How does a flowmeter pickoff coil work?

A flowmeter pickoff coil works by detecting the magnetic field generated by a flowing conductive fluid, typically in electromagnetic flowmeters. As the fluid moves through a magnetic field created by the flowmeter, it induces a voltage in the pickoff coil according to Faraday's law of electromagnetic induction. This induced voltage is proportional to the flow velocity of the fluid, allowing the flowmeter to calculate the flow rate. The signal from the pickoff coil is then processed and converted into a readable flow measurement.