Differential Pressure Switches

Differential Pressure Switch Elements

A low differential pressure switch is an electro-mechanical device that operates on the basic principles of levers and opposing forces. They are mainly used for detecting a difference in pressure between two points in a system. Three essential elements in the switch are used in various combinations to manufacture hundreds of deviations. These elements are:
  • Sensing element made of either a bellows or diaphragm
  • Stable spring to determine the range set point
  • Snap-acting microswitch

Low Differential Pressure Switch Operating Value

Used for control purposes, a differential vacuum switch is designed to sense a difference in pressure between two pressure sources. When the vacuum pressure from two dissimilar sources in a process is connected to a sensing diaphragm, the pressure difference creates a significant force. The force then moves a balancing mechanism to affect the minimal movement required for micro-switch actuation of the overall low differential pressure switch.

Special Features
How to Configure a Pressure Switch

Differential Pressure Switch Features 

Solon’s differential vacuum pressure switches provide numerous vacuum and pressure actuation benefits, some of which include:
  • Differential pressure monitoring and direct switching of electrical loads
  • For gaseous, liquid, aggressive, highly viscous or contaminated media, as well as aggressive ambient conditions
  • Process industry: chemical, petrochemical, on- and off-shore oil & gas, technical gases, environmental technology, machine building and general plant construction, water treatment, pharmaceuticals
  • Pump monitoring and control/filter monitoring, level measurement in closed tanks
Additionally, applications that require level sensing, pressure drops across a filter, and two-way pressure differentials are well-suited to Solon Differential Pressure Switch models.  

Differential Pressure Switch Applications

Solon's Differential Pressure Switches have a frictionless switching mechanism, which amplifies the movement of the switching element, resulting in improved life, repeatability, and lower  deadbands . Our low differential pressure switches are used where the pressure difference between two sources are being monitored. Solon’s differential switches are available in both explosion-proof and weather-tight models and are designed for applications where accuracy, high reliability, safety and long cycle-life are paramount, such as:

Learn more about the use of Solon Differential Pressure Switches:

Contact Solon Manufacturing Co.

Contact us for more information on our low differential pressure switches, or request a quote.