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MAN-MAXPRO
REV. B.0.
Gas/Vapor
Methanol
Methylamine
Methylethylketone
Methyl,t-butylether
n-Propanol
Octane
Pentane
Propane
Propan-2-ol (IPA)
Propylene
Propylene Oxide
Styrene
Tetrahydrofuran
Toluene
t-Butylalcohol
Xylene
Note: This section below should be disregarded if you have
The cross sensitivity data above contains the relative span for
a number of combustible gases. This information enables the
following cross sensitivity calculations:
(1)
Instrument reading in LEL
Example 1:
(2)
APPENDIX A - SPECIFICATIONS
chosen the "LEL GAS TYPE" in the supervisory mode).
Instrument reading in LEL when exposed to a specific
combustible gas included in the table:
LEL concentation of gas applied
=
--------------------------------------------------------------------------------------------------------------------------------------------------------------------
What will an instrument, calibrated to
methane, read when exposed to 10%
toluene?
Calculation:
The actual gas concentration applied to an instrument,
when an LEL reading is observed.
Relative Span
84
80
48
44
50
38
50
63
49
64
46
32
64
44
74
31
×
relative span of calibration gas
10 x 44
-------------------- - = 4.4%LEL toluene
100
81
relative span of gas applied
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