Vacuum Pressure Switches

Vacuum pressure switches contains a pressure sensing element, such as a diaphragm, which deforms in response to changes in vacuum pressure, the deformation is proportional to the vacuum level, allowing the device to detect when the pressure reaches the set threshold.

The vacuum pressure switch includes an adjustable setpoint mechanism, typically a spring and screw or electronic controls, allowing users to set the specific vacuum level at which the switch will activate or deactivate. When the vacuum pressure reaches the setpoint, the sensing element triggers a switching mechanism, which can open or close electrical contacts. This action can be used to control connected devices, such as vacuum pumps, compressors, alarms, or other equipment. Inside the switch, electrical contacts are configured as normally open (NO) or normally closed (NC). The switch activates when the vacuum level reaches the setpoint, either completing or interrupting an electrical circuit to control the connected equipment.

Mechanical vacuum pressure switches use mechanical components, like diaphragms, to sense changes in vacuum pressure and actuate the switch contacts. These switches are reliable, simple, and suitable for many standard vacuum applications. Differential vacuum pressure switches measure the difference between two vacuum points within a system and activate the switch based on this differential pressure rather than absolute pressure.

Vacuum pressure switches are employed in various industrial processes, such as vacuum distillation, freeze-drying, and coating, where maintaining a precise vacuum level is imperative for product quality and safety. Vacuum pressure switches are widely used in vacuum systems to control vacuum pumps where the switch turns the pump on or off to maintain the desired vacuum level, ensuring efficient operation and preventing overloading or damage. In leak detection systems, vacuum pressure switches monitor for unexpected changes in pressure that could indicate a leak in pipelines, tanks, or vacuum systems, triggering alarms or shutdowns to prevent safety hazards or damage. In heating, ventilation, and air conditioning (HVAC) systems, vacuum pressure switches monitor vacuum levels in refrigerant lines or duct systems, ensuring proper pressure is maintained for efficient operation and leak prevention. Vacuum pressure switches are used in automotive systems, like vacuum-assisted braking systems, and in aerospace applications, such as altitude simulation and space environment testing, to monitor and maintain appropriate vacuum levels.

Vacuum pressure switches provides automated control over vacuum equipment, reducing the need for manual intervention and improving process efficiency, and enhance safety by triggering alarms or automatic responses when vacuum levels deviate from set parameters, preventing equipment damage, process disruptions, or hazardous situations. Vacuum switches are suitable for a wide range of applications, from simple on/off control to more complex process automation tasks involving vacuum systems as they are capable of detecting and responding to small changes in vacuum pressure, providing precise control in applications where maintaining specific vacuum levels is critical. These vacuum switches are more affordable than more complex monitoring systems, especially in applications where basic vacuum pressure monitoring and control are sufficient.