Kistler-Morse Weigh II, Installation And Operation Manual

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Chapter 6. Calibration
6-1
Chapter 6. Calibration
Introduction
The Cal Menu is used to set up and calibrate
the Weigh II with the sensors wired to the
Weigh II (for example, L-Cells, Microcells,
Load Stand II, Load Disc II, and Load Link).
This chapter covers the functions in the
Cal
Menu. Explanations of each of the functions
are provided. Additionally, detailed navigation
procedures through the menu tree are
provided for each type of calibration.
As shown in Figure 6-1, the Cal Menu has
three submenus, described below.
1. Auto — used to set the lo span, hi span,
and zero calibration values while moving
material into or out of the vessel.
2. Manual — used to manually set the scale
factor counts, scale factor weight, and
zero counts. Use manual calibration to
pre-calibrate the system, fine-tune the
calibration, or re-enter previous
calibration data.
3. Linear — used to set up and turn on and
off the linearization table. Use of this
function may be required if your vessel’s
structure responds non-linearly, but
consistently, to changes in load,
resulting in consistent, incorrect weight
readings after the system has been
correctly calibrated.
Auto
There are three different methods for perform-
ing automatic calibration:
• High-Accuracy Calibration
• Calibration by Adding a Known Quantity of
Material
• Calibration by Subtracting a Known
Quantity of Material
The latter two methods do not provide as high
accuracy calibration as the first method.
However, these lower accuracy calibrations
can be later refined to increase the accuracy
(see the topic
Refining the Calibration by
Setting Zero in this section).
Note
See Appendix H, Error Messages, for
an explanation of error messages you
may encounter while performing an
Auto Calibration.
Auto Manual Linear
Cal
On
Off
Set
ScfCnt
ScfWgt
Zero_Cnt
Disply
Reset
LoSpan
HiSpan
Zero_Cal
Disply
Reset
Figure 6-1. The Calibration Menu Tree