GasSecure GS01
Hardware Manual
36
C
HAPTER
8
8.2
Cross sensitivities
The GS01 is sensitive to many hydrocarbon gases, and does not distinguish one
from another. In the tables below cross sensitivities to important hydrocarbon
gases are presented. Please note that these are modelled estimates and shall be
used as an indication only. Please contact GasSecure for cross sensitivity
estimates for other gases than those listed below.
The tables are read as follows: The instrument reading is looked up in the first
column. The estimated actual concentration is found in the same row in the
column for the gas to be measured.
Example from Table 8-3: If a methane detector is exposed to ethanol and a value
of 40 %LEL is read, the actual concentration of ethanol is approximately 15 %LEL.
8.2.1
GS01 detector with LEL according to IEC
All values are in % LEL. LEL values as provided in Table 8-2.
Table 8-2: LEL values in [% vol] according to IEC60079-20.
Methane
Propane
Methanol
Ethanol
Ethylene
N-butane
Hexane
Styrene
Benzene
4.4
1.7
6.0
3.1
2.3
1.4
1.0
1.0
1.2
Table 8-3: Cross sensitivities for a GS01 Methane detector.
Reading
Propane
Methanol
Ethanol
Ethylene
N-butane
Hexane
Styrene
Benzene
10
5
4
6
34
6
7
16
28
20
9
7
10
54
10
11
25
46
30
11
8
12
69
12
14
32
59
40
14
10
15
81
15
17
38
71
50
15
11
17
91
17
19
43
81
75
19
14
21
113
21
24
53
103
100
23
16
24
131
25
28
61
122
Table 8-4: Cross sensitivities for a GS01 Propane detector.
Reading
Methane
Methanol
Ethanol
Ethylene
N-butane
Hexane
Styrene
Benzene
10
24
7
11
61
11
12
28
52
20
79
14
21
116
22
25
54
106
30
159
21
31
167
33
38
77
164
40
200
27
40
>200
44
52
98
>200
50
>200
32
49
>200
55
67
117
>200
75
>200
43
69
>200
83
111
155
>200
100
>200
52
86
>200
113
167
184
>200
8.2.2
GS01 detector with LEL according to NIOSH
All values are in % LEL. LEL values as provided in Table 8-5.
Table 8-5: LEL values in [% vol] according to NIOSH.
Methane
Propane
Methanol
Ethanol
Ethylene
N-butane
Hexane
Styrene
Benzene
5.0
2.1
6.0
3.3
2.7
1.6
1.1
0.9
1.2
