AIR COMPRESSOR PRESSURE SENSORS & SWITCHES FOR SALE. Buy air compressor pressure sensors & switches online for any air compressor manufacturer at the lowest prices Worldwide. We make it Quick, Easy and Simple! We export and sell air compressor pressure sensors & switches in Africa, Asia, Europe, Jordan, KSA, Middle East, Qatar, UAE & Dubai, United Kingdom (UK) & Great Britain (GB), USA. NPS Compressed Air Parts is a supplier of premium high-quality compressed air pressure sensors & switches. We are a worldwide distributor of air compressor Pressure Sensors & Switches and replacement air compressor parts. Find Non-OEM Compressed Air Pressure Sensors & Switches Parts & Products at our website. We offer replacement Air Compressor Pressure Sensors & Switches spare parts for all major air compressor brands and all models. Pressure Sensors & Switche replacement for ingersoll rand air compressors in Africa. Pressure Sensors & Switche replacement in Asia. Atlas copco air compressor Pressure Sensors & Switches in Europe. Ingersoll Rand air compressor Pressure Sensors & Switches in Jordan. New air compressor Pressure Sensors & Switches in KSA. Atlas copco air compressor Pressure Sensors & Switches in Middle East. Air compressor replacement Pressure Sensors & Switches in Qatar. Pressure Sensors & Switche replacement parts in UAE & Dubai. Compressed air Pressure Sensors & Switche spare parts in United Kingdom (UK) & Great Britain (GB). Pressure Sensors & Switches in USA. And any other country around the World. Pressure Sensors & Switche replacement for Atlas Copco air compressors. Ingersoll Rand air compressor Pressure Sensors & Switches. Kaeser replacement Pressure Sensors & Switches. Pressure Sensors & Switches for Holman compressed air systems. Hydrovane Pressure Sensors & Switche replacement. new Pressure Sensors & Switches for Wilkerson. compressed air Pressure Sensors & Switche replacement for ALMIG air compressors. Ingersoll Pressure Sensors & Switches. Atla Pressure Sensors & Switches spare parts. buy Kaeser air compressor Pressure Sensors & Switche replacement. We have a huge collection of different pressure sensors & switches for your specific air compressor. Shop online for pressure sensors & switches at the cheapest and best prices around.
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Air Compressor Pressure Sensors & Switches

NPS Compressed Air Parts® is a Worldwide distributor and supplier of Premium Non-OEM Air Compressor Pressure Sensors & Switches manufactured and designed specifically to fit your Industrial Air Compressor System in Europe, USA, Africa, Asia, Middle East and other countries worldwide.

NPS Compressed Air Parts® is your source for to find replacement Compressor Pressure Sensors & Switches to keep your air compressor machine running efficiently, effectively and operating at full capacity.

Air Compressor Pressure Switch

The pressure switch shuts down the motor and relieves air pressure in the pump and transfer tube when the air pressure in the tank reaches the kick-out pressure. As compressed air is used and the pressure level in the tank drops to the kick-in pressure, the pressure, the pressure switch restarts the motor automatically, without warning, and the pump resumes compressing air as normal.

In other terms, when the air pressure in the receiver tank reaches the factory-set limit, the pressure switch shuts down the motor. As compressed air is used and the pressure level in the tank drops to a pre-set level, the pressure switch restarts the motor and the compressor resumes pumping air as usual.

For more information on pressure switches that we have in stock, please contact NPS Compressed Air Parts today.

Air Compressor Pressure Sensor

Air Compressor Pressure Sensors are pressure-sensitive electrical sensing devices used to control the operation of an air compressor. The main function of the sensor is to start the Air Compressor when the pressure in its holding tank drops below a set low point and to stop it when the pressure reaches a set maximum. This allows the compressor to maintain a constant working charge in the system, an essential criteria for industries that are heavily reliant on compressed air. The Air Compressor pressure sensor is typically mounted on the compressor assembly or in another easily accessible location, with the Air Compressor control circuit wired through its internal contacts.

