一、临界流喷嘴流量装置的流量范围对于用临界流喷嘴作为标准器的负压法流量标准装置,从节能(能耗)、环保(噪声)的角度讲,最适宜的最大流量应小于1000m3/h,大于1000m3/h最好用标准表(涡轮流量计、腰轮流量计等)的标准装置。同样流量范围的装置,临界流喷嘴装置因为喷嘴的背压比的关系能耗较高。 First, the critical flow nozzle flow device flow range For the use of the critical flow nozzle standard device of the negative pressure flow standard device, from the energy (energy), environmental (noise) point of view, the most appropriate maximum flow should be less than 1000m3 / h, greater than 1000m3 / h best standard table (turbine flowmeter, waist wheel flow meter, etc.) standard device. The same flow rate of the device, the critical flow nozzle device because of the nozzle back pressure ratio of the higher energy consumption.