BLH NOBEL G4-DT, Technical Manual

Page: 84 / 194

Technical Manual
4-2
If the weight indicator must be replaced, a table calibration of the replacement unit
can be performed, with recorded values from an earlier calibration.
To get the best accuracy, a deadweight calibration with known weights to at least
2/3 of the measuring capacity, should be performed.
All calibration parameters are found in the menus under ‘Scale X’ and
‘Scale X Calibration’. The parameters are described in chapter ‘Set-up’.
Note that calibration must be done separately for each scale in the instrument.
Actual gross weight and transducer signal is displayed when in menu ‘Scale X’ or
‘Scale X Calibration’.
Common parameters
For all calibration types, measurement unit and resolution for the weight value, and
the capacity for the scale must be specified. These parameters, among others, are
found in menu ‘Scale X’, see chapter ‘Set-up’. This section deals only with the
calibration parameters.
Measurement unit
This parameter defines the engineering unit used for the weight value.
The same engineering unit will also be used for example in the parameter values
‘Resolution’, ‘Capacity’, ‘Level’, and ‘Setpoint’.
Resolution
This parameter defines decimal point position and resolution in weight display.
The decimal point position selected here will be used in setting up, in the displayed
weight value and in the weight value sent to a printer or computer.
Resolution is understood to mean the smallest weight change presented.
Capacity
This parameter defines the nominal range of the scale. This is the capacity of the scale
and should be set to the maximum weight with which the scale is to be loaded. Even if
the scale (transducers) have larger capacity, this value should nevertheless be set so
that the weighing vessel does not become over full if the scale is loaded up to this
value. This parameter is used to calculate certain default values in the set-up and in
checking the maximum zero value (with ZERO key and zero-tracking).