þrýstingsmælar
A þrýstingsmælir, or pressure gauge, is an instrument used to measure the pressure of a fluid, typically a gas or liquid. These devices are essential in a wide range of applications, from industrial processes and scientific research to everyday household appliances. The fundamental principle behind most pressure gauges is that the pressure being measured exerts a force on a sensing element, which then deforms or moves. This deformation or movement is calibrated to indicate the corresponding pressure value on a scale.
There are several common types of þrýstingsmælar. Bourdon tube gauges are widely used and consist of a
The units of pressure measurement can vary depending on the context and region, including pascals (Pa), pounds