Overview of Pressure Switches:
What is a Pressure Switch?
Pressure switches convert the energy (or pressure) that is in a system and converts it to an electrical signal. A pressure switch has a set point (or limit) that when that limit is reached, the pressure switch will send a signal that the pressure has reached that limit. The limit can be as pressure is rising or falling as well as when vacuum pressure is rising or falling. The signal can be a contact opening, a contact closing, or an electronic High or Low signal.
What is a Vacuum Switch?
Vacuum switches operate differently than a pressure switch. While a pressure switch operates in the pressure ranges above atmospheric pressure, a vacuum switch operates in the pressure range that is below atmospheric pressure. Typical applications would be in the HVAC/R, food and beverage, and medical industries.
Capabilities: Gems Sensors is a leading manufacturer of both user-adjustable pressure switches and factory set pressure switches. Some typical applications could be on an air compressor. When the air contained in the compressor’s tank is low, the pressure switch will trigger the compressor to start pumping and create more pressure in the tank. Once the pressure in the tank reaches the desired pressure (set point), the compressor will turn off. This cycling will repeat as needed.
Another application can be achieved within a water pump system. The water pump will be on long as there is demand for water pressure. As the pressure in the system reaches the limit (the set point), the pressure switch will then trigger the pump to turn off. As the pressure in the system now drops below the set point for low pressure, the pressure switch will trigger the water pump to turn back on and increases the pressure in the water system. This cycling will repeat as needed.
What does Gems Offer for Pressure Switches?
Set points: 0.75 to 15 psi
(0.051 to 1 bar)
Max pressure: 150 psi (10.3 bar)
Set points: 3.5 to 100 psi
(0.24 to 7 bar)
Max pressure: 350 psi (24 bar)
Set points: 10 to 4,350 psi
(0.7 to 300 bar)
Max pressure: 7,000 psi (483 bar)
What does Gems Offer for Vacuum Switches?
IP Ratings and How They Apply to PS61 Pressure Switches
PS71 Pressure Switch for Fire Protection Equipment
Pneumatic Pressure Sensors: 1100 and PS41 series
Hydraulic Pressure Sensors: 3200 and PS61 series
PS11 Series Low Pressure Switch
PS11 Series Low Pressure Switches are ideal for low pressure applications. These switches have a life expectancy of 1 million cycles making them extremely reliable. Their snap-action microswitch resets automatically and meets or exceeds...
PS41 Series Pressure Switch
PS41 Series Pressure Switches are designed for demanding applications where space and/or price are a concern. These switches utilize a piston/diaphragm design, which incorporates the high proof pressure of piston technology with the sensitivity of...
PS61 Series Pressure Switch
PS61 Series Pressure Switches are designed for OEM applications and are available with enhanced ingress protection (IP) to IPX7, IPX9K, and IP6KX and integral electrical connections. PS61 Pressure Switches can withstand temperatures up to...
PS71 Series Pressure Switch
PS71 Series Hydraulic Pressure Switches are versatile general purpose hydraulic pressure switches that can be used in a wide range of hydraulic pressure sensor and pneumatic pressure sensor applications. The proven piston/diaphragm design of the...
PS72 Series Pressure Sensor
PS72 Series Pressure Sensors are versatile microswitch based pressure switches that are designed for medium pressure OEM applications. They offer all the performance of our proven PS71 model with the low temperature capability of Kapton®....
PS75 Series Pressure Switch
PS-75 Series Pressure Switches have all metal surfaces for overload stops and deliver reliable operation under extremely high pressure surges. They are designed with a wear disc and cushioning ring for increased life. PS-75 use a piston/diaphragm...
PS76 Series Pressure Switch
PS76 Series Pressure Switches are versatile microswitch based pressure switches that are designed for high pressure OEM applications. They offer all the performance of our proven PS75 model with the low temperature capability of Kapton°....
PS81 Vacuum Pressure Switch
PS81 Vacuum Pressure Switches are ideal for low vacuum applications. This pressure switch offers a life expectancy of 1 million cycles, which means long-term reliability. Their brass housing and choice of four diaphragm materials ensures chemical...
PS82 Vacuum Pressure Switch
PS82 Vacuum Pressure Switches are miniature vacuum pressure switches, based on our proven PS71 pressure switch series. They are designed for demanding applications where space and/or price are strong concerns. Small Size for Demanding...
3600 Series Pressure Switch
3600 Series Electronic Pressure Switches are highly resistant to shock and vibration and feature no moving parts for reliability. These switches are ideal alternatives to electromechanical types in high cycle pressure applications, or when broad...
PS98 Solid State Pressure Switch
PS98 Solid State Pressure Switches are highly resistant to shock and vibration and features no moving parts for reliability. This switch is an ideal alternative to electromechanical types when cycles exceed 50 cycles/minute and broad frequency...