Research on the Fast Verification Technology of Diaphragm Gas Meter Indication Error

Based on the current situation where natural gas has become more and more popular, this study combines internal structure and working principle of diaphragm gas meter, and studies a rapid error-calibrating technology for diaphragm gas meter with sonic nozzle based on rotary equivalent volume. On the basis of existing standard apparatus, an overall automatic verification system of auto-detecting control system is designed. The automatic verification system shortens detecting time at the lowest-capacity point and improves efficiency of verification.