Common Turbine Instruments
Terms in this set (11)
Indicated in PSI, the most important instrument used by the pilot to perceive the health of an engine.
Exhaust Gas Temperature (EGT)
The temperature of the gases as they leave the cylinder of a reciprocating engine or the turbine of a gas turbine engine.
Turbine Inlet Temperature (TIT)
The temperature of the gases from the combustion section of a gas turbine engine as they enter the turbine inlet guide vanes or the first stage of the turbine.
Turbine Gas Temperature (TGT)
Provides a visual temperature indication in the cockpit of the turbine exhaust gases as they leave the turbine unit.
Engine Pressure Ratio (EPR)
The ratio of the turbine discharge total pressure to the compressor inlet total pressure. EPR is normally used as the parameter to determine the amount of thrust an axial-flow turbojet or turbofan engine is producing.
Indicates the amount of fuel in the tanks.
Calibrated in PSI, it is used during the test run-in to measure engine fuel pressure at the carburetor inlet, the fuel feed valve discharge nozzle, and the main fuel supply line.
Measures the amount of fuel delivered to the engine.
Tachometer (percent calibrated)
An instrument that measures the rotational speed of an object.
N1 and N2 compressor speeds
Measures the speeds of the N1 and N2 compressors.
Torquemeter (on turboprop and turboshaft engines)
Indicates the amount of torque being produced at the propeller shaft.