Types of pressure measurements

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Pressure sensors can be grouped as far as pressure ranges they measure, temperature scopes of activity, and above all the sort of pressure they measure. Pressure sensors are differently named by their motivation, yet a similar innovation might be utilized under various names.

Absolute pressure sensor

This sensor measures the pressure relative to perfect vacuum.

Gauge pressure sensor

This sensor gauges the pressure comparative with air pressure. A tire pressure check is a case of check pressure estimation; when it demonstrates zero, at that point the pressure it is estimating is equivalent to the surrounding pressure.

Vacuum pressure sensor

This term can cause perplexity. It might be utilized to portray a sensor that estimates pressures underneath environmental pressure, indicating the distinction between that low pressure and air pressure, yet it might likewise be utilized to depict a sensor that estimates supreme pressure comparative with a vacuum.

Differential pressure sensor

This sensor measures the difference between two pressures, one connected to each side of the sensor. Differential pressure sensors are used to measure many properties, such as pressure drops across oil filters or air filters, fluid levels (by comparing the pressure above and below the liquid) or flow rates (by measuring the change in pressure across a restriction). Technically speaking, most pressure sensors are really differential pressure sensors; for example a gauge pressure sensor is merely a differential pressure sensor in which one side is open to the ambient atmosphere.

Sealed pressure sensor

This sensor is similar to a gauge pressure sensor except that it measures pressure relative to some fixed pressure rather than the ambient atmospheric pressure (which varies according to the location and the weather).

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Pressure Application Examples

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Type	Definition	Application Examples
Gauge	Reference to atmospheric pressure.	Car Tyre Water Level Measurement Chamber Pressure Hydraulic Applications
Sealed	Referenced to a sealed chamber closed with atmospheric pressure (approximately 1bar).	For use in Aggressive Media Industrial Applications Washdown Environments Food and Beverage
Absolute	The reference is a vacuum (0bar or no pressure).	Barometric Weather Stations and Meteorological Applications
Differential	Measuring the difference between two pressure port readings.	Filter and Pump Monitoring Air Conditioner HVAC Heating Ventilation and Air Conditioning Clean Room Monitoring

What is Pressure Sensor?	Exhaust Gas Recirculation in automotive	air/tire pressure in automotive	Fishing – depth measurement and Fish Finding
Paint & Agriculture Sprayers	Compression	Refrigeration Equipment	Water Tank Level Measurement
Disposable Blood Pressure Sensor	Kidney Dialysis Equipments	Balloon Inflation	Respirator/Breath Monitoring