TM 10-6665-297-13&P
3-2.1
Calibrating a System with One Detector per CD800/832 Control Unit or Individual Detector of
CD802/832 Two-channel Control Unit (continued)
TABLE 3-1. Multiplying (K) Factors for Conversion of Propane Gas
% L. E. L. to % L. E. L. Readings for Other Gases *
Acetone
1.32
Hydrogen Sulfide
8.30
Acetylene
1.37
Isopropyl Alcohol
1.49
Acrylonitrile
0. 97
Methane
0.60
Benzene
1.50
Methyl Alcohol
1.06
Butadiene
1.45
Methyl Acrylate
1.86
Butane
1.04
Methyl Chloride
0.71
Butyl Acetate
2.29
Methyl Chloroform
3.5
Carbon Disulfide
8.32
Methyl Ethyl Ketone
1.74
Carbon Monoxide
0.77
o-Xylene
2.98
Cyclohexane
1.49
Pentane
1.34
Ethane
0.75
Perchloroethylene
26.3
Ethyl Acetate
1.63
Propylene
1.22
Ethyl Alcohol
1.10
Propylene Oxide
1.40
Ethylene
0.90
Styrene Monomer
3.95
Ethylene Oxide
1.09
Tetrahydrofuran
1.32
Ethyl Ether
1.30
Toluene
1.66
Heptane
1.90
Trichloroethylene
0.99
Hexane
1.72
Vinyl Acetate
1.44
Hydrogen
0.70
Vinyl Chloride
1.17
*Based on Lower Explosive Limit of Gases at normal room temperature. (L.E.L. decreases with
increases in temperature.)
7.
If using J-W Calibration Kit 0023-7260, close regulator valve on cylinder and remove sample cup
from detector. (Meter reading should return to zero. ) Disassemble sampling kit components and
replace in kit. Store sample gas cylinder in cool area when not in use. If using Professional
Calibration Kit 51-7070, follow kit instructions for shutdown.
NOTE: If detector cannot be calibrated by following the above procedures, refer to Section 4,
Chart 4-1E, Troubleshooting Procedures.
8.
After 24 hours of operation, confirm that meter reading indicates zero in absence of combustible gas.
If necessary, readjust reading to zero (as in step 4). Repeat readjustment, if necessary, after one
week.
3-2.2
CALIBRATING A SYSTEM WITH TWO DETECTORS PER CD800/830 CONTROL UNIT. The
following special tools are required to calibrate a paired detector system:
Portable Combustible Gas Indicator
2 J-W Gas Calibration Kits (0023-7260) or Professional Calibration Kits
(51-7070) (1 if fresh air is assured at both detectors)
1 or 2 Sample Cups (Figure 3-1)
23-9617
6/21/77
3-6
