Impeller Turbine Mass Flow Meters

Impeller turbine type mass flow meter introduction

An impeller turbine mass flow meter uses two rotating elements in the fluid stream, a turbine and an impeller. Both have channels, or pathways, that the fluid can pass through. The impeller moves at a constant speed, being driven by synchronous motor. The motor moves the impeller through a magnetic coupling and imparts an angular velocity on the fluid as it flows through the meter. The downstream turbine removes all the angular momentum from the fluid and receives torque proportional to the angular momentum. The turbine is restrained by a spring that deflects through an angle that is proportional to the torques exerted on it by the fluid and giving a measure of mass flow.

The impeller, turbine-type mass flow meter uses two rotating elements in the fluid stream, an impeller and a turbine. Both elements contain channels through which the fluid flows.

The impeller is driven at a constant speed by a synchronous motor through a magnetic coupling and imparts an angular velocity to the fluid as it flows through the meter.

The turbine located downstream of the impeller removes all angular momentum from the fluid and thus receives a torque proportional to the angular momentum.

This turbine is restrained by a spring which deflects through an angle which is proportional to the torque exerted upon it by the fluid, thus giving a measure of mass flow.

Impeller turbine type mass flow meter features

• Low-cost version

• Temperature: up to +350°C

• Stainless steel

• Ceramic bearings resistant to wearing

• Suited for polluted liquids

• Compact design

• Convenient comfortable use