ARM Based Design of Density and Viscosity Measuring Instrument For Petroleum

Real-time viscosity measurement remains a necessity for highly automated industry. The off-line viscosity measuring destroys the real time performance and the precision, and the change of temperature causes a biggish impact to the output. Density is one of the most universal and easily measurable qualitative characteristics of petroleum products. Knowledge of this quantity enables one not only optimize the operation of internal combustion engines but also to grade the petroleum products and take their mass into account. This paper proposed an improved method based on single chip, which realized the on-line signals gathering and the data processing of many kinds of signals, to measure the fluid viscosity. The configuration of the sensor was given, which was designed independently after many times tests and error analysis. The temperature measurement was carried out by temperature sensor and it’s signal conditioning circuits.