When the motor is operating, due to various faults and problems caused by temperature, the temperature of the motor needs to be measured to check different parts of the motor, and the required measuring instruments are different, and the measurement of the high-voltage motor may be too high What are the common methods of temperature?

Embedded temperature measuring element method The embedded temperature measuring element method is referred to as the ETD method.MotorThe internal temperature measuring element (resistance thermometer, thermocouple, thermistor or semiconductor thermometer, etc.) in the enterprise is used as a temperature information sensor element, and the temperature sensor signal obtained can be transmitted to the external supporting instrument through various wires , So as to be able to display the temperature of the component under test with a temperature measurement method.The motor is an electromagnetic device that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction.Frequency conversion speed motorA general term for motors driven by frequency converters.In fact, the motor designed for the frequency converter is a special frequency conversion motor. The motor can achieve different speeds and torques under the drive of the frequency converter to adapt to the changes in the demand of the load.Explosion-proof motorsA type of motor that can be used in flammable and explosive plants, and it does not generate sparks during operation.Explosion-proof motors are mainly used in coal mines, oil and gas, petrochemical and chemical industries.In addition, it is also widely used in sectors such as textiles, metallurgy, city gas, transportation, grain and oil processing, papermaking, and medicine.The measured temperature is the local ambient temperature value of the measuring point.In the development process of actual situation detection, the measured temperature is not directly related to the location of the temperature measuring element. The manufacturers of each motor company should focus on the students’ different motor industry structures and continue to accumulate experience to determine by analyzing a large number of measurement results. Choose a suitable placement position to objectively reflect the thermal performance of the motor.Infrared temperature measurement method Infrared temperature measurement method is more suitable for the measurement of the temperature of the motor surface (such as the motor casing and the exposed internal management components of the motor industry (such as slip ring, commutator, etc.). The main equipment used is an infrared thermometer, In the actual need to use the teaching process, we may find that the temperature measured by the infrared thermometer is only for the local reaction temperature, and it has a direct economic relationship with the measured distance, angle, color of the parts, etc. The measured data only provides a kind of The culture does not know accurate qualitative index data. The thermometer method directly attaches the temperature measuring element of the thermometer to the measured element to obtain its temperature. The measured temperature is the temperature value of the local area of ​​the measuring point. The time thermometer used is mercury or alcohol Equivalent expansion thermometers, semiconductor thermometers, non-embedded thermocouples or resistance thermometers, etc. In the actual application test operation process, the use of mercury thermometers is relatively common.