This article, based on JJG 693-2011 Verification Regulation of Combustible Gas Detection Alarms, is to design the measurement comparison scheme, measuring the same blind sample of combustible gas detection alarm by measurement standards from different laboratories, make statistic analysis of experimental data by Z value, and obtain the comparison results, which provides an effective guarantee for the accuracy of combustible gas detection alarms and the traceable transmitting of measuring instruments in the future.
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