The principle of explosion-proof pressure sensor

What is the principle of explosion-proof pressure sensor? Explosion-proof pressure sensor has many advantages and has been widely used in many industrial fields. The following is the working principle of explosion-proof pressure sensor and the matters needing attention in installation.

The explosion-proof pressure sensor principle is basically the same as an ordinary pressure sensor. The pressure of the medium to be measured is transmitted to the explosion-proof transmitter through the communication joint. The measuring head is a component that can change the capacitance. Due to the effect of pressure, the capacitance of the measuring head changes with the change of pressure. The change of the measuring head output capacitance is transmitted to the oscillator of the oscillating plate. The oscillator changes the oscillating frequency according to the changed capacitance. The oscillating frequency signal undergoes integrated operation amplification and detects the half wave signal with a small oscillation frequency. This signal is then sent to Smart microprocessors.

Explosion-proof pressure sensors need to pay attention to some matters during installation. For example, explosion-proof transmitters must comply with explosion-proof regulations during installation. It is also not allowed to freeze the measured medium, otherwise it will damage the sensing element isolation diaphragm, resulting in damage to the transmitter. Finally, it should be installed in a place where the temperature gradient and humidity change are small, without impact and vibration. Of course, there are some small details that require our attention. The specific issues depend on the site environment. Different environments need to pay attention to different issues.