Pressure sensor installation location - Solutions - Huaqiang Electronic Network

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With the development of electronic computer technology and electronic components, the pneumatic telemetry system is moving towards high intelligence, automation, high precision, low standard and miniaturization. The pneumatic telemetry system consists of terminal equipment and line equipment (pressure sensors, The terminal device is located in the office and its function is to supply power to the line device) to automatically measure, display and print the air pressure value of the cable. The line equipment is set on the line, which is to convert the sex into an electrical signal and send it to the terminal equipment. The line equipment is the main means of ingesting the air pressure information, and it plays an important role in the air pressure telemetry system. Therefore, the quality of the line equipment is high and low, and the accuracy is high, which is directly related to reducing the maintenance workload and simplifying the air pressure inspection process.

The installation position of the pressure sensor is also very particular. In order to determine the number and specific installation position of the pressure sensor, it is necessary to consider each inflation section of the inflation net.

(1) The pressure sensor must be installed along the cable, preferably at the cable connector.

(2) There should be no less than 4 pressure sensors for each cable, and two pressure sensors close to the telephone office should not be 200m apart.

(3) Install one at the beginning and the end of each cable.

(4) One branch point should be installed for each cable. If the two branch points are close to each other (less than 100m), only one can be installed.

(5) One cable installation method should be installed.

(6) For cables without branches, because the cable program of the barrier is the same, the installation gauge of the pressure sensor is not 500m, 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 installing the pressure sensor at the starting point, from the starting point of 150~200m, it is necessary to install another one. Of course, in the design, economic and technical factors must be considered, and no installation is required. Where the sensor is located, it should not be installed.

With the production of pneumatic telemetry equipment, pressure sensors are also used on cables. For the normal operation of the entire pneumatic telemetry system, the pressure sensor needs to be matched with the pneumatic telemetry device to coordinate the work. From the working mode of the air pressure telemetry system, there are two types: "select line plus point selection" and "line selection". Then there must be a reasonable solution to the pressure sensor failure.