FUEL FLOW METER FOR CIVIL GAS TURBINE AERO ENGINE. THIS INSTRUMENT PROVIDES AN ACCURATE MEASUREMENT OF THE MASS FLOW RATE OF LIQUID FUEL TO THE GAS TURBINE ENGINE FUEL MANIFOLD. THE MASS OF FUEL PASSING THROUGH A ROTATING IMPELLER CAUSES A DEFLECTION IN THE IMPELLER THAT, WITH THE USE OF MAGNETS, CREATES ELECTRICAL PULSES. THE TIME BETWEEN PULSES IS DIRECTLY PROPORTIONAL TO THE MASS FLOW RATE OF THE FUEL. THE SIGNAL FROM THE FUEL FLOW METER IS THEN SUPPLIED TO THE ENGINE ELECTRONIC CONTROLLER WHICH PROCESSES THE OUTPUT WAVEFORMS AND TRANSMITS THE REQUIRED INFORMATION TO AN ENGINE INDICATION DISPLAY AS PART OF THE CREW ALERTING SYSTEM.

CLASSIFICATION HAS BEEN DETERMINED IN ACCORDANCE WITH THE FOLLOWING:- GENERAL INTERPRETATIVE RULES (GIR)S GIR 1 HAS BEEN USED TO CLASSIFY THIS PRODUCT BY THE TERMS OF HEADING 9026 - INSTRUMENTS AND APPARATUS FOR MEASURING OR CHECKING THE FLOW, LEVEL, PRESSURE OR OTHER VARIABLES OF LIQUIDS OR GASES (FOR EXAMPLE, FLOW METERS, LEVEL GAUGES, MANOMETERS, HEAT METERS), EXCLUDING INSTRUMENTS AND APPARATUS OF HEADING 9014, 9015, 9028 OR 9032 GIR 6 HAS BEEN USED TO CLASSIFY THE GOODS TO SUBHEADING LEVEL 9026 10 - FOR MEASURING OR CHECKING THE FLOW OR LEVEL OF LIQUIDS CN CODE 902610 21 - ELECTRONIC FLOW METERS SECTION XVI NOTE (M) AND (III) ACCESSORY APPARATUS EXCLUDES FROM CHAPTER 84 ALSO CLASSIFIED IN ACCORDANCE WITH:- ADDITIONAL NOTE 1 TO CHAPTER 90 HARMONIZED SYSTEM EXPLANATORY NOTES (HSEN) TO HEADING 90.26 (I) APPARATUS FOR MEASURING OR CHECKING (A) FLOWMETERS