Overview of pressure sensors

Pressure sensor is a kind of sensor that can convert physical pressure into electronic signal. Because of the different working principles and application scenarios of pressure sensors, they are divided into many types, such as: piezoelectric, capacitive, resistance, welding, micro-electromechanical system (MEMS) type. In modern industry, pressure sensors are widely used in aerospace, automotive, machinery, chemical, electric power, medical, environmental monitoring and other fields.

Correct installation method of pressure sensor:

(1) Verify the frequency response value of the pressure sensor under ordinary atmospheric pressure and standard temperature conditions through the appropriate instrument.

(2) Verify the correctness of the coding of the pressure sensor and the corresponding frequency response signal.

2. Determine the installation position

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 network.

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

(2) Each cable is equipped with no less than 4 pressure sensors, and the two pressure sensors near the telephone office should not be as large as 200m apart.

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

(4) The branch points of each cable should be installed 1, if the two branch points are close to each other (less than 100 m), only 1 can be installed.

(5) Cable laying method (overhead, underground) change place should be installed 1

(6) For cables without branches, because the cable program of the base line is consistent, the installation distance of the pressure sensor is not large 500m, and the total number of them is not less than 4.

(7) In order to facilitate the determination of the pressure sensor fault point, in addition to the installation of the pressure sensor at the starting point, 150~200m from the starting point, but also install another 1, of course, in the design, must consider the economic and technical factors, in the place where the pressure sensor does not need to be installed, it should not be installed.