Diagram Of A Pressure Gauge. Most pressure gauges make use of a bended tube. Process control instrumentation and process control systems design and documentation.
Diagram of a bourdon tube pressure gauge. Due to this current the filament gets heated and assumes a resistance which is measured using the bridge. Pressure gauge measures water pressure in pressure tank.
P g gauge pressure pa psi p s.
Now the pressure to be measured applied pressure is. On a pressure enthalpy diagram however the pressure is shown as absolute pressure psia the difference between the two is about 147 pounds per square inch or about 30 inches of mercury 2992 inches of mercury to be more precise. Pressure systems are designed to operate within a specific pressure range. This valve opens towards the boiler only and feeds.