Resistance-type temperature sensors are presently the world-wide devices for temperature measurement. They are very used in all branches of industry, for example in the machinery, air-conditioning, heating industry, automotive industry, chemical industry, food-processing industry, etc. But there are many other possibilities of usage them. They are also used for example as measuring standards for calibration of other types of sensors or thermometers. The main advatages of them are stability, accuracy and good shape of signal.