Differential Pressure Switches

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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
 

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.