In electrical devices a switch is basically a component that is used for adding or removing power to a device. These switches operate by establishing or breaking an electrical circuit so as to affect the power offered to a device.
A pressure switch is one of the most common types of switches used. They are switches that operate by breaking or making an electric contact depending on the pressure implied on the switch. Upon reaching a certain level of pressure, the switch is activated to break or establish the electrical circuit. Pressure switches can be activated when pressure is removed or added, and turn the circuit on or off after attaining a certain level of pressure.
What functions do differential pressure switches offer?
Differential pressure switches convert the pressure changes between 2 individual systems into an electrical function. Both systems are continuously monitored and their relative pressure is calculated.
When there is a pressure change in one of the two systems, the changes in pressure are compared with a set of differential points. However, if the pressure exceeds the permissible levels, the differential pressure switch is activated.
Due to the many different uses of differential pressure switches, they are popularly used in a number of industries. Some devices that use differential pressure switches include refrigeration devices and fuel cells.
