Pressure Switches

Pressure switches and sensors are essential components in a wide range of industrial and manufacturing applications. These devices provide vital electrical feedback in response to changes in pressure, enabling precise monitoring and control of pressure-based systems.

At Applications Engineering, we offer a vast selection of high-quality pressure switches and sensors to meet the diverse needs of our customers. Our products are designed to perform reliably in demanding environments, from water pumps and compressors to aircraft cabin pressure systems and battery charge control.

How Do Pressure Switches Work?

Pressure switches, also known as pressure sensors, utilise fluid pressure within a chamber to activate a physical mechanism that opens or closes electrical contacts. This triggers connected apparatus, such as a pump or alarm system. The pressure point at which the switch is activated is preset during manufacturing.

In contrast, electronic pressure switches use electronic signals to trigger the switch. These devices often provide a secondary signal to continuously monitor pressure, and actuation points can be adjusted via an interface on the device.

Types of Pressure Switches

• Single Pole Single Throw (SPST) Switches: Basic switches that open or close a single circuit at a set pressure.
• Single Pole Double Throw (SPDT) Switches: These switches provide two outputs, allowing one circuit to be opened while another is closed, offering greater control over systems.

How to Adjust Pressure Switches

Mechanical pressure switches are typically not adjustable as their pressure set points are fixed during manufacturing. However, electronic switches can be adjusted for greater flexibility, allowing users to modify actuation points and other settings.

Applications of Pressure Switches

Our pressure switches and sensors are widely used across various industries, including water pumps, gas compressors, aircraft systems, and battery charge control. They respond to pneumatic or hydraulic pressure, making them versatile and suitable for many industrial environments.

How Does a Differential Pressure Switch Work?

A differential pressure switch measures the difference between two pressures and activates when the difference reaches a set value. This is critical for maintaining pressure balance in systems such as HVAC or filtration units, where it’s important to monitor pressure changes across different points.

Quality and Compliance

At Applications Engineering, we are committed to delivering reliable pressure measurement solutions that meet stringent quality standards. All of our pressure switches and sensors comply with relevant regulations, ensuring dependable performance in critical environments.