用叶轮式流量计测量气体微小流量

The Low Gas Flowrate Detection by Vane Type Flowmeter

以侧向冲击式叶轮流量计为例,分析了在小流量情况下,由于层流状态造成仪表常数不稳定的原因,并从理论上和结构上提出了改善措施。

With the example of the side-shocked type vane flowmeter the unstability factors of the instrument caused by laminated flow under low flowrate are analyzed. Based on the con- struction and theory some mthods for impro- ving it are stated.