A new type of vehicle fuel tank weighing instrument is researched and fabricated. The weight of the fuel tank is sensed by the weighing sensor and output the electrical signal proportional to the weight. After A/D conversion
it is sent to CPU through the 485 serial port for data processing. The measuring error caused by fuel tank tilt is compensated operation by tilt angle sensor
and the final result is displayed on the digital tube
which improves the accuracy of measurement result. The application results show that the metering precision of fuel tank weighing instrument is less than 0. 1 % FS