Air Compressor Pressure Sensors Explained



Typically, an Air Compressor pressure sensor is used to measure the pressure of fluids (gases or liquids).  Pressure is an expression of the force required to stop a fluid from expanding, and is usually stated in terms of force per unit area.  A pressure sensor generates an electrical signal relating to the pressure imposed.  Such a signal is normally digital or analogue, although optical, visual and auditory signals are also common.

Industrial Air Compressor pressure sensors, also referred to as pressure transducers, pressure transmitters, pressure indicators and pressure switches, normally have a diaphragm type design that uses strain gauges, which are either bonded to, or diffused into it, with the strain gauges acting as resistive elements.  Under the pressure-induced strain, the resistive values change.  In capacitive technology, the pressure diaphragm is a single plate of a capacitor that changes its value under pressure-induced displacement.




Air Compressor Pressure sensing using diaphragm technology measures the difference in pressure of the two sides of the diaphragm.  Depending on the relevant pressure, the terms ‘Absolute’ is used when the reference is vacuum; ‘Gauge’ is used where the reference is atmospheric pressure; and ‘Differential’ is used where the sensor has two ports for the measurement of two different pressures.

Air Compressor Pressure sensors are used in a wide variety of applications for control and monitoring purposes.  Pressure sensors can also be used to indirectly measure other variables such as fluid flow, speed, water level and altitude.

Air Compressor Pressure sensors vary considerably in their design, technology used, performance, application and cost.  World-wide, there are hundreds of different technologies used in pressure sensor designs and thousands of different suppliers of pressure sensors.







Certain types of Air Compressor pressure sensor are designed to measure dynamically and are able to capture very high speed changes in pressure.  Example applications here are in the measurement of combustion pressures in engine cylinders or gas turbines.  These sensors are normally manufactured using piezoelectric materials such as quartz.

Some Air Compressor pressure sensors operate using a binary method.  In this design, when pressure is applied to a pressure sensor, the sensor completes or breaks an electrical circuit.  These types of sensors are also referred to as pressure switches.

Air Compressor Pressure sensors can be classified in terms of the pressure range they are measuring, operating temperature range, or the type of pressure they are measuring.  In terms of pressure types, pressure sensors can be divided into several main categories:

Absolute Pressure Sensors
An absolute pressure sensor measures the pressure relative to perfect vacuum pressure (0 PSI or no pressure). Atmospheric pressure is 101.325 kPa (14.7 PSI) at sea level with reference to vacuum.


Gauge Pressure Sensors
A gauge pressure sensor is used in different applications because it can be calibrated to measure the pressure relative to a given atmospheric pressure at a given location. A tyre pressure gauge is an example of gauge pressure indication.


Vacuum Pressure Sensors
A vacuum pressure sensor is used to measure pressure less than the atmospheric pressure at a given location.


Differential Pressure Sensors
A differential pressure sensor or transmitter measures the difference between two or more pressures introduced as inputs to the sensing unit.  For example, measuring the pressure drop across an oil filter.  Differential pressure is also used to measure flow or level in pressurised vessels.


Sealed Pressure Sensors
A sealed pressure sensor is similar to the gauge pressure sensor, except that it has already been calibrated by the manufacturer to measure pressure relative to sea level pressure.





Technologies Used in Air Compressor Pressure Sensors



Strain Gauge Pressure Sensors
Strain gauge or foil gauge technology makes use of the changes in resistance that some materials experience due to change in its stretch or strain.  Here, the technology uses the change of conductivity of material when it experiences different pressures and calculates that difference, then maps it to the change of pressure.

A strain gauge is a long length of conductor arranged in a zigzag pattern on a membrane.  When it is stretched, its resistance increases.   Strain gauges are mounted in the same direction as the strain and often in fours to form a full 'Wheatstone Bridge'.  A pressure sensor can contain several similar strain gauge elements.








