Dräger X-am 5000 Notice D'utilisation page 19

Measuring principle
Measurement value configuration time t
for methane
for propane
Measurement value configuration time t
for methane
for nonane
Measuring range
for methane
Zero error (EN 45544)
Device drift
Warm-up time
Effect of sensor poisons
Hydrogen sulphide H S, 10 ppm
2
halogenated hydrocarbons, heavy metals, gases
containing silicone, sulphur or polymerizable substances
Measuring accuracy [% of the measured value]
Standards
(Measuring function for explosion protection and
measurement of oxygen deficiency and surplus as well as
toxic gases,
EXAM, Essen, Germany:
3)
BVS 08 ATEX G 002 , PFG 08 G 001
1) The Technical Handbook and Instructions for Use/data sheets for the sensors used and the PC software CC-Vision for Dräger X-am 5000 are available on CD. See also attached Instructions for Use
and Data Sheets of the sensors used.The Instructions for Use/data sheets for the sensors used can also be downloaded at the following Internet address: www.draeger.com
2) For falling concentrations, the settling time for nonane is 50 seconds.
3) Alkanes from methane to nonane, LEL values according to EN 60079-20-1. At flow speeds of 0 to 6 m/s, the indication may deviate by 5 to 10% of the measured value. When adjusting to propane, the
deviation of the indication in air in the range 80 to 120 kPa can be up to 6 %LEL.
4) Certified for 1 to 100 ppm
5) Certified for 3 to 500 ppm
6) The device responds to most combustible gases and vapors.The sensitivities differ depending on the type of gas. We recommend a calibration using the target gas to be measured. For the range of
alkanes, the sensitivity decreases from methane to nonane.
7) The measuring signals can be affected additively by sulphur dioxide and nitrogen dioxide and negatively by chlorine.
8) The measuring signals can be affected additively by acetylene, hydrogen and nitrate monoxide.
Extract: For details, see the Instructions for Use/data sheets for the sensors used
Ex
Catalytic combustion
0...90
≤17 seconds
≤25 seconds
0...50
≤7 seconds
≤40 seconds
0 to 100 %LEL
0 to 100 vol. %
– – –
– – –
35 seconds
≤1 %LEL/
8 hours
Poisoning possible
≤5
EN 60079-29-1
EN 50271
O
2
Electrochemical
≤10 seconds
≤6 seconds
2)
3)
0 to 25 vol. %
– – –
– – –
≤5 minutes
– – –
≤1
6)
EN 50104
(measurement of
oxygen deficiency and
oxygen surplus)
EN 50271
1)
.
H S CO
2
Electrochemical Electrochemical
≤15 seconds ≤25 seconds
≤6 seconds ≤6 seconds
0 to 200 ppm 0 to 2000 ppm CO
4)
H S
2
2 ppm 6 ppm
≤1 % of measured ≤1 % of measured
value/month value/month
≤5 minutes ≤5 minutes
– – – – – –
≤2 ≤2
7)
EN 45544-1/-2 EN 45544-1/-2
EN 50271 EN 50271
5)
8)
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