A fuel flow transmitter requires a motor or a synchronous motor to have a
- constant voltage within small tolerances
- constant frequency within small tolerances
- low EMF as it is immersed in fuel
Explanation
A fuel flow transmitter that uses a synchronous (mass-flow) motor relies on the motor turning at a precisely fixed speed to provide the reference against which the impeller's drag is measured. Synchronous motor speed is set by supply frequency, so a constant frequency within tight tolerances is essential for accuracy; voltage is far less critical.
Mihir Somaia asking:
Can someone please explain.
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