GDA GTD 2000Ex, Руководство по эксплуатации

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Gas Detection (Australia) Pty Ltd
GTD 2000 Ex Operating Manual
Page 6 of 26
M-GTD2000Ex-01-01
EMC (electromagnetic compatibility) Comply with EN50270
3.5 Electrical
Supply voltage
18VDC/31VDC
Supply voltage ripple & noise max 1Vpp
Current consumption (typical /max) 150mA/250mA@24VDC
Analog output current range 0-22.0 mA
Gas concentration output current range 4-20 mA
Analog output current ripple & noise max 20uApp
Analog output termination resistance
(including total cable resistance)
< 600Ω
3.6 Cross sensitivity
Combustible gases Cross sensitivity (% relative to CH4)
Methane CH
4
100
iso-Butane
C
4
H
10
80
Hydrogen H
2
110
Acetylene C
2
H
2
100
Ethylene C
2
H
4
95
n-Pentan
C
5
H
12
70
Propane
C
3
H
8
75
n-Hexane C
6
H
14
65
n-Heptane C
7
H
16
55
IPA C
3
H
7
OH 60
Methanol CH
3
OH
90
Ethanol C
2
H
5
OH 70
Acetone (CH
3
)
2
CO
70
MEK C
2
H
5
COCH
3
70
n-Octane C
8
H
18
70
Ethyl acetate CH
3
CO
2
C
2
H
5
60
Buthyl acetate C
6
H
12
O
2
5
* Please inquire to GDA for other gases