Pengukuran Temperatur Gas Menggunakan Gelombang Ultrasonik Berbasis Mikrokontroler ISP AT89S8252

Abstract

The gas temperature measurement system has been designed with ultrasonic wave. This method included in non destructive test because It’s used of secure wave spectrum region and nocontact measurement system. The system is very important for industrial progress. This research based on that ultrasonic wave velocity dependent on gas temperature. The Pulse wave velocity calculated by AT89S8252 as a pulses regulator and counter of time of flight since It’s start pulsed until received. The system used 16 bits counter in TL0 and TH0. The time of flight of pulses correlated with temperature by assembly program and displayed the result measurement. The result of instrument design characterized by number of timer/counter with digital oscilloscope D300/100MHz. It is used standard thermometer Schott Gerate type OX1100 Germany for result temperature calibration. From graphic of characterization result that temperature have parabolic equation. It’s used assembly program for give linear system by look-up table algorithm. The linear equation of instrument have Y = 1,02 X – 0,66 R= 0,996 where Y result variable and X is standard variable.