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