Kistler-Morse KM Weigh II - Manual (Page 45)

Chapter 6. Calibration
6-7
8. Use the keypad or the Up and Down Arrow
Keys to input a value that represents the
known quantity of material (usually zero) in
the vessel. Press the Enter Key to save
the value in memory. Setting Zero weight
[point (3) in
Figure 6-3] is now set. The display flashes
a message acknowledging your entry and
returns to:
The Weigh II automatically makes all of
the necessary corrections; however, the
entered values of Lo Span and Hi Span
weight remain in memory even though the
solid line of Figure 6-3 does not pass
through those two points. Those points are
used only to establish the slope of the line.
9. Press the Esc Key to go up through the
menu tree or press the Auto/Man Key to
return the display to vessel monitoring.
Displaying the Auto
Calibration Parameters
The second page of the Auto Cal Menu has a
display function. Accessing this menu allows
you to view the following calibration values
that have been entered or internally calcu-
lated for the selected vessel:
• Cnts/mV (digital counts per millivolt
of signal)
• 0mV cnts (number of digital counts
corresponding to 0 millivolts of signal)
• H_SPAN_W (entered hi span weight)
• L_SPAN_W (entered lo span weight)
• H_SPAN_C (hi span counts = number of
digital counts corresponding to the
hi span weight)
• L_SPAN_C (lo span counts = number of
digital counts corresponding to the
lo span weight)
• ZERO_WGT (entered zero calibration
weight if performed Zero_Cal;
otherwise, zero)
• ZERO_CNT (zero counts = number of
digital counts corresponding to the zero
calibration weight)
• SCF_WGT (scale factor weight
= hi span weight - lo span weight)
• SCF_CNT (scale factor counts
= hi span counts - lo span counts)
Follow this procedure to display the auto
calibration parameters.
1. While in the Auto Cal Menu, access the
second page by pressing the Menu Key
until the display shows:
2. Press the F3 Key to access Disply. The
display looks like this:
3. Press any key other than the Esc or Auto/
Man Key to cycle through the display
parameters.
4. Press the Esc Key to scroll up the menu
tree or press the Auto/Man Key to return
the display to vessel monitoring.
Resetting the Auto
Calibration Parameters
The third page of the Auto Cal Menu has a
reset function. Accessing this menu allows
you to reset the calibration values to the
factory-set default values, which are listed
below:
• Cnts/mV — dependent on Gain value (see
Chapter 7, Service). Value is 699.05 for the
default Gain of 2.
• 0mV cnts — 1,048,576
• H_SPAN_W ---
• L_SPAN_W ---
• H_SPAN_C ---
• L_SPAN_C ---
• ZERO_WGT — 0
• ZERO_CNT — 1,048,576
• SCF_WGT — 9,999
• SCF_CNT — 250,000
AUTO CAL MENU
Zero_Cal Disply
F1 F2 F3
AUTO CAL MENU
Zero_Cal Disply
F1 F2 F3
Cnts/mV: XXXX
0mV cnts YYYYYY
F1 F2 F3