Description
Discussion on some key problems of the joint of WSS-581 Φ150mm Dial Diameter Universal Installation Bimetal thermometer
Thermal resistance and bimetal thermometers have been widely used in a variety of industries, occupying a critical position in the production process, but for the installation of their connectors, we should pay attention to some key issues.
To be installed on the straight pipe section, let the end of the jacket of the thermal resistance and the bimetal thermometer be at the core of the pipeline. It is best to use the Lanlian Department.
The junction of the thermal resistance and the thermocouple should be more than 40mm deep, preferably 43mm, and the sealing surface should be sealed tightly; the joint of the bimetal thermometer should be less than 20mm, preferably 16mm, and the sealing surface should be tightly sealed. It is best to solder the connector to the flange of the DN25.
In particular, platinum thermal resistance, when the test temperature is relatively high (normal 200 degrees or more) must not be installed too tight, can not make the thermometer casing "impermeable", otherwise the temperature measurement is not allowed.
For ordinary assembly thermal resistance, less than DN80 requires expansion tube, armored thermal resistance should be degraded, according to "semi-automatic instrument engineering start-up and acceptance specifications" GB50093-2002 started.
Thermocouples, the installation of thermal resistance, the specification said to be inserted between 1/3~2/3 of the pipeline, it is not the core position. At the same time, the specification also clearly states that in order to make thermocouples, thermal resistances are exchanged in the factory, which can be attributed to 2 to 3 specifications.
Installation is not mentioned in the straight pipe section and the corner. The most important thing is that if you install it on the straight pipe section, you should pay attention to inserting the depth. When installing the bend, pay attention to the medium flow direction. The thermal resistance and the bimetal thermometer should be reversed. The media flow is installed.
The hot-spot or bi-metal thermometer pressure nozzle is at an angle of 45° to the process pipe; the depth of insertion is 1/2 of the process pipe; if the pipeline is less than 80, it is expanded to 80. It has been reversed to 45 degrees. Nowadays, it is basically a straight-lined installation. Try to choose the flange connection and try to take care of the casing.
