Working characteristics of normally open vacuum pressure switch

The working characteristics of the normally open vacuum pressure switch are mainly reflected in the following aspects:

1. Initial State and Trigger Mechanism

Initial state: In the initial state, the electrical contacts of the normally open vacuum pressure switch are open, that is, the circuit is in an open state.

Trigger mechanism: When the pressure in the vacuum system reaches or exceeds the set pressure threshold, the sensing element (such as diaphragm or spring) will be subjected to pressure, causing corresponding displacement or deformation. This displacement or deformation will trigger the closing action of the electrical contacts, thereby connecting the circuit.

2. Control Functions and Application Scenarios

Control function: After the contacts of the normally open vacuum pressure switch are closed, it can control the start-up or operation of related equipment. For instance, in a vacuum pump system, when the vacuum degree reaches the set value, the switch contact closes, which can trigger the vacuum pump to stop or switch the working mode.

Application scenarios: Normally open vacuum pressure switches are widely used in scenarios where vacuum degree needs to be monitored and equipment operation controlled based on changes in vacuum degree. Such as vacuum packaging equipment, air tightness testing systems, vacuum drying and distillation processes, etc.

3. Reset Mechanism and Stability

Reset mechanism: When the pressure in the vacuum system drops to a safe range, the sensing element will reset, causing the electrical contacts to open and the circuit to return to an open state. This reset mechanism ensures that the equipment can automatically stop running or return to its initial state after the pressure returns to normal.

Stability: The normally open vacuum pressure switch adopts high-precision and high-stability pressure sensors and transmission circuits, which can accurately sense pressure changes and stably control the on-off state of the contacts. Meanwhile, its sealed stainless steel sensor also enhances the safety and reliability of the equipment.

4. Installation and connection flexibility

Installation flexibility: Normally open vacuum pressure switches typically adopt British standard pipe thread quick couplings or copper tube welding installation structures, which are flexible and convenient to install. Users can choose the appropriate installation method according to their actual needs.

Connection flexibility: The wire connection method of the switch also offers flexibility. Users can choose between the plug-in type or the wire type connection method according to their needs.