A pressure switch is actually a kind of control mechanism that is specially designed to start an electrical connection when a particular amount of pressure is placed on it (or relieved from it). Many different types of pressure switches are now available, two of which can be classified as hydraulic and pneumatic pressure switches. These types of switches are used in places like swimming pools, factory machinery and many other applications.
Hydraulic pressure switches:
Hydraulic pressure switches are used in many different ways. These types of pressure switches can be commonly found in trucks and cars. The hydraulic pressure switches activate the warning light if the vehicle’s oil pressure drops to a level that can possibly create problems for the engine.
The hydraulic pressure switches are also built into the braking system of the vehicle. When the driver depresses the brake pedal, the pressure rises and increases the pressure found in the hydraulic brake pipe. Other hydraulic pressure switches are used throughout different components, including air conditioning and air filtration systems.
Pneumatic pressure switches:
These types of pressure switches are extremely helpful in the appropriate charging of different batteries, particularly the designs that utilise a mixture of nickel with some other metal. Basically, the pneumatic pressure switches help to adjust the rate of charge, thus preventing the battery from receiving excesses of current.
The pneumatic pressure switches can also be used for adjusting the function of a gas compressor. In this type of application, pressure serves as the means for determining when to shut off the electric flow into the compressor. This greatly helps to prevent an overload situation.
