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Re: Minimum Ignition Energy (mJ) of gases
Posted by: John Lentini (IP Logged)
Date: December 31, 2017 05:13PM
Measurement uncertainty is discussed right up front in NFPA 921.
1.5 Measurement Uncertainty. The reproducibility of measurements
reported in this guide may be very high, such as
density measurements of pure substances, or more variable,
such as gas temperatures, heat release rates, or event times in
test fires. Therefore, all reported measurements, or factors in
equations should be evaluated to assess whether the level of
precision expressed is appropriate or broadly applicable.
1.5 Measurement Uncertainty. The reproducibility of measurements
reported in this guide may be very high, such as
density measurements of pure substances, or more variable,
such as gas temperatures, heat release rates, or event times in
test fires. Therefore, all reported measurements, or factors in
equations should be evaluated to assess whether the level of
precision expressed is appropriate or broadly applicable.
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