2 Sensors
2.2 Pressure Measuring Sensors

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.

Pressure Measuring Sensors

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

Micromanometer with a inclinable arm

Compression

vacuometers

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

Resonating

Belongs to the most accurate pressure gauges, practical and laboratorial devices

Piezoelectric

Measuring fast overpressure processes and pulsations

Electric pressure gauges for extreme pressures

Resistance

Measuring great overpressures

Heat conductive

Measuring great vacuum

Ionizing

Measuring extreme vacuum