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Pressure measurement is the measurement of an applied force by a fluid (liquid or gas) on a surface. Pressure is typically measured in units of force per unit of surface area. Many techniques have been developed for the measurement of pressure and vacuum.
- Gauge (instrument)
a cylindrical ring of steel whose inside diameter is...
- Pressure
For gases, pressure is sometimes measured not as an absolute...
- Gauge (instrument)
For gases, pressure is sometimes measured not as an absolute pressure, but relative to atmospheric pressure; such measurements are called gauge pressure. An example of this is the air pressure in an automobile tire, which might be said to be "220 kPa (32 psi)", but is actually 220 kPa (32 psi) above atmospheric pressure. Since atmospheric ...
Gauge pressure is the pressure relative to atmospheric pressure. Absolute pressure is the sum of gauge pressure and atmospheric pressure. Aneroid gauge measures pressure using a bellows-and-spring arrangement connected to the pointer of a calibrated scale.
a cylindrical ring of steel whose inside diameter is finished to gauge tolerance and is used for checking the external diameter of a cylindrical object. Strain gauge. a device used to measure the strain of an object. Thread pitch gauge, also called a threading gauge, pitch gauge, or screw gauge.
The gauge pressure is defined as the difference between an absolute pressure (P abs) and the prevailing atmospheric pressure (P amb). It is denoted with the subscript “e”: P e and is calculated as follows: P e = P abs – P amb. Absolute vs gauge pressure measurement.
pressure gauge, instrument for measuring the condition of a fluid (liquid or gas) that is specified by the force that the fluid would exert, when at rest, on a unit area, such as pounds per square inch or newtons per square centimetre.
A manometer is a device that is able to measure the pressure of a medium (a liquid, or a gas), it is also used to check the pressure of cylinder but it can only check the inner pressure not outer. In most cases, the relative pressure will be measured.
