Fuel Display Unit Tester
Fuel Display Unit Test Bench is a compact table-top test bench with front panel controls, indications, built-in signal simulator and necessary power supply for testing the serviceability of Fuel Display Unit of Helicopter. FTB operates on 230 V AC and supplies 28 V DC power to FDU. FTB is housed in a metallic cabinet FTB interfaces with both 61 Pin connector and 6-pin socket mounted on the rear panel of FDU by means of the cable connected to the unit. FTB is fabricated utilizing off-the-shelf standard industrial/commercial components like rotary switches, toggle switches, press switches, test sockets, fuse holders, potentiometer etc. The Frequency generation circuit is integrated into FTB for the simulation of Fuel probe and flow rate signals. The frequency of the signal can be selected by means of a rotary switch Low amplitude sine wave signal is simulated for testing flow rates. Variable voltage DC power supply with a voltage range of 24 to 29 Volts is provided within FTB to power-up FDU. 5 V DC is provided for the operation of signal generating circuit (PIC Frequency Controller Board). An off-the-shelf Hand held battery operated Digital Multimeter (DMM) procured from the prominent manufacturer (FLUKE) is supplied with FTB for setting up and measurement of various parameters like Resistance, Voltage, Frequency etc.