What is the difference between the pressure sensor, the pressure controller and the pressure switch used in the refrigeration air conditioner?
The pressure switch is generally a protective switch, the pressure is too high or too low to control the air conditioning to stop working.
Pressure sensor used to respond to the computer to the internal pressure level of the air conditioning system, the computer to do a real-time detection.
Controller control of the high pressure side of the pressure level, it should be accurate to control the top of the fan above the fan speed.
Pressure sensor: the pressure into the analog signal, is continuous, easy to circuit acquisition, the price is high.
Pressure controller: set a pressure higher than (below) the pressure and pressure controller contact action, send a signal, generally used for protection, the price is low, the action pressure can be adjusted.
Pressure switch: and the pressure controller is basically the same, but the pressure can not be set, the price is very low.
