238 • Monitoring in Methane Elimination Mode
EAGLE 2 Operator’s Manual
7. Continue to press the DISPLAY button until the Measuring Mode screen appears.
When the instrument is reading in methane elimination, an ME appears in line with
the catalytic combustible channel reading.
8. Allow 2 minutes for the combustible sensor to stabilize.
9. Perform a demand zero. See “Performing a Demand Zero” on page 31 for
instructions.
10. Monitor for the target gas.
11. If you wish to monitor for any other gas while in methane elimination mode, a
conversion factor must be taken into consideration. With the EAGLE 2 calibrated to
hexane, use Table 34 below to determine the concentrations of other target gases.
Multiply the display reading by the factor in the appropriate column to determine the
actual reading for that gas. For example, if you are using the EAGLE 2 in methane
elimination mode to detect isobutane and the display reads 10% LEL, the actual
isobutane reading is 10% x 0.59 = 5.9% LEL isobutane.
Table 34: Methane Elimination Mode Conversion Factors (Hexane Calibration)
Target Gas
LEL Factor
PPM Factor
Target Gas
LEL Factor
PPM Factor
Acetone
0.58
1.32
Isobutane
0.59
0.97
Benzene
1.01
1.10
Isopropanol
0.85
1.55
Butyl Acrylate
*
1.52
Methane
No
response
No
response
Butyl Acetate
1.34
1.58
Methanol
0.58
3.16
2-Butyl Alcohol
0.84
1.30
Methyl Acetate
0.55
1.55
1-Butyl Alcohol
1.71
2.18
Methyl Acrylate
0.83
2.11
Cyclohexane
1.06
1.25
Methyl Ethyl
Keytone
1.04
1.32
Cumene
1.74
1.42
Methyl Isobutyl
Keytone
1.30
1.42
Ethylene
Dichloride
2.04
11.50
Mixed Xylenes
1.36
1.36
Ethyl Alcohol
0.57
1.71
Nonane
1.66
1.21
Ethyl Chloride
0.59
2.04
Pentane
0.54
0.74
Ethyl Acrylate
1.32
1.68
Propane
Low
response
Low
response
HEX 0%LEL ME
OXY 20.9vol%
H2S 0.0ppm
CO 0ppm
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