Thermocouple in the process of installation need to pay attention to?

Basically need to pay attention to the following three points:

in production due to the different object, environmental conditions are different, different measurement requirements, and heat resistance of the installation method and measures is also different, need to consider the problems more, but can in principle from the accuracy of temperature measurement, safety, convenient maintenance from three aspects to consider.

1, in order to avoid damage of temperature measuring element, shall ensure that have enough mechanical strength, to protect the heat element is not subject to wear and tear should add protection screen or protection tube, etc.

2, in order to ensure safe and reliable, the installation of the temperature measuring element method should be according to specific situation ( Such as temperature, pressure, temperature of the medium under test components and the length of the installation location, forms, etc. ) And decide.

3, every installation of temperature measuring element under pressure, must ensure the sealing. Work under the high temperature of the thermocouple, in order to prevent the protection tube deformation at high temperature, the general should be installed vertically, if must be horizontal installation shoulds not be too long, and protect the thermocouple. If the temperature measuring components installed in the pipeline of medium velocity is bigger, it should be inclined to install. As to prevent the excessive erosion of temperature measuring element, is best installed on the pipe bend. When the medium pressure more than 10 mpa, it must be on the measuring element in protecting coat. Thermocouple/thermal resistance should also consider the tear open outfit, maintenance, calibration of enough space and space, has a long protection tube of thermocouples, thermal resistance should be able to easily tear open outfit.

and at the same time for everyone to introduce thermocouple installation you need to follow the principle of

1. Measurement end must be in to the part of the temperature measured medium, in order to avoid and heating distance too close.

2。 Insert depth must be long enough. According to different protection object, the depth of different requirements. Such as protecting tube metal and nonmetal protection tube has different requirements on the depth of insertion.

3。 User should note that the location of the thermocouple installation maintenance more convenient.

4。 Note, when installation should keep vertical state, in order to avoid deformation of protecting tube. If the horizontal installation, thermocouple in use will be affected by high temperature and downward bending.

5。 Avoid by all means, the installation site must try to stay away from magnetic fields, such as the electric field outside interference. Recommended dangling installation not only can avoid direct contact with the wall, but also can avoid the influence of the leakage current.

6. Electric installation, sealing of work to do, in order to avoid the intake of air from outside, affect the measurement result. If it is under pressure of galvanic couple, when installation, must be in strict accordance with the rules for installation instructions