Fluid moving through the turbine flow meter causes the rotor to rotate in relation to the flow rate. The rotation of the rotor blades cuts through the magnetic field generated by the magnetic pick-up which in turn generates a frequency output signal that is directly proportional to the speed of the rotor.

The signal produced is received by the Dual Scaler Circuit Card's input amplifier, which has an adjustable input sensitivity. The signal is then sent to a divisor with a range of 1 through 1023 to produce one pulse per gallon output to a CPU, RTU or other totaling device.