Dräger X-am 2500 Gebrauchsanweisung Seite 28

Technical data
.
Excerpt: For details, see the Instructions for Use/data sheets for the sensors used
Measuring principle
Measuring value setting time
0...90
Measuring value setting time
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
Hydrogen sulphides, 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 affected negatively by ethane, ethene, ethine, carbon dioxide and hydrogen.
8) The measuring signals may be additively affected by sulphur dioxide, nitrogen dioxide and hydrogen, and negatively affected by chlorine.
9) The measuring signals can be affected additively by acetylene, hydrogen and nitrogen monoxide.
28
Ex
Catalytic oxidation
≤17 seconds
for methane
≤25 seconds
for propane
≤7 seconds
for methane
2
for nonane ≤40 seconds
3
0 to 100 %LEL
for methane
0 to 5 vol. %
– – –
– – –
35 seconds
≤1 %LEL/
8 hours
Possible poisoning
≤5 %LEL
6
EN 60079-29-1
EN 50271
1
XXS O XXS H
2
Electrochemical Electrochemical
≤10 seconds ≤18 seconds
≤6 seconds ≤6 seconds
0 to 25 vol. %
0 to 100 ppm H
– – – 0,4 ppm
≤1 % of the measuring
– – –
value/month
≤5 minutes ≤5 minutes
– – – – – –
≤0,3 vol. % ≤2 % of the measuring
value
7
EN 50104 EN 45544-1/-2
(measurement of EN 50271
oxygen deficiency and
oxygen surplus)
EN 50271
S-LC XXS CO
2
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
Dräger X-am 2500