Design of gas turbine flowmeter based on the technology of automatic gain control

The paper proposes a gas turbine flowmeter with adding the technology of automatic gain control (AGC). This design is using MSP430F169 chip. The main function modules and test results of this are given in the paper. This design can solve the disadvantage of signal degradation caused by the external environmental factors when using the gas turbine flowmeter in practical application. This gas turbine flowmeter has advantages of good precision, high rangeability, little environment influence, good stability and excellent reliability. The output signal can be adjusted according to the strength of the received signal so that it in certain dynamic range is realistic. The experimental results show that the quality of the output signal is improved by applying the technology of automatic gain control to the gas turbine flowmter in practical use.