Deadweight with Mass Stack
Technical Data
Capacity: 200 N, 500 N, 1 kN, 2 kN, 5 kN, 10 kN, 20 kN, 50 kN, 100 kN
Measuring uncertainty: ± 2·10-5 for all steps
Force standard machine of the highest precision specially for the calibration of
force transfer standards and reference force transducers, and for research
and testing of load cells. Deadweight machines of this type are used to define
the force scale at national metrology institutes (NMI's) by forming the primary
standards. The forces are generated by mass disks. The standard mass stack
design is a sequential series. The arrangement of the mass disks in the stack
determines the possible force steps. The coupling of the mass disks to each
other utilises a coupling system patented by GTM. A sequential stack can have
up to four measuring ranges. Each measuring range can be divided into steps of
10 % each.
If a more flexible spacing of the force steps is required, a binary stack
with a substitute loading device is used. The substitute loading device maintains
the force constant during load changes while the rewquired mass disks are
exchanged. An exchange stack can be designed with up to 1000 force steps.
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