Also one of the most often executed measurements. Various physical principles are used with pressure measurements that are usually distinguished according to the type of pressure conversion to the output signal of the sensor. Pressure gauges in industrial practice can be divided according to principle into hydrostatic, deformational, piston, and electric pressure gauges.
Devices for pressure and underpressure measurement are commonly called manometers – underpressure gauges (vacuometers) and devices for the measurement of pressure differences are called differential pressure gauges, devices for measuring barometric pressure are called barometers and devices used for measuring absolute pressure are called absolute pressure gauges. Another term is the so-called pressure sensor – a pressure gauge, which works as an automation element. The pressure converter has a very similar significance as pressure sensor, it is an electronic device designed to measure pressure, which is able to convert the measured pressure data through electric signals to other devices. When the function of the pressure converter or sensor is controlled by a microprocessor, the converter or sensor of pressure are called intelligent.
Pressure sensors |
Type of pressure sensor |
Possible use |
Hydrostatic pressure gauges |
U-pipe |
In laboratories, in metrological laboratories, accurate barometers |
Container |
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Micromanometer with a inclinable arm |
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Compression vacuometers |
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Force pressure gauges |
Bell, Piston |
Standard pressure gauges (pressure gauge for measuring tire inflation) |
Deformation pressure gauges |
Bourdon-tube, membrane, Corrugated |
Most common directly displaying practical pressure gauges. |
Box-type |
Aneroid for measuring barometric pressure |
|
Pressure sensor with electric output (electromechanic pressure gauges) |
Potentiometer, Induction, Optical |
As a supplement of deformation manometers |
Capacity, Tensometric |
Most used sensors in modern converters of pressure, practical and laboratorial devices |
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Resonating |
Belongs to the most accurate pressure gauges, practical and laboratorial devices |
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Piezoelectric |
Measuring fast overpressure processes and pulsations |
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Electric pressure gauges for extreme pressures |
Resistance |
Measuring great overpressures |
Heat conductive |
Measuring great vacuum |
|
Ionizing |
Measuring extreme vacuum |