The fuel flow indication data sent from moto driven impeller and turbine and motorless type fuel flow transmitters measures which parameter?

The fuel flow indication data sent from moto driven impeller and turbine and motorless type fuel flow transmitters measures which parameter?

• A. Fuel mass flow
• B. Fuel volume flow
• C. Engine burner pressure drop
• D. Fuel temperature

Answer: (A)

Fuel flow indicators from those transmitters are designed to show how much fuel is moving by mass per unit time. The sensing element (impeller or turbine) responds to the rate of fuel flow, and the transmitter converts that into a signal calibrated to mass flow, typically shown as pounds per hour (or kilograms per hour). This mass-based reading is used because it stays consistent despite changes in fuel density with temperature, ensuring accurate engine metering. This isn’t a measure of engine burner pressure drop, fuel temperature, or volume flow. Pressure drop and temperature are separate parameters, and volume flow would be a volumetric measure, whereas the system is calibrated to mass flow for reliable engine control.

Fuel flow indicators from those transmitters are designed to show how much fuel is moving by mass per unit time. The sensing element (impeller or turbine) responds to the rate of fuel flow, and the transmitter converts that into a signal calibrated to mass flow, typically shown as pounds per hour (or kilograms per hour). This mass-based reading is used because it stays consistent despite changes in fuel density with temperature, ensuring accurate engine metering.

This isn’t a measure of engine burner pressure drop, fuel temperature, or volume flow. Pressure drop and temperature are separate parameters, and volume flow would be a volumetric measure, whereas the system is calibrated to mass flow for reliable engine control.