论文信息 - Fast Multichannel Precision Thermometer

Fast Multichannel Precision Thermometer

This paper describes a fast multichannel precision thermometer working in a temperature range from -50degC to +40degC. Thermistors are used as temperature sensing elements. A detailed discussion of the choice of thermistor and design of the circuitry is given. It is shown that accuracy similar to that of calibrated platinum thermometers can be achieved by calibration of thermistors. During our tests, the accuracy of the thermometer was both mathematically and experimentally analyzed in detail. The stability of 30 thermistors after six months of laboratory use was analyzed. Deviations smaller than 30 mK in the range from -50degC to+10degC were observed.

[1] A. Sloman,et al. A microcontroller-based driver to stabilize the temperature of an optical stage to within 1 mK in the range , using a Peltier heat pump and a thermistor sensor , 1996 .

[2] D. White. A high resolution transformerless bridge , 1982 .

[3] Gerard C. M. Meijer. Thermal sensors based on transistors , 1986 .

[4] John S. Steinhart,et al. Calibration curves for thermistors , 1968 .

[5] P H Sydenham,et al. Thermistor controller with microkelvin stability (for strainmeter testbase temperature control) , 1975 .

[6] Anwar A. Khan,et al. Linearization of thermistor thermometer , 1985 .

[7] T. Quinn,et al. The international temperature scale of 1990 (ITS-90) , 1990 .

[8] J. Barthel. The Temperature Dependence of the Properties of Electrolyte Solutions. I. A Semi‐Phenomenological Approach to an Electrolyte Theory Including Short Range Forces , 1979 .

[9] W. R. Beakley,et al. The design of thermistor thermometers with linear calibration , 1951 .