The Design of the Sonic Nozzle Gas Flow Standard Device of the Negative Pressure Method with the Integration of Error Detection and Sealing Test
Based on the principle of critical flow nozzle,a gas flow standard device with negative pressure method is developed,which can be used for error detection and sealing test.The device can meet the measurement error and seal performance of gas flowmeter,and realize the accurate and efficient verification of flow measurement instrument in the fields of trade settlement,industrial metering,process control,safety production and so on.
NETL
NSTL
万方数据
维普
