KM SVS2000, Руководство по установке и эксплуатации, Страница: 43 / 89

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97-1129-01 Rev. D
note: Shifting from the dashed to the solid line in Figure 8 is accomplished by entering a Display value
Correction when the vessel contains a known quantity of material (usually none) at a later date. This procedure is
described in refining the Calibration with the Display value Correction in this section.
refining the Calibration with the Display value Correction
The Disp Val Correct Menu is used to allow the SVS2000 to establish a known live load. Disp Val Correct
translates the calibration line of Figure 8 from the dashed line to the solid line position. Entering a weight for Disp
val Correct establishes point (3) in the figure. This weight must be entered only when there is a known quantity of
material in the vessel (usually zero material, but it can be a known, non-zero quantity). Disp Val Correct is often
entered at some time after the initial installation and calibration of the SVS2000, when it is practical to empty the
vessel and refine the calibration.
Disp val Correct may be used to compensate for the following circumstances:
• The estimated weight used when performing a calibration by adding or subtracting a known quantity of
material is off by a greater margin than can be tolerated.
• The vessel was not completely empty at the start of a high-accuracy calibration procedure.
notes:
1. Disp Val Correct cannot ‘repair’ a calibration in which the known quantity added or subtracted was actually
incorrect, because the slope of the line is not affected by Disp Val Correct. If necessary, recalibrate.
2. If the known material weight is zero, you can also use the Zero Key while on the gross weight display in Run
mode to refine the calibration. See the Zero Tolerance section in this chapter.
Follow this procedure to refine the calibration by entering a Display value Correction:
1. If the SVS2000 is in Run Mode, press the ‘2’ Key, ‘1’ Key, and Enter Key to access the menu tree. The
display shows:
21 AuTO CAL
2. Press the enter key to access this menu. The display shows:
LO SPAn CAL
3. Press the Down Arrow key to proceed to the previous menu. The display shows:
DISP vAL COrreCT
4. Press the enter key to access the Disp val Correct menu. The display looks like this:
> 0 lbs
(Units are consistent with Disp Units.)
5. Use the numeric or 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. The display acknowledges your
entry and returns to:
DISP vAL COrreCT
6. The SVS2000 automatically makes all of the necessary corrections.
7. Press the Gross or net Key to return to Run Mode.