Thermal resistance is a kind of temperature detector most commonly used in low temperature area. And for its installation, there are three suggestions about the installation place, connection and deviation.
First, we talk about installation place. Thermal resistance should be avoided to install besides the stove or the place too close to the heating body. And it should be installed in the place where there is no shock or just small vibration. At the same time, the place should ensure that the construction and maintenance is convenient. The installation position should as far as possible to maintain the vertical, but if there is a velocity flow, it has to be inclined installation. And the junction box hole should be downward.
Then, for the connection, thermal resistance should be in accordance with the provisions of the wiring. Generally, it uses the three-line system. The connecting wire should be insulation copper, whose cross-sectional area should be greater than or equal to a square millimeter, and its conductor resistance value should be in accordance with the provisions of the display instrument.
Last, we should know that thermal inertia can make the change of heat resistance lag behind that of temperature. In order to eliminate the error caused by it, we should reduce the protection tube of heat resistance as far as possible to, while appropriately increasing the insertion depth of the thermal resistance to increase its heated parts. In addition, we should also pay attention to regularly check the protection status of the thermal resistance.