Measurement System of Reducing Temperature Fluctuation of Thermostat Bath for Calibrating Thermocouple

Abstract

Based on the periodic unsteady state heat conduction theory, a new measurement system of reducing temperature fluctuation of thermostat bath was developed in order to obtain a liquid environment with uniform and constant temperature controlled for the measurement requirements of calibrating thermocouple. The experimental results show that the temperature stability in this measurement system is superior to that in traditional system. The measurement system had the advantage of calibrating multipoint thermocouple at the same time and completing the data acquisition and control automatically.

Comparative Analysis of Water and Oil Media on Temperature Stability in PID Control-Based Digital Thermometer Calibrator

“…Min Zhang designed a measuring system to reduce temperature fluctuations in the thermostat for calibration thermocouples by periodically applying the theory of heat conduction.The purpose of this research is to obtain a liquid environment and obtain a controlled constant temperature for thermocouple calibration measurements. The experimental results show that the temperature stability in this measurement system is superior to the traditional multipoint thermocouple system, which can be calibrated simultaneously and data acquisition and control is carried out automatically, the weakness of this study is that the instrument is only used for thermocouple calibration and has not been developed for thermometer calibration [14]. Leobardo Hernández González explains Thermometer calibration can be carried out by inserting the thermometer into a fixed point cell filled with highly pure material and entering the phase transition temperature [15].…”