The pressure switch is a function switch that automatically turns on or off when the set value is reached according to the set pressure.
The pressure sensor is composed of a pressure sensitive element and a conversion circuit, and uses the pressure of the measured medium to act on the pressure sensitive element to produce a slightly varying current or voltage output. Sensors often need to be used with external amplifier circuits to complete processes from pressure detection to control and display. Since the pressure sensor is a primary component, the signal fed back by the pressure sensor needs to be processed, analyzed, stored, and controlled by the measurement and control system to make the industrial automation equipment and engineering operation control more intelligent.
The pressure relay is a liquid-electric switch signal conversion element that uses liquid pressure to open and close electrical contacts. It is used to send electrical signals to control the action of electrical components when the system pressure reaches the set pressure of the relay, to achieve pump loading or discharge control, sequential operation of the actuators, system safety protection and interlocking. It consists of a pressure-displacement conversion component and a micro-switch. According to the structure type of the pressure-displacement conversion member, there are four types of plunger type, spring type, diaphragm type and bellows type. The plunger structure is divided into a single plunger type and a double plunger type. The single plunger type can be divided into three types: plunger, differential plunger and plunger-lever. According to the contact, there are single contacts and double electric shocks.
The pressure switch is a function switch that automatically turns on or off when the set value is reached according to the set pressure.
Pressure switch, pressure relay, can only open or close the switch under the pressure you give, for simple position control, all switch output! Pressure relays provide more output nodes or node types than pressure switches. The pressure sensor output can be either an analog signal or a digital signal, which is easy to process at a later stage or can be converted into a standard transmitter signal for remote transmission.