ENMET EX-2000 - Manual (Page 14)

ENMET Corporation EX2000
10
To calibrate an EX-2000 with a gas other than the programmed/labeled gas refer to the coefficient table below.
We recommend using 50% LEL levels of gases. Other levels are acceptable.
Example: Ethyl Acetate recommended calibration gas is Butane and its coefficient factor is 0.9
50%LEL multiplied by the coefficient of the programmed gas 0.9 equals 45.
Apply the 50%LEL Butane to the instrument and adjust the reading on the display to read 45. Calibration is complete.
Table 1: Coefficients of Gases Detected
Gas
Empirical
Formula
%LEL
Recommended
Cal. gas / Coefficient
Ethyte acetate C4H8O2 2.1 % Butane 0.9
Acetone C3H6O 2.15 % H2 2.6
Acetylene C2H2 1.5 % H2 1.8
Ammonia NH3 15.0 % H2 0.85
Benzene C6H6 1,2 % Butane 1.5
1, 3-Butadiene C4H6 1.4 % H2 2.1
Butane C4H10 1.5 % Butane 1.0
2–Butanone (MEK) C4H8O 1.8 % Butane 1.2
Dimethylether C2H6O 3.0 % Butane 1.0
Unleaded gasoline Mixture 1.1 % Butane 1.6
Gasoline Mixture 1.3 % Butane 1.4
Ethane C2H6 3.0 % CH4 1.1
Ethanol C2H6O 3.3 % H2 1.95
Ethylene C2H4 2.7 % H2 1.7
Diesel oil Mixture 0.6 % Butane 3.25
Natural gas CH4 5.0 % CH4 1.05
L.P.G. Prop+But 1.65 % Butane 1.35
Heptane C7H16 1.1 % Butane 1.95
Hexane C6H14 1.2 % Butane 1.15
Hydrogen H2 4.0 % H2 1.0
Isobutane C4H10 1.5 % Butane 1.05
Isopropanol C3H8O 2.15 % Butane 1.05
Kerosene (JP4) C10 - C16 0.7 % Butane 4.85
Methane CH4 5.0 % CH4 1.0
Octane C8H18 1.0 % Butane 2.25
Ethylene oxide C2H4O 2.6 % Butane 1.35
Propylene oxide C3H6O 2.3 % Butane 1.3
Pentane C5H12 1.4 % Butane 1.05
Propane C3H8 2.0 % Propane 1.3
Propylene C3H6 2.0 % Butane 0.8
Styrene C8H12 1.1 % Butane 1.6
Toluene C7H8 1.2 % Butane 1.35
White Spirit Mixture 1.1 % Butane 3.25
Xylene C8H10 1.0 % Butane 1.6