In the industrial field, there are various types of equipment, and switches play a very important role. The market demand for switches has been rising. It is to ensure the normal operation of equipment and the safety of operators, so we need to understand it more deeply.

A pressure switch is a device that detects the pressure in an electrical circuit. When the set pressure value is reached, it will automatically cut off the contact to ensure the safety of the equipment. Pressure switches are mainly used in various heavy industries such as petrochemicals and power plants to ensure the normal use of machines and avoid production accidents.

Pressure switches are generally divided into three types:

1. Mechanical pressure switches act on different sensor devices when the pressure increases to a certain value, causing deformation, moving upward through structures such as railing springs to activate the micro switch at the top, so that the electrical signal can be output.
2. Electronic pressure switch has many advantages. It is high precision digital pressure switch, and the built-in processor runs at high speed, which can freely set the upper and lower limit control points, means digital pressure switch with 2 setpoints. In addition, this pressure switch can resist vibration, is very stable and reliable, can well protect and control the equipment, and the electronic display is very intuitive, and has a long service life. However, the cost of this switch is relatively high and requires power supply. It is still very suitable for some equipment.
3. Explosion-proof switches can be used in various harsh and dangerous environments, and this switch has good corrosion resistance and can provide different pressures. The most commonly used places are metallurgy, boilers, petroleum and other high-risk industries. For example digital pressure switch for oil pressure.

With the increasing demand for pressure switches and the continuous advancement of technology, switches are also facing various reforms. At present, there are already intelligent pressure switch products, but there are still a few in use. In the future, switch equipment can be integrated with microprocessors and PC technologies to realize various intelligentizations, which can well ensure the reliability of switches and save a lot of human resources.

Keywords：

1. high precision digital pressure switch
2. digital pressure switch with 2 setpoints 
3. digital pressure switch for oil pressure