
Optosense LLC
USER MANUAL
Design department
SMALL-SIZE EXPLOSIVE GAS MEASURING
SENSOR MIPEX-02-X-X-X.1 X (RX)
ESAT.413347.005 UM
Revision 3.0
January 19th, 2017
Page 41 of 46
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С
is component concentration, % vol.;
С(h)
is the lower explosive limit of component, % vol. (constant);
For methane
C(h) = 4.4%
vol.; for propane
C(h) = 1.7%
vol.
Table 14. CGMs used for CH
4
span calibration
CGM number
according to
text
Components
composition
Content of
methane, %
vol. (% LEL)
Permissible
deviation
limits, % vol.
Limits of
permissible
error of
qualification,
% vol.
A number as
listed in the
State Register
or in the
Standard
designation
1
N
2
0
–
–
ISO 2435-73
2
CH
4
, N
2
2.2 (50)
±0.25
±0.04
ГОСТ 3883-87
3
CH
4
, N
2
4.15 (94)
±0.25
±0.04
ГОСТ 3883-87
4
CH
4
, N
2
40
±2.5
±0.4
ГОСТ 3892-87
Table 15. CGMs used for C
3
H
8
span calibration
CGM number
according to
text
Components
composition
Content of
propane, %
vol. (% LEL)
Permissible
deviation
limits, % vol.
Limits of
permissible
error of
qualification,
% vol.
A number as
listed in the
State Register
or in the
Standard
designation
1
N
2
0
–
–
ISO 2435-73
2
C
3
H
8
, N
2
0.85 (50)
±0.05
±0.015
ГОСТ 5328-90
3
C
3
H
8
, N
2
1.6 (94)
±0.1
±0.05
EM 06.01.648
Table 16. CGMs used for CO
2
span calibration
CGM number
according to
text
Components
composition
Content of
carbon
dioxide, % vol.
Permissible
deviation
limits, % vol.
Limits of
permissible
error of
qualification,
% vol.
A number as
listed in the
State Register
or in the
Standard
designation
1
N
2
0
–
–
ГОСТ 9392-74
2
СO
2
, N
2
0.7
±0.1
±0.015
–
3
СO
2
, N
2
1.3
±0.1
±0.05
–