Instrument of measuring rolling bearing temperature

1. Thermometer to point B as shown in figure 1, the thermometer is commonly used in direct measurement. The expansion of the thermometer is common used in the thermometer and semiconductor thermometer, commonly used point temperature meter as shown in figure 2. Some digital multimeter and clip-on table has the function of point temperature meter as shown in figure 3 shows three types. Touching part object difficult to use a little temperature, can be used as shown in figure 4 of the far infrared thermometer ( Infrared thermometer) 。 Measurement, the light should be vertical, and the measured surface as possible distance should be as short as possible. 2. Temperature sensor and display instrument internal embedment of prior to motor temperature measuring device ( Known as temperature sensor) Shall be by an external dedicated instrument for monitoring. 3. Thermocouple and its degree in thermocouple temperature changes, the both ends of electromotive force will change according to certain rule. Electromotive force produced by the relationship with the temperature change is called degree of thermocouple. T dividing copper-constantan and K dividing nickel chrome - nickel silicon thermocouple indexing table ( 0 ~ + 200 ℃, the cold end temperature 0 ℃) 。 4. Thermal resistance and the degree in thermal resistance temperature changes, the resistance to change, in a certain temperature range, the change is a linear relationship. The relationship between resistance and temperature change has been referred to as the heat resistance index. Used in metal materials, more frequently used with copper heat resistance and platinum thermal resistance of two kinds big.