Gauge Pressure Switches

Gauge pressure switches are used to monitor and control the pressure of a fluid (liquid or gas) in a system relative to atmospheric pressure, they operate by detecting changes in pressure and activating or deactivating an electrical circuit when a preset pressure level (setpoint) is reached.

Gauge pressure switches are used in industrial and commercial applications to automate equipment, provide safety interlocks, or trigger alarms based on specific pressure conditions.

1 - 48 of 52 Products
OEM Compact Pressure Switch - PSM03
WIKA
Model PSM03.png
Request Information
OEM Compact Pressure Switch - PSM02
WIKA
Model PSM02.png
Request Information
OEM Compact Pressure Switch - PSM01
WIKA
Model PSM01.png
Request Information
Mini Pressure Switch - PXS
WIKA
Wika Mini pressure switch, Model PXS
Request Information
Mini Pressure Switch - PXA
WIKA
Wika Mini pressure switch, Model PXA
Request Information
Mechanical Pressure Switch - Model PCA
WIKA
Wika Mechanical pressure switch, Model PCA
Request Information
Gas-Actuated Thermometer with Switch Contacts - 74-8xx
WIKA
Wika Gas-actuated thermometer, Model 74-8xx
Request Information
Gas-Actuated Thermometer with Switch Contacts - 73-8xx
WIKA
Wika Gas-actuated thermometer, Model 73-8xx
Request Information
Electronic Pressure Switch with Display - PSA-31
WIKA
Wika Electronic pressure switch, Model PSA-31
Request Information
Electronic Pressure Switch - PSD-30, PSD-31
WIKA
Wika Electronic pressure switch, Models PSD-30, PSD-31
Request Information
Absolute Pressure Switch - APW, APW10
WIKA
Wika Absolute pressure switch, Models APW, APW10
Request Information
Absolute Pressure Switch - APA, APA10
WIKA
Wika Absolute pressure switch, Models APA, APA10
Request Information
800/810 Series Pressure Transmitter & Switch
Noshok
Noshok Industrial Pressure Transmitter & Switch, 800/810 Series
from $236.21 USD
6905GZE-7042 Series Pressure Switch
Custom Control Sensors
CCS6900GZE
Request a Quote
6900PE Series Pressure Switch
Custom Control Sensors
6900PE34 Front
Request a Quote
6900P Series Pressure Switch
Custom Control Sensors
6900G12 Front
Request a Quote
6900GZEK Series Pressure Switch
Custom Control Sensors
6900GZEKFront
Request a Quote
6900GZE-7066 Series Pressure Switch
Custom Control Sensors
6900GZE12-7066 Front
Request a Quote
6900GZE Series Pressure Switch
Custom Control Sensors
6900GZE Series Pressure Switch
Request a Quote
6900GZ Series Pressure Switch
Custom Control Sensors
6900G12 Front
Request a Quote
6900GEK Series Pressure Switch
Custom Control Sensors
Custom Control Sensors Pressure Switch, 6900GEK Series
Request a Quote
6900GE Series Pressure Switch
Custom Control Sensors
6900GE12 Front
Request a Quote
6900GCZZE5Y Series Pressure Switch
Custom Control Sensors
6900G12 Front
Request a Quote
6900G Series Pressure Switch
Custom Control Sensors
6900G12 Front
Request a Quote
6862G Series Pressure Switch
Custom Control Sensors
6862G
Request a Quote
6860G Series Pressure Switch
Custom Control Sensors
6862G
Request a Quote
675GE8000 Series Pressure Switch
Custom Control Sensors
675GE8Front
Request a Quote
675GE Series Pressure Switch
Custom Control Sensors
675GE8Front
from $1,345.44 USD
675G8000 Series Pressure Switch
Custom Control Sensors
675GE8Front
Request a Quote
6712 Series Piston Switch
Custom Control Sensors
CC 6712 Piston Switch
Request Information
646PE Series Pressure Switch
Custom Control Sensors
646PE21 Front
Request a Quote
646GZE-7011 Series Pressure Switch
Custom Control Sensors
646GZE1 Front
Request a Quote
646GZE Series Pressure Switch
Custom Control Sensors
646GZE1 Front
from $1,423.70 USD
646GVZE Series Pressure Switch
Custom Control Sensors
646GVZE2 Front
Request a Quote
646GE Series Pressure Switch
Custom Control Sensors
646GE1 Front
from $841.44 USD
642GE Series Pressure Switch
Custom Control Sensors
642GE
Request a Quote
611GZE8100 Series Pressure Switch
Custom Control Sensors
611G8Front
from $746.67 USD
611GZ8100 Series Pressure Switch
Custom Control Sensors
611G8Front
Request a Quote
611GE8000 Series Pressure Switch
Custom Control Sensors
611GE8Front
from $588.72 USD
611GE Series Pressure Switch
Custom Control Sensors
611GE8Front
Request a Quote
611G8000 Series Pressure Switch
Custom Control Sensors
611G8Front
from $444.41 USD
605P Series Pressure Switch
Custom Control Sensors
605P21 Front
from $286.46 USD
605GZ-7011 Series Pressure Switch
Custom Control Sensors
605G3 Front
Request a Quote
605G Series Pressure Switch
Custom Control Sensors
605G3 Front
from $213.95 USD
604P Series Pressure Switch
Custom Control Sensors
604P21 Front
from $294.36 USD
604GZ-7011 Series Pressure Switch
Custom Control Sensors
604GZ1 Front
from $892.41 USD
604GZ Series Pressure Switch
Custom Control Sensors
604GZ1 Front
from $221.13 USD
604G Series Pressure Switch
Custom Control Sensors
604GJ1 Front
from $576.51 USD

