Differential Pressure Switches
Differential Pressure Switch PS93 SPDT General Purpose
The PS93 Series compact design enables them to be mounted in tight spaces.The switches use a piston/diaphragm design which incorporates the high proof pressure of piston technology with the sensitivity of a diaphragm design. The PS93 series switches may be…
Read moreDifferential Pressure Switch – 901 Type
Adjustable differential pressure switch monitoring overpressure, vacuum or differential pressure of liquid and gaseous – also aggressive –media. The pressure switch uses a scaled adjustment knob to enable the adjustment of trip and reset pressure without the use of a…
Read more630 Pressure, Vacuum & Differential Pressure Switch SPDT Contacts
The 630 series differential pressure, vacuum and overpressure switches are suitable for monitoring neutral and slightly aggressive liquids and gases. Switching element isolated from medium. Ideal for use as flow monitor in sanitary piping/ heating installations or for level monitoring in general…
Read moreDifferential Pressure Switch – 930.8 Series
Adjustable differential pressure switches for monitoring overpressure, vacuum and differential pressure of air or other non-combustible, non-aggressive gases. Possible uses: Monitoring air filters and ventilators Monitoring industrial cooling-air circuits Overheating protection for fan heaters monitoring flows in ventilation ducts Controlling…
Read moreAbout our Differential Pressure Switches
Applications Engineering is a specialist supplier of differential pressure switches, suited to a variety of engineering applications. Our range is ideal for process control in safety-critical environments, and is commonly used for systems in chemical and petrochemical processing, the oil and gas industry, and energy facilities, including nuclear plants and water management.
The pressure switches we offer have been selected for their quality, reliability and economic design. Our components can be used for any general industrial pressure monitoring system, and we offer specialist pressure switches available for more specific or demanding requirements, such as marine environments.
How does a differential pressure switch work?
Differential switches are used to sense pressure differences between two points in a system, and actuate if a pre-defined difference is met. Across the hundreds of varieties of pressure switches, three things remain constant: a sensor (either bellows or diaphragm), a spring for determining the range set point and a snap-acting micro-switch.
When the pressure difference between the two ports becomes too great, the force on the diaphragm or bellows overpowers the tension set in the spring, causing an axial movement balancing arm or similar mechanism. This actuates the micro-switch which contains the electrical contacts.
Differential pressure switch applications
The Applications Engineering differential switch range includes options for neutral and aggressive gases and liquids, to ensure the right stability for your application. These are ideal for;
- Tracking chamber vacuum or overpressure
- Monitoring and control of pressure-sensitive processes
- Filter / level monitoring
- Flow monitoring
At Applications Engineering, we are proud of our customer service and highly competitive rates. Our products represent great value, and are rigorously tested for safety and offer exceptional durability to ensure your complete satisfaction.
If you’re not sure which of our differential pressure switches is best for your process, the Applications Engineering technical team are always happy to offer expert recommendations. Call us today on 01825 764737 or use our contact form on this page.
