Pressure Gauge is a tool used to measure fluid pressure (gas or liquid) in a closed tube. The units of this pressure gauge are psi per square inch, psf (pound per square foot), mmHg (millimeter of mercury), inHg (inch of mercury), bar, or atm (atmosphere). Gas Pressure Measurements can be used in the context of monitoring air and gas pressure in compressors, vacuum equipment, process lines, and special tank applications such as medical gas tubes and fire extinguishers. In addition to visual indications, some pressure gauges are configured to provide electrical output of the indicated pressure and monitoring of other variables such as temperature.
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