Salter Brecknell 750 Series - Manual (Page 27)

Page C-1
CHAPTER 6: CALIBRATION
6.1 CALIBRATION OVERVIEW
The indicator is calibrated by following the procedures embedded in F16 (Zero) and F17
(Span) of the Setup Menu. Each procedure enters a value into the indicator's non-volatile
memory - F16 the zero value (deadweight) and F17 the span value (test weight). The
minimum test weight that can be used is 1% of full-scale capacity. After the two
calibration procedures are executed successfully, you should record both calibration
values in Table 6-1 using the F18 View procedure.
In the unlikely event that either value is lost while in the field, the setup menu makes provisions for
re-entering these values via F19 and F20, thus eliminating the need for re-calibration with test
weights.
NOTE: This chapter assumes that the indicator is in Setup (“F”) Menu mode. If the indicator is not
in Setup Menu mode, refer to Chapter 3 for instructions.
6.2 ZERO CALIBRATION (F16)
1. While in the Setup mode, scroll to "F 16", then scroll down once using the ZERO key to enter zero
calibration menu. The display will momentarily show "C 0" followed by a value. This value is the
internal A/D count and can prove useful when trying to troubleshoot setup problems.
2. After making sure that there are no test weights on the platform, press the ZERO key again to zero
out the displayed value.
3. Press the NET/GROSS key to save the zero point value. The display will show "EndC0" momentarily,
then revert back up to F16. At this time, proceed to the F17 span calibration to complete indicator
calibration.
6.3 SPAN CALIBRATION (F17)
1. While in the Setup mode, scroll to "F 17", then scroll down once using the ZERO key to enter
span calibration menu.
11. The display will momentarily show "C 1" for the span calibration, followed by a value with one
flashing digit. This value will be zero with the Decimal Point parameter selected in F10. Place
the test weight on the weighing mechanism.
12. Use the four directional keys (shown in Figure 6-1 below) to adjust the displayed value to the
actual test weight value. Increase the flashing digit by pressing the UNITS key. Decrease the
flashing digit by pressing the ZERO key. Pressing the PRINT key or the TARE key will change
the position of the flashing digit.
SETUP MODE KEY FUNCTIONS
ZERO
GROSS
NET
TARE PRINT
SET
UNITS
Figure 6-1: Setup Menu Key Assignments