Scales - Models 410 and 520
— Operation & Maintenance
3-15
Scale Matching Example:
Original
SETUP# 148081
CAL# 48727
1 Trial
2 Trail
3 Trial
Scale B
30,000
30,580
28,000
Scale A
29,440
29,800
27,500
B ÷ A
1.020
1.026
1.018
1.020 + 1.026 + 1.018 = 3.064
3.064 ÷ 3 Trials = 1.021 CAL Multiplier
Orig. UM CAL# X CAL Multiplier = NEW UM CAL#
48727 X 1.021 = 49750
Scale Matching Example:
Original
SETUP#
CAL#
1 Trial
2 Trail
3 Trial
Scale B
Scale A
B ÷ A
"X" =
+
+
"X" ÷ 3 Trials = CAL Multiplier
Orig. UM CAL# X CAL Multiplier = NEW UM CAL#
X
=
Scale “Short Form” Set Up & Calibration
(continued)
Unverferth 410 Indicator
1. Adjust UM Indicator to Match Another Scale:
Sometimes two different scales are used to weigh the same load. When this is done, the weight
measured by each scale may not be the same. This can be caused by one or both of the two
scales being slightly out of calibration. This indicator has the ability to match any other scale,
even if that scale is uncalibrated.
To match your UNVERFERTH Scale (Scale A) to another scale (Scale B) you must determine the
Calibration Multiplier. To do this, place a load on Scale A (feed wagon, etc...) and write down
the weight displayed. Repeat several times to determine the average weight. Next, place the
same load on Scale B and again write down the weight displayed. Again, repeat several times
to determine the average weight. Then, use this formula to determine the Calibration Multiplier
for the UNVERFERTH’s “CAL” number:
It is important to use an average of several weights before calibrating the scale. As an example,
if the elevator scale consistently weighs 1% higher then the grain cart scale, you may want to
increase the grain cart scale calibration number by 1%.
You should not
modify your “SETUP” number. Only your “CAL” number.
“To change the Setup / Calibration Numbers” on the UNVERFERTH 410 Indicator, follow the in
-
structions found in the Indicator Operator’s Manual.