Vishay G4, Technical Manual, Page: 81 / 200

G4 Multi Channel Weighing Instrument
4-1
4. Calibration
General
When measuring with G4 Instrument, the transducer output signal, corresponding
to the transducer load, is converted to a weight value. The conversion is controlled
by several parameters with values defined during calibration of the instrument.
Some calibration types for the instrument can be performed without any transducers
connected.
The G4 Instrument supports three calibration types:
•
Data sheet calibration - entry of values from transducer data sheet(s).
•
Table calibration - entry of recorded values from a previous calibration.
•
Deadweight calibration - storing of measured transducer signals for
known weights.
Calibration can only be performed in menu:
‘Parameter set-up/Calibration/Scale n.’
A ‘Set-up code’ may be demanded. Note that the weighing result for the
calibrated scale may be temporarily incorrect during calibration.
Calibration starts as one calibration type is selected.
To ensure the best possible weighing results, the mechanical installation must be
carried out with great care. Fixed mechanical connections to the scale should be
avoided, or made as flexible as possible and perpendicular to the measuring direction.
If the scale has several transducers connected in parallel, they must have the same
rated load and impedance. If transducers and fixed supports are combined, the load
must be evenly distributed on all supports.
It is recommended to start with a data sheet calibration, which is easy to perform
and gives a fairly good accuracy so the installation can be tested.
Each transducer from Nobel Weighing Systems is delivered
with a detailed data and calibration sheet.