Avery Weigh-Tronix ZQ375 Checkweigher, User Instructions

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26 ZQ375 Checkweigher User Instructions
Checkweighing applications
3 Checkweighing applications
The ZQ375 has five applications for different levels of checkweighing and specialty
checkweighing.
Sim375 Simple, quick checkweighing application. Fast and simple to set up.
Displays a ± deviation reading from the target weight set within the scale.
See
Sim375 application on page 31 .
Mid375 Mid-level checkweighing. This application uses weigh mode versus
deviation mode. It is fast and simple to set up and displays target weight in
gross or net weight. Target weight is setup by either the
TARGET key or
entered through the indicator keypad. See Mid375 application on page 33 .
Adv375 Advanced checkweighing. This is like Mid375 but adds a Product Look Up
(PLU) database. This allows you to quickly activate target weights and high
and low tolerances for up to 500 products from the PLU database.
Statistical packages like X-bar/R and Standard Deviation are also included
in this application. See
Adv375 application on page 38 .
Per375 Percent checkweighing allows the operator to accurately increase the
weight of a product by a set percentage of the starting weight. See
Per375
application on page 43 .
Grad375 This application categorizes weight within up to 10 bands or weight
windows. See
Grad375 application on page 46 .
Applications are enabled in a password protected menu. See the Service manual (PN
AWT35-500813 for the English version).
3.1 Checkweighing terminology
There are some terms you should understand when checkweighing.
Target The exact weight desired
Target-Hi Target weight plus the Tolerance-Hi
Target-Low Target weight minus the Tolerance-Low
Tolerance-Low Weight allowed under the target weight but still considered
acceptable
Tolerance-Hi Weight allowed over the target weight but still considered
acceptable
Sample Adds “Toler-Hi” and subtracts “Toler-Lo” from target weight for
over/accept/under ranges.
Example: Toler-Hi = 1.0 Toler-Lo = 2.0 Target = 4.0
“Target” – “Toler-Lo” = “Lower Acceptable Target Limit” or (4-2=2)
Therefore all weights below 2 are considered under weight.
“Target” + “Toler-Hi” = “Upper Acceptable Target Limit” or (4+1=5)
Therefore all weights above 5 are considered over weight.
This would mean all weights above 2 and below 5 would be
acceptable as being within target sample tolerances.