How a Pressure Switch Works

Pressure switches are present in numerous systems involved in our daily lives. From pressure switches for fire systems, pressure switches for pumping water in reservoirs to their industrial applications in various processes. Let's understand a little more about how these components work.

The pressure switch is also known as a pressure controller, configured to detect pressure variation in a system and respond in a certain way through an electrical response. In some situations, this response given by the pressure switch occurs with an automatic system response, while there are cases where this response acts as an alert for manual action by the operator.

There are several types of pressure switches, although they all fall into one of two distinct categories: hydraulic pressure switches and pneumatic pressure switches. Hydraulic pressure switches are widely used in fire systems, swimming pools, water reservoirs, food industry, liquid fuel systems, water pump pressure switches, among others.

Pneumatic pressure switches are used in pressurized gas systems. A very common application for these components is air compressors. The pressure switch is the component responsible for detecting the pressure in the reservoir, releasing or blocking the pressurization of more air by the motor through an electrical connection.

The quality of this component is of utmost importance, not only for system operation, but for the safety of the entire process and environment, and can be decisive in fighting a fire or even preventing gas reservoirs from being subjected to pressures above their capacity. and may cause accidents of high severity.

What is an electronic pressure switch?

An electronic pressure switch has the function of converting the average pressure found in the measuring cell into a digital format. Compared to mechanical pressure switches, electronic pressure switches have a more complex operation. Despite the higher cost, these pressure switches tend to have extended durability due to the absence of moving parts, which tend to wear out more easily.

It operates as follows: The pressure measuring cell has a membrane, responsible for receiving the pressure to be measured. A circuit of resistors attached to this membrane pick up any change in pressure exerted on the membrane by changing the voltage of this system. These changes are processed by an electronic system that after processing presents the result with the execution of a command, opening or closing the contact.

Electronic pressure switches have very variable adjustment ranges, depending on the model, and a high level of precision, indispensable for some industrial applications. The reliability present in electronic pressure switches, as to its accuracy, is what guarantees the durability of an entire system, as well as equipment that depends exclusively on this component to fulfill its function.

Lefoo operates a complete line of pressure switches, with electronic pressure switches to suit your needs. Our technical department has professionals able to support you in choosing the most suitable items for your needs. Contact us and learn more.