Fibre Optic Pressure Sensors 
This technology uses the properties of fibre optics to affect the light propagating in a fibre, such that it can be used to form sensors.  Pressure sensors can be made by using miniature fibre optic interferometers to sense nanometer-scale displacement of membranes.  Pressure can also be made to induce loss into a fibre to form intensity-based sensors.


Mechanical Deflection 
This technology uses the mechanical properties of a liquid to measure its pressure.  For example, the effect of pressure on a spring system and the changes of compression of a spring can be used to measure pressure.


Semiconductor Piezoresistive 
To measure pressure, this technology uses the change in conductivity of semiconductors due to the change in pressure.


Microelectromechanical Systems (MEMS)
Here, the technology combines microelectronics with miniature mechanical systems such as valves and gears, all on a single semiconductor chip using nanotechnology to measure pressure.


Vibrating Elements (e.g. silicon resonance)
To calculate the pressure, vibrating elements are used to gauge the change in vibration on a molecular level of the different material elements due to changes in pressure.


Variable Capacitance
This technology uses the change of capacitance due to change of the distance between the plates of a capacitor because of change in pressure to calculate the pressure.




Air Compressor Pressure Sensor Applications



Pressure Sensing
Pressure sensors are used in a wide variety of applications.  When used directly to measure pressure, applications include weather instrumentation, aerospace and defence, research and development, automotive and many other machinery or equipment that has pressure functionality implemented.


Potential uses of pressure sensors are hydraulic systems, water depth, pneumatics, marine, sewage, gas, medical, food and beverage processing, tank level/contents, HVAC systems, agricultural equipment, aerospace and chemicals.


Other special versions of pressure sensors are common, including high temperature pressure sensors, three-in-one pressure sensors, ATEX-certified pressure transducers, hygienic pressure sensors and field-adjustable pressure sensors.  Ceramic pressure sensor capsules, low cost foil strain gauge type pressure sensors, depth/level transmitters, differential pressure transmitter (wet/wet type and dry air/gas type) are other popular variations.


Flow Sensing
Here, pressure sensors utilise the Venturi Effect in order to measure the flow.  Differential pressure is measured between two segments of a Venturi tube that have a different aperture.  The pressure difference between the two segments is directly proportional to the flow rate through the Venturi tube.  A low pressure sensor is almost always required as the pressure difference is relatively small.


Altitude Sensing
This is useful in commercial and military aircraft, rockets, satellites and weather instrumentation.  These types of application all make use of the relationship between changes in pressure relative to the altitude.





NPS Compressed Air Parts has the most extensive selection of air compressor Pressure Sensors in the area, because we have been servicing compressor units across the whole Mid-East Region for almost 20 years.

For more information on pressure switches that we have in stock, please contact NPS Compressed Air Parts today.

We offer replacement air compressor pressure sensors & switches for all major manufacturers such as Atlas Copco, Ingersoll Rand, Kaeser, Holman, Hydrovane, Wilkerson, ALMIG, Ingersoll, Atlas, Kaeser Worldwide. Login to search online through all the different types of Air Compressor Pressure Sensors & Switches we carry around Europe, USA, Africa, Asia, Middle East.

We make it Easy to Shop online for Comressed Air Parts for your Air Compressor at the lowest prices in the market. As a worldwide distributor of Air Compressor Pressure Sensors & Switches , we export and sell air compressor Pressure Sensors & Switches in USA, United Kingdom (UK) & Great Britain (GB), UAE & Dubai, Qatar, Middle East, KSA, Jordan, Europe, Asia, Africa.

To learn more about the Products & Services NPS Compressed Air Parts® offers for your air compressor machine please Contact Us Today.


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Beside Air Compressor Pressure Sensors & Switches we also carry:

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NPS Compressed Air Parts® is a Worldwide Distributor & Supplier of Air Compressor Pressure Sensors & Switches

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