FLUIDIC TYPE GAS METER

摘要

PROBLEM TO BE SOLVED: To exactly mount a connecting rod approximately vertically on the bottom of a tube of a valve element in a pressure variation eliminating means. SOLUTION: A gas passage of a gas meter body comprises means 37 for eliminating the pressure variation and a fluidic flow meter in this order along the flow of a gas. One end 112 of a connecting rod 70 is swingably mounted in a valve element 42 settable on a valve seat 82, the other end is connected to a diaphragm 43 which approaches the valve element 42 to the valve seat 82 as the difference between the pressure at the upstream of the valve hole 41 and the pressure at a gas exhaust hole decreases. One end 112 of the connecting rod 70 is inserted and mounted in an insert hole 141 of a mounting tube 142 having a bell-jar-like outer diameter formed on the bottom 133 of the tube. The insert hole 141 has a selected length L2 of 9-15 mm.