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Introduction
Conversion Weights
Software
1.800.561.8187
Calibration in Different Pressure Units
The deadweight tester can be used to calibrate in different pressure units in either of two
methods.
A set of Conversion Weights can be supplied, marked in the required pressure unit, and
adjusted to the correct mass for use with the existing piston(s).
The set includes (where applicable) a replacement low-pressure weight carrier table, and
a replacement high-pressure weight carrier ring. These items are simply exchanged for
the original items when using the conversion weights. Calibration is carried out as
described above, with logical pressure increments throughout the operating range,
avoiding the need to perform pressure unit conversion calculations.
PressCal software is available for use with deadweight testers, and will allow users to
apply all necessary corrections (e.g. local gravity, temperature, pressure head, etc.) to
enhance the pressure measurement accuracy of the instrument.
It will allow calibration in any of 12 different pressure units, using the existing weight set.
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Chapter 4
4-1
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