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Correct Installation of Pressure Sensor

2022-03-04

Pressure sensors are the most commonly used sensors in industrial practice. They are widely used in various industrial automation environments, involving water conservancy and hydropower, railway transportation, intelligent buildings, production automation, aerospace, military, petrochemical, oil wells, electric power, ships, and machine tools. , pipelines and many other industries, the following briefly describes some of the correct installation of pressure sensors.


Usually the high-temperature melt pressure sensor is damaged due to its improper installation position. If the sensor is forcibly installed in an excessively small hole or an irregularly shaped hole, the vibration film of the sensor may be damaged by the impact. Choosing the right tool to process the mounting holes is beneficial to controlling the size of the mounting holes. In addition, the proper installation torque is conducive to the formation of a good seal, but if the installation torque is too high, it will easily lead to the slippage of the high-temperature melt Pressure Sensor, in order to prevent this This phenomenon occurs, and the anti-detachment compound is usually applied to the threaded portion of the sensor prior to installation.


1. Correct installation method of pressure sensor
(1) Verify the frequency response of the pressure sensor under normal atmospheric pressure and standard temperature conditions with appropriate instruments.
(2) Verify the correctness of the pressure sensor code and the corresponding frequency response signal.
2. Determine the specific installation location
In order to determine the number and the specific installation position of the pressure sensor, it is necessary to consider the respective inflation section of the inflator.
(1) The pressure sensor must be installed along the cable, preferably at the cable joint.
(2) There shall be no less than 4 pressure sensors installed on each cable, close to the two pressure sensors of the telephone exchange and shall not be separated by 200m.
(3) Install one at the beginning and at the end of each cable.
(4) One branch point should be installed for each cable. If two branch points are closer (less than 100m), only one can be installed.
(5) One cable change method (heading, underground) should be installed
(6) For unbranched cables, because the cable patterns of the barriers are the same, the installation distance of the pressure sensor is not 500 m and the total number is not less than 4.
(7) In order to facilitate the determination of the pressure sensor failure point, in addition to the installation of the pressure sensor at the starting point, 150 ~ 200m away from the starting point, but also to install an additional one of course in the design, we must consider the economic and technical factors, do not need to install Where pressure sensors are located, they should not be installed.
3. Inspection size
If the size of the mounting hole is not suitable, the high-temperature melt pressure sensor will be easily worn during the installation process. This will not only affect the sealing performance of the equipment, but also make the sensor unable to fully function, and may even cause potential safety hazards. . Only suitable mounting holes can avoid thread wear (thread industry standard 1/2-20 UNF2B). Mounting holes can often be used to test the mounting holes to make appropriate adjustments.
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