
TWA Threshold A1
2)
STEL Threshold A2
No. of STEL periods
Average STEL duration
Warm up time (switch on)
Warm up time (sensor or battery change)
Reproducibility
Zero point:
Sensitivity: [% of measured value]
o
Drift (20 C)
Zero point:
Sensitivity: [% of meas. value/month]
Response times t /t
0...50 0...90
Zero error (EN45544)
Standards, performance tests for toxic gases and
oxygen deficiency and enrichment Type
Certificate PFG 07 G 003
3)
Sensor Order Number
Sensor Data Sheet Order Number
1) For O A1 is the lower alarm threshold, used to indicate Oxygen
2
deficiency.
2) Please be aware of special settings by customer requirements.
3) Please be aware of limited lifetime of sensors. Excessive storage
reduces operating time of sensors.
o
Temperature range of storage is 0 ... 35 C (32 ... 95
6
) cannot be measured in the presence
2
CO
0 ... 1999 ppm 0 ... 200 ppm
3 to 500 ppm 1 to 100 ppm
20 to 999ppm 5 to 90ppm
100 ppm
o
–20 ... 50 C –20 ... 50
o
–4 ... 122 F –4 ... 122
30 ppm
Yes
No
60 ppm
No
Yes
30 ppm
60 ppm
4
15 minutes 15 minutes
20 seconds 20 seconds
15 minutes 15 minutes
 ± 2 ppm  ± 0.5 ppm
 ± 2
 ± 2 ppm/a  ± 1 ppm/a
 ± 1
7/11 seconds 7/13 seconds
6 ppm
EN 45544 EN 45544
EN 50271 EN 50271
6810882 6810883
9023816 9023819
o
F)
H S O
2 2
2 ... 25 vol.-%
2 to 25 vol. %
10 to 25 vol.%
20 ppm 18 vol.%
o o
C –20 ... 50 C
o o
F –4 ... 122 F
1)
5 ppm 19 vol.-%
Yes No
No Yes
10 ppm 23 vol.-%
No No
Yes Yes
10 ppm No
10 ppm No
4 No
No
20 seconds
15 minutes
 ± 0.2 vol.-%
 ± 2  ± 1
 ± 0.5 vol.-%/a
 ± 1  ± 1
12/20 seconds
2 ppm – – –
EN 50104
EN 50271
6810881
9023820
Cross sensitivity CO
4)
factors
 2
Acetylene
Ammonia negligible negligible negligible
Carbon dioxide negligible negligible
Carbon monoxide
 0.05
Clorine
Ethane no value
Ethanol negligible negligible negligible
Ethene no value
 0.35
Hydrogen
Hydrogen chloride negligible negligible negligible
Hydrogen cyanide negligible negligible negligible
 0.03
Hydrogen sulphide
Methane negligible negligible negligible
 0.05
Nitrogen dioxide
 0.2
Nitrogen monoxide
Propane negligible negligible negligible
 0.04
Sulphur dioxide
4) Multiply cross sensitivity factor by gas concentration to get reading.
H S O
2 2
 –0.5
negligible
 –0.04
 0.2
negligible
 –0.2
negligible
 –0.2
no value
 –1
no value
 –1.5
negligible
negligible
 –0.25
negligible
 0.03
negligible
 0.1
negligible