TM 10-6665-297-13&P
*Based on Lower Explosive Limit of gases
at normal room temperature (L E L
decreases with increases in temperature.)
(On selected gas curve, find point over horizontal scale representing known % L.E.L
concentration of propane gas sample. Read vertical scale at left of determined point to find %
L.E.L. equivalent for actual gas to be monitored.)
Note: Series 800 detector sensor elements with different model numbers differ in response to some
combustible gases and vapors. Consult Table 5-1 to determine the gases and vapors to which a given
sensor element may be expected to respond.
Figure 3-2. Calibration Percent L. E. L. Equivalents for Gases Other Than Propane, with
Propane Used as Calibrating Gas
23-9617
6/21/77
3-5
