RFRA

Upward fluid flow generates lift S and buoyancy A to lift the float inside the tapered tube. Enlarged annular passage weakens the kinetic lift gradually. The float stays balanced at a certain height when S + A = float gravity G. Float height represents flow rate owing to the proportional relation between flow capacity and float lift height / flow area, hence float position is used for flow metering.

Adjustable-flow

Suitable for micro-flow measurement in chemical, petroleum, light industry, pharmaceutical, fertilizer, chemical fiber, food, dyestuff, papermaking, national defense and scientific research industries.