kosketuslämpömittausanturien

Kosketuslämpömittari, often translated as contact thermometer, is a device used to measure temperature by direct physical contact with the object or substance being measured. Unlike non-contact thermometers, which measure infrared radiation, a contact thermometer relies on heat transfer between the object and its sensing element. This direct contact ensures that the thermometer's reading accurately reflects the temperature of the surface or material it touches.

The principle behind a contact thermometer is thermal equilibrium. When the thermometer is placed in contact with the object, heat flows between them until they reach the same temperature. The thermometer's internal sensor then detects this temperature and converts it into a readable value. Common types of contact thermometers include thermocouples, resistance thermometers (like RTDs and thermistors), and bimetallic strip thermometers. Each type utilizes different physical properties to measure temperature, but all require direct contact.

Contact thermometers are widely used in various applications due to their accuracy and reliability. They are essential in industrial processes for monitoring temperatures of machinery, pipelines, and chemical reactions. In laboratories, they are used for precise temperature measurements in experiments. They are also found in everyday devices such as ovens, refrigerators, and even some medical instruments for body temperature measurement. The choice of contact thermometer depends on the required temperature range, accuracy, response time, and the specific environment of use.