Dräger X-am 2500 Instrucciones De Uso página 31

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Excerpt For details see the instructions for Use/datasheets of the sensors used
Measuring principle
Measuring value response time t
0...90
Measuring value response time t
0..0.50
Measuring range
Zero point deviations (DIN EN 45544)
Instrument drift
Warm-up time
Effect of sensor poisons
Hydrogen sulphide H S, 10 ppm
2
hydrocarbons, heavy metals, silicone-, sulphur- and
polymerization-capable materials
Linearity error
Standards
((Measuring function for explosion protection and
measurement of oxygen deficiency and surplus as well
as toxic gases, DEKRA EXAM, Essen, Germany:
3)
BVS 10 ATEX E 080X , PFG 10 G 001X
1) The Technical Handbook and Instructions for Use/data sheets for the utilized sensors and the PC software CC-Vision for Dräger X-am 2500 can be downloaded on the product page of the
X-am 2500 at the following Internet address: www.draeger.com
2) For decreasing concentrations, the adjustment time for nonane is about 50 seconds.
3) For alkanes from methane to nonane, LEL-values in accordance with EN 60079-20-1. For flow speeds of 0 to 6 m/s the deviation of the display can be 5 – 10 % of the measuring value.
For an adjustment to propane, the deviation of the display in the range of 80 to 120 kPa can be up to 6 %LEL.
4) Certified for 0.4 to 100 ppm
5) Certified for 3 to 500 ppm
6) The instrument responds to most combustible gases and vapours. 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 negatively affected ethane, ethene, ethine, carbon dioxide and hydrogen. No O2 measurement in helium.
8) The measuring signals can be affected additively by sulphur dioxide and nitrogen dioxide and hydrogen and negatively by chlorine.
9) The measuring signals can be affected additively by acetylene, hydrogen and nitrogen monoxide.
Dräger X-am 2500
Ex
Catalytic oxidation Electrochemical
10 seconds
17 seconds for methane
25 seconds for propane
6 seconds
7 seconds for methane
2
40 seconds for nonane
3 0 to 25 vol. %
0 to 100 %LEL
0 to 5 vol. % for methane
– – –
– – –
35 seconds
1 %LEL/
8 hours
Possible poisoning
5 %LEL 0.3 vol. %
6
EN 60079-29-1 EN 50104
EN 50271 (measurement of
oxygen deficiency and
oxygen surplus)
1
XXS O XXS H S-LC
2 2
Electrochemical
18 seconds
6 seconds
0 to 100 ppm H
– – – 0,4 ppm
1 % of the measuring
– – –
value/month
5 minutes 5 minutes
– – – – – –
2 % of the measuring
value
7
EN 45544-1/-2
EN 50271
EN 50271
Technical data
XXS CO
Electrochemical
25 seconds
6 seconds
4 5
S 0 to 2000 ppm CO
2
6 ppm
1 % of the measuring
value/month
5 minutes
– – –
3 % of the measuring
value
8 9
EN 45544-1/-2
EN 50271
31