HBM WE2108 Series, Справочное руководство

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WE2108
HBM A1632-2.0 en
6.3 Calibration with linearization
The standard calibration with zero and final value is sufficient for the majority
of scale applications (”Lin” = 0). Only if inadmissible errors occur in this
process, the signal should be linearized (”Lin” = 1/2). Linearization corrects
errors in scale attachments the output signal of which is not proportional to the
weight (e.g. due to mechanical transmission elements).
6.3.1 Selection of the calibration method with the ”Lin” parameter
”Lin”
parameter 0 1 2
Calibration steps: Zero value,
final value
!
)
Zero value,
2 calibration weights
Zero value,
3 calibration weights
Part load calibration
possible: yes no no
Recommended for: Standard application Attachments with
linearity errors
Attachments with
linearity errors
Correction of following
errors possible: Error proportional to
measured value
One maximum of the
error curve
Two maximum of the
error curve
Example:
(error of the scale out-
put signal according to
OIML)
Description in section
6.1.2 6.3.2 6.3.2
!
) The zero and final value calibration is already described in 6.1.2 ”Calibration (standard method)”.
6.3.2 Calibration steps for linearization (3 or 4 points)
First set the scale data:
Submenu Parameter Meaning Values
Func
unit Displayed dimensional unit 0: none
1: g
2: kg
3: t
4: lb
Point Places after the decimal
point of the display e.g. 3 for ”6,000 kg”
rES−1 Scale interval
CAP 1 Nominal range of the scale e.g. 6000 for ”6,000 kg”
Required additional functions can be activated corresponding to section 5.2.3
”Complete menu structure”.
Calibration is performed at several points, i.e. with unloaded scale as well as
after placing different calibration weights on the scale. The part weights used
must be entered in ascending order. A part load calibration is not possible, i.e.
the last weight must be equal to the scale nominal value. The characteristic
input with linearization replaces the zero and final value calibration, so this
does not need to be performed previously.