A printed copper-resistance thermometer for measurement of air temperature

Abstract

A low-cost printed copper-resistance thermometer for measuring air temperature has been developed. Without linearization, this thermometer provides a linear performance over a wide dynamic temperature range of 0 to 100°C with an accuracy of better than ±0.3°C. A stable signal conditioner based on drift-free d.c. amplifier is developed. In addition, this thermometer is free from the error due to lead resistances of the printed copper resistance probe. Test results are given to support the theory.