Strain Type Gas Flow Meter

Abstract

This paper gives a flow meter which indicates instantaneous value of welding gas flow at constant pressure. The flow meter consists of a strain meter and a pickup whose leg is fixed with resistance strain gauges. The trial flow meter is suitable for measuring gas flow of more than 10³l/h, but gas flow of 10²l/h can also be measured with a modified pickup.
Calibration of quantity of gas flow is also done with an apparatus, consisting of a small calibration tank and a cycle counter. Using the above meter and apparatus we could obtain the relation-ship between gas velocity and tip diameter at the blow out of oxyacetylene neutral flame.