Gasoline’s Complex Permittivity and Adulteration Measuring Prototype Instrument

Authors

Anagha kunte, Savita Kulkarni, Komal Garde

Abstract

The basic aim of this project is to detect the adulteration of ethanol in gasoline, a non-destructive method proposed for effective permittivity measurement. The parameters such as resonant frequency, bandwidth, Q & Loss will be transferred from network analyzer to computer using GPIBUSB- B interface. LabVIEW 8.5 software enables us to make front-end of instrument prototype. S-Parameters are used for high-frequency modeling. For mathematical modeling i.e. in proposed project regression analysis is used Proposed system requirement is to set various equations and give results online. LabVIEW is used for data acquisition of loss in dB and frequency, complex permittivity instrument control, and automation online. A Microstip straight resonator is sensor through which data is passed via network analyzer to LabVIEW. VI does permittivity analysis and measurement. It is proved that petrol and ethanol are lossy dielectric liquids. A microwave resonator sensor for adulteration monitoring in petrol has been designed, fabricated and tested. The adulteration content is evaluated by measuring the resonant frequency by means VNA 8714ET capable of producing 1600 frequency samples in less than 1 sec. Accuracy better than 0.5% has been demonstrated by this VI and fully functional measurement system can be made by use of LabVIEW instrument drivers.