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CHAPTER 5 : PRESSURE MEASUREMENT - Coggle Diagram
CHAPTER 5 : PRESSURE MEASUREMENT
PRESSURE MEASURING SYSTEM
GRAVITATIONAL TYPE
MANOMETER
SIMPLEST DEVICE FOR MEASURING STATIC PRESSURE
NON- CORROSIVE, LOW VISCOSITY, NEGLIGIBLE SURFACE TENSION
:
ELASTIC TYPE
BOURDON TUBE
WHEN PRESSURE APPLIED THE ELASTIC ELEMENTS WILL GET DEFORMED
DEFORMATION : MECHANICALLY OR ELECTRICALLY
LOW PRESSURE (VACUUM)
UNIT TORR AND MICRON
ONE TORR IS A PRESSURE EQUIVALENT OF 1MM OF HG WHILE 1MICRON IS 10X-3 TORR
MCLEOD GAUGE
is a scientific instrument used to measure very low pressures, down to 10⁻⁶ Torr
THERMAL CONDUCTIVITY GAUGE OR PIRANI GAUGE
used for the measurement of the pressures in vacuum systems. It was invented in 1906 by Marcello Pirani
IONISATION GAUGE
The ion gauge works by ionising the gas molecules within the gauge volume. The ions are then collected on a thin wire, called the collector.
Knudsen Gauge
is a type of manometer that works with the interaction of particles with a surface. Particles that interact with a hotter or colder surface will exert a force on that surface.
HIGH PRESSURE
TO MEASURE PRESSURE ABOVE 1000 ATM
BASED ON ELECTRICAL RESISTANCE CHANGE WITH HYDROSTATIC PRESSURE TO ACCOMMODATE A BULK COMPRESSION EFFECT
LVDT
