What is the air conditioning pressure sensor? What is a working principle?
Can be understood as a switch. Minute off and normally open two kinds. Generally mostly closed.
Pressure sensor to the pressure signal conversion failure signal! Pressure sensor that is not a thank you, one by one metaphor your field with the light Xie Xie, need to hand pressure, and air pressure outside the Xie Xie, Xie early agricultural style pattern of non-system pressure, the pressure in the set value of the hour, Xie closed to the effect of the cover to the cover, of course, is also able to pay off the pressure to pay some of the equipment, Of the general air conditioning inside and outside are no pressure Xie closed, at least also pay a warm, an electric drip.
First, the pressure sensor and the pressure switch are two different concepts, the pressure sensor is the analog signal, the pressure switch is the digital signal. The pressure sensor will output a 0-4v signal according to the size of the pressure in the air conditioning system, and control the board or CPU to make the load shedding alarm shutdown according to the actual situation of the signal. And the pressure switch is to provide a digital 0 (open) or 1 (off), and some units both pressure switch and pressure sensors, such as McQuay whs series chillers, pressure switch set in the compressor head suction, The pressure sensor in the return air pipe, hope to help.
The principle is that when the pressure exceeds the set range, he works. The specific form is changed from the original conduction state to non-conductive state, so that the computer board to receive his changes in the signal, resulting in the corresponding protection.
