Graco HFR - Page 70

Appendix B - ADM Setup Screens Overview
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4. Use the following formula to calculate the ∆ column
value.
5. Enter the calculated value in the
∆ column.
NOTE: Depending on the dispensed volume average,
the
∆ column may be either a positive or negative
value.
Volume/Weight Based Example:
A 75 cc/s shot is defined to dispense for 75 cc.
1. Dispense 5 shots into 5 separate containers.
2. Measure the dispensed amount and record the
data.
3. Calculate the average of the 5 shots.
Example 3 = 72.5cc
4. Use the following formula to calculate the
∆ column
value.
((Flow Rate x Time) - Average Volume)
Flow Rate
Example 1:
= 0.053 sec
Example 2:
((75cc/sec x 2sec) - 146cc)
75 cc/sec
= -0.08 sec
((75cc/sec x 2sec) - 156cc)
75 cc/sec
Example 1:
Example 2:
Shot
Example 3
Dispensed Volume
(cc)
1 72.2
2
72.4
3 72.6
4
72.8
5 72.5
(Requested Amount - Actual Amount)
Example 3:
(75cc - 72.5cc = 2.5cc)