Overview of Small Pressure Switches
Opinion | Apr. 7th, 2025
Joshua Matthew Williams
Pressure Product Line Manager
Small pressure switches are compact devices that monitor fluid or gas pressure and activate electrical contacts when a preset threshold is reached. They are essential for controlling pumps, compressors, and safety systems in various industries.
These devices monitor and control pressure levels in various applications, contributing to the overall performance of aircraft and spacecraft. This article will explore the specific applications of pressure switches in the aerospace sector, highlighting their significance and functionality.
Key Principles
Operating Mechanisms:
Electromechanical: Uses a pressure-sensitive element (diaphragm, piston, or Bourdon tube) coupled with a spring and snap-action mechanism to open or close contacts once the pressure exceeds (or drops below) a set value.
Electronic: Utilizes sensors (e.g., strain gauges or capacitive elements) with built-in circuitry to provide a digital output with higher accuracy and programmability.
Core Components:
Sensing Element: Converts pressure changes into mechanical movement.
Spring & Adjustment Mechanism: Sets the cut-in and cut-out pressure points, providing necessary hysteresis to prevent rapid cycling.
Electrical Contacts & Housing: Ensure reliable switching and protect internal components, with options for explosion-proof or watertight designs in hazardous environments.
Applications and Advantages
Applications:
Used in water pump systems, compressed air setups, HVAC, industrial automation, and hazardous locations where safe pressure control is critical.Advantages:
Their small size allows for easy integration into limited spaces, while rapid and reliable switching enhances system safety and efficiency. Additionally, they are available in various configurations to meet specific industrial standards.
Anwoll pressure switch
Anwoll is a leading developer of pressure measurement and applications, with a mature series of pressure switches suitable for daily and cutting-edge applications.
If you would like to learn more about our pressure switches, please contact us directly.
