Glass Tube Rotameter

(Model : GR - 21)

Glass Tube Rotameter is a Variable Area Flow Meter. This rotameter consists of a tapered tube, typically made of glass, with a 'float' made of SS or PTFE. The differential pressure across the annulus area is constant.

The float moves through the tapered tube up and down with respect to fluid flow. The vertical position of the float as indicated by scale is the measure of the instantaneous flow rate.