The choice of integrated temperature sensor protection tube
Integrated temperature sensor is currently using a more temperature sensor, this sensor is often a protective tube, so we must pay attention to the use of protective tube installation and selection, or will lead to measurement is not accurate or even damage Temperature Sensor.
Integral temperature sensor use process often have some problems, especially the temperature sensor protection tube, the temperature sensor protection tube is used to protect the resistance inside, but the temperature sensor cover is also likely to cause negative effects.
At the time of installation, the integration of the temperature sensor insulation error and the introduction of the error, such as thermocouple insulation, protective tube and cable plate dirt or too much salt residue caused by thermocouple between the furnace and the insulation between the bad, more serious at high temperatures , Which not only causes the loss of thermoelectric potential but also introduces interference, and the resulting error is sometimes up to. Due to the thermal inertia of the thermocouple, the indication value of the thermometer is lagging behind the measured temperature. This effect is particularly prominent in the case of rapid measurement. Therefore, it is necessary to use a thermocouple with a smaller thermal electrode and a smaller diameter of the protective tube.
When the temperature measurement environment permits, or even take the protective tube. Integral temperature sensor in use, usually with good thermal conductivity of the material, thin wall, small diameter protective sleeve, in the more accurate temperature measurement, the use of unprotected casing of the bare wire thermocouple, but the thermocouple easy Damage, should be promptly corrected and replaced.
