Wintriss AutoSet PAC 120 VAC, Руководство пользователя

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AutoSetPAC User Manual 1101600
Chapter 3 Initialization and Calibration 91
9. If you are calibrating an AutoSetPAC 4-Channel unit, cycle the press and compare AutoSetPAC
and calibration kit tonnage readings for the “Left Front” and “Right Front” strain links, then
repeat steps 4 through 7 for each channel. Refer to Table 3-5, page 88, for processor board labels
identifying the gain potentiometer and high/low gain jumper for each strain link.
10. When you have finished adjusting the AutoSetPAC so its tonnage readings match those displayed
on the calibration unit, press F3 (Show Calfactors) on the Calibration screen. The screen shown in
Figure 3-24 displays.
Figure 3-24.
Calibration Screen: Calfactors Display
As shown in Figure 3-24, the caption at the top of the screen changes from CALIBRATION to
CALFACTORS, and numbers between 40 and 960 are shown in the strain link channel displays.
These numbers are the “calfactors,” or calibration settings, for your AutoSetPAC.
11. Record the calfactor and high/low gain jumper setting for each strain link channel, two pairs of
settings for AutoSetPAC 2-Channel, four pairs of settings for AutoSetPAC 4-Channel.
If you need to replace a processor board, you can use these settings to calibrate the new board
without repeating the lengthy calibration process documented in this chapter. Simply access the
Calibration screen in SmartPAC (Calibration view is the default), move high/low gain jumpers to
the correct position, and adjust each potentiometer to the calfactor you have recorded.
12. Press RESET repeatedly to exit from the Calibration screen and return to the Main Initialization
Menu. Your AutoSetPAC is now ready to use.
Checking Linearity
After you calibrate your AutoSetPAC, you can check to see whether tonnage readings increase
proportionally with increases in load. For example, if AutoSetPAC reads 40 tons when 40 tons is
applied to the load cells, it should read 80 tons when 80 tons is applied to the load cells. The
proportional increase of tonnage readings with increasing load is called “linearity.” Linearity is a
good measure of how accurately tonnage is being recorded at different loads.