... % , fast to measure.7. l Small pressure loss, only about 1/2P of Standard Hole Board.8. l Able to adopt hang ... .08% , fast to measure.7,Small pressure loss, only about 1/2P of Standard Hole Board.8,Able to adopt hang weight ... % Measuring range: gas 1:100,1:50,1:30,1:10 steam 1:30,1:20,1:10 liquid 1:200,1:100;1:50,1:30,1:10Minimum flow:gas:12L ...