Vishay G4, Техническое руководство, Страница: 85 / 200

G4 Multi Channel Weighing Instrument
4-5
Zero Offset
For an installed scale this parameter shows the zero offset after zeroing, a value that
should not be edited.
For a scale that is not installed it is possible to enter the known weight of fixed
equipment on the scale.
Table calibration
Table calibration can be used to copy recorded values from a previous deadweight
calibration of the weighing equipment into a replacement instrument. This is performed
by entry of recorded weight values and corresponding transducer signal values into the
instrument. Calibration can be performed for up to 6 points.
The accuracy of the copying procedure is 0.005 %.
No of Cal. P
Only parameters for the selected number of calibration points will be displayed in
the menu. The number of calibration points can be changed during the calibration.
Value Cal. P1, Value Cal. P2 etc.
These parameters are used for entry of recorded weight values, expressed in
the measurement unit, from a previous deadweight calibration.
The instrument will display actual gross weight when the user attempts to store the
value (pressing enter button when ‘Value Cal. Px’ is selected). Pressing enter button a
second time stops the weight display and the ‘Value Cal. Px’ can be entered.
T.Signal P1, T.Signal P2 etc.
These parameters are used for entry of recorded transducer signal values for
corresponding calibration points.
Set Zero
Set zero is useful only when the scale installation is finished. By the digit keys this
value can be set to zero, for unloaded scale, or to the weight of the known load, for a
scale that is loaded.
The instrument will display actual gross weight when the user attempts to set zero
(pressing enter button when ‘Set Zero’ is selected). Pressing enter button a second
time stops the weight display and the ‘Set Zero’ value can be entered.
Zero offset
This parameter is used for entry of the recorded zero offset value from a previous
deadweight calibration.
If a zeroing has been performed with parameter ‘Set zero’ above, the value of
parameter ‘Zero offset’ need not be changed.
Deadweight calibration
This is normally the most accurate calibration type. The transducer signals are
measured and automatically stored when the scale is loaded with known weights.
Calibration can be performed in up to six calibration points, starting with the lowest,
the highest point, or any other order.
Calibration of the lowest point is normally performed with the scale unloaded.
If calibration in two points is used, the second point should be placed as high as
possible, the scale should be loaded with at least 2/3 of the ‘Capacity’.
By calibration in more than two points, the highest calibration point should be placed at,
or higher than, the highest load for which the scale is to be used, and the calibration
points should be evenly distributed in the measuring range.
No of Cal. P
This parameter defines the number of calibration points. Up to six points can be