The results showed that cap-manometer can avoid the errors caused by liquid fluctuation and turbulence at a low gas velocity, and prevent an additional thrust head at a high gas velocity.

• 结果表明；这种挡流帽式测压元件在浮阀塔板清液高度测量中；可以消除在低气速时塔板上的液面波动和高气速时气体对测压孔的冲击压头而引起的测量误差.