Mass flow measurement with turbine-type flowmeters¿an electronic method of density correction

The temperature of the fuel delivered to an aircraft engine is measured by a silicon resistor, and the volume flow rate is measured by a turbine-type flowmeter fitted with a saturable magnetic pick-off. Electronic circuits convert the transmitted pulse rate and temperature signal into a direct current and into a slightly different pulse rate, both representing the mass rate of flow of fuel. The current operates a rate-meter, and the pulses drive a counter which displays the total mass of fuel consumed. The principles could be applied to industrial mass flow measurement.