Enhanced Reliability & Reduced Downtime

Industrial gage pressure switches measure and respond to pressure at a single point in a system, activating alarms or controls when set pressure levels are reached. They're essential for ensuring safe and efficient operation in industrial processes.

The gage pressure switch contains a pressure sensing element, such as a diaphragm, piston, bellows, or Bourdon tube, that deforms in response to changes in the fluid pressure., the deformation of the sensing element is directly proportional to the gauge pressure (pressure relative to atmospheric pressure).

Gage pressure switches have an adjustable setpoint mechanism, typically a spring and screw arrangement, allowing the user to set the pressure level at which the switch will activate or deactivate. This setpoint is defined based on the specific operational requirements of the application. Inside the switch, electrical contacts open or close in response to the movement of the pressure sensing element. The contacts can be configured as either Normally Open (NO) where the circuit remains open until the setpoint is reached, at which point it closes to complete the circuit, or Normally Closed (NC) where the circuit remains closed until the setpoint is reached, at which point it opens to break the circuit.

When the process pressure reaches the setpoint, the sensing element moves, causing the switching mechanism to actuate the electrical contacts, either opening or closing them to control the connected device or system.

Gage pressure switches come in mechanical and electronic versions. Mechanical gage pressure switches use mechanical components (such as diaphragms or pistons) to sense pressure changes and actuate the switch contacts. They are known for their simplicity, robustness, and reliability and are suitable for a wide range of standard industrial applications. Electronic gage pressure switches switches utilize electronic sensors (such as piezoelectric, capacitive, or strain gauge sensors) to detect pressure changes. They offer higher accuracy, programmable setpoints, remote monitoring capabilities, and integration with digital control systems.

Gage pressure switches are often used to automatically start or stop pumps or compressors based on the system pressure. For example, in a water pump system, the switch will turn the pump on when the pressure drops below a certain point and off when it reaches the desired pressure. These switches are used to activate alarms or shut down equipment when pressures exceed or fall below safe operating limits, providing a critical safety function in many industrial processes. Gage pressure switches monitor pressure levels in hydraulic and pneumatic systems to control actuators, motors, or valves, ensuring the system operates within desired pressure ranges. In heating, ventilation, and air conditioning (HVAC) systems, gage pressure switches monitor refrigerant or air pressures to control compressors, fans, and other components, ensuring efficient operation and preventing damage. They're used in chemical, pharmaceutical, food processing, and other industries to maintain pressure levels within safe and optimal ranges, gage pressure switches help ensure consistent process conditions. Gage pressure switches can detect a pressure drop across filters in air or fluid systems, indicating that the filter is clogged and needs replacement or cleaning.

Gage pressure switches provides automatic control over system components, reducing the need for manual intervention and improving process efficiency. They are suitable for a wide range of applications, from simple on/off control to more complex process automation tasks, and they enhance system reliability and safety by providing rapid response to pressure changes, preventing potential damage or hazardous situations. Gage pressure switches are more affordable than more complex pressure sensors or transmitters, making them suitable for basic control or safety applications. The setpoints are adjustable, allowing users to customize the pressure levels at which the switch activates or deactivates according to specific operational requirements.