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Air Pressure Switches

A reliable source for Air Pressure Switches information and leading Air Pressure Switches Companies & Manufacturers.

Air pressure switches are mechanical devices which depend on pressure to control the electric air compressor’s working process. An air pressure switch is an important device available in all-electric models. The air pressure circuit configuration of the device conveys power to the motor to function. The switches are programmed to automatically respond when the pressure either falls or rises to one or more set points of pressure, or actuation points. Read More…

Air Pressure Switches Air pressure switches help control air flow and pressure by sensing changes in pneumatic pressure and responding in a predetermined way.
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Leading Manufacturers

Mentor, OH  |  440-205-7600

Tecmark is a designer and manufacturer of remotely actuated controls used by OEMs worldwide. We offer an extensive line of high pressure switches, and our customer service representatives will help you find the perfect model for your application. Whether you are looking for an in-house solution, or an industry need, we continue to develop technological advancements.

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Tecmark Corporation $$$

Lenexa, KS  |  800-676-6794

SOR pressure switches have earned a long-time reputation for their high quality, rugged construction and reliable performance under the most demanding applications. We offer explosion proof, hermetically sealed, and weatherproof switches. We design our pressure switches with high performance in mind, crafting custom, durable pressure switches with the approval of multiple agencies. Our products are designed to be long-lasting, cost effective, and easy to use.

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SOR Inc. $$$

Pompano Beach, FL  |  888-386-4270

For over 35 years, MPL has specialized in unique miniature pressure switch solutions to the world’s leading manufacturers. MPL pressure sensors and switches can be found in the most demanding environments from automotive to health care where long-life, reliable solutions are required. Visit our website for details.

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MPL (Micro Pneumatic Logic, Inc) $$$

Racine, WI  |  262-639-9035

Our incredible pressure switches are capable of monitoring the most hazardous of materials. These affordable products require low maintenance. We have a whole assortment of special switches. If your application demands extra attention then just let us know and we can work with you to determine the best possible solutions for your situation. Give us a call today and our reliable staff will assist you

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Air Logic $$$
placeholder image Tecmark Corporation SOR Inc. MPL (Micro Pneumatic Logic, Inc) Air Logic

Working Principle of Air Pressure Switches

The air compressor pressure switch contains a pressure switch relief valve. This valve assists the machine in easier starting without hassle by releasing line and head pressure. There are various air pressure switches existing, and each one varies in working features. However, the simple operation of switches is still the same in all devices. Once the air compressor is powered, the operator can shift the level to automatic position. Due to this act, the motor starts, while at the same instant, the compressor is pressurized. A pressure system is attained in the device as a result.

air pressure switches

Due to this pressure setting, a diaphragm (inside) breaks the circuit then stops the motor. Simultaneously, back pressure moves out via the pressure relief valve. The pressure drops to a specific level because of the air applied in the process. Again, the motor runs once the contacts become closed. This process goes on until the air compressor is now in use.

How to Select an Air Switch

These are the considerations when selecting an air switch:

  • Select an action (either latching or non-latching)
  • Select the number of switches, rating, and contacts depending on what is to be switched (relay, motor, low voltage electronic board)
  • Select sensitivity: maximum working distance is related to length of PVC tubes between air button and air switch.
  • Select volume of air button: Small volume air buttons and long tubing must be avoided. Sensitivity decreases with an increase in rating. A high-rating air pressure switch can be used only with short distance tubes.
differential air pressure switches

How to Adjust an Air Pressure Switch

The air pressure switch adjusting feature is always inside the cover. Clockwise or counterclockwise turning of the main spring for decreasing or increasing cut out or cut in settings is the key adjustment instruction. The difference in the air compressor may be increased or decreased.

How to Test an Air Pressure Switch

Testing an air pressure switch has the following steps. They are

  • The key task to test the air pressure switch is to remove the power first. This is by unplugging the breaker.
  • Use a screwdriver to remove the cover of the switch. The center screw must be removed for the task.
  • Blue or brown wires which run from the switch to terminals block must be cut. However, the white and black wires which are meant for power purposes must not be cut.
  • The next step is to provide pressure to the switch by use of pressure-producing sources.
  • Then, set ohmmeter probes to the loose wires. The switch must be closed during air application. The ohmmeter displays zero ohms when the switch closes, thus indicating the fine status of air pressure.
  • Finally, the air pressure switch is adjusted using the set point screw.

Applications of Air Pressure Switches

The air pressure switch works in numerous industries for different applications. The air pressure switch is used to give electrical feedback by measuring rising and falling temperatures of systems. The air pressure switch has its use in many industrial control systems such as below:

Compressed Air Systems

It is because the compressing function does not touch the height it is expected to if the pressure switch doesn’t work well.

HVAC Equipment

Both cooling and heating features are offered by HVAC equipment which can be found in commercial and residential buildings. The air pressure switches are available in HVAC equipment for safety reasons. In the HVAC equipment, air pressure switches assist in sensing maximum and minimum set points. The feature is available in air conditioning systems. This feature assists the system to stop or start based on the set point level.

air compressor switch

Process Equipment

Air pressure switches are widely applied in manufacturing sectors. Air pressure switches assist manufacturing sectors and industries in achieving goals without any gap. The production efficiency in any manufacturing sector is attained by the pressure switch. These switches guarantee a fluid supply and constant gas for continuous working of systems in the industries.

Pumping System

Guaranteeing a water level in the pump is the main purpose of air pressure. Due to the air pressure switch, water pumps are activated and deactivated based on the set points.

Air Pressure Switches Informational Video

 
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