Dead-Weight Gauge
About the dead-weight gauge
The dead-weight gauge, is a null-reading
type of measuring instrument in which weights are added to the piston
platform until the piston is adjacent to a fixed reference mark, at
which time the downward force of the weights on top of the piston is
balanced by the pressure exerted by the fluid beneath the piston. The
fluid pressure is therefore calculated in terms of the weight added to
the platform and the known area of the piston.
The instrument offers the ability to
measure pressures to a high degree of accuracy but is inconvenient to
use. Its major application is as a reference instrument against which
other pressure measuring devices are calibrated. Various versions are
available which allow measurement of pressures up to 7000 bar.
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Pressure Measurements
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