Avery Weigh-Tronix PC-905, User Instructions

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PC-905 Counting Scale User Instructions 13
3.7 Counting Using Bulk Sampling
3.7 Counting Using Bulk Sampling
Bulk sampling is an automated sampling method. You place all the items to
be sampled on the scale at the same time and the scale will automatically
calculate the piece weight and display the count, without any further action.
Follow these steps for bulk sampling.
If you have a container, place it on the scale and press the TARE key to tare
the container or key in a known tare weight and press the TARE key. This
can be done in count or weight mode.
1. In weight or count mode, repeatedly press the sample key until the
sample size you want is displayed or key in a sample size (up to
65,535) and press
SAMPLE . . .
Your display may show ZEroing briefly. This occurs if it takes time
for the scale to find the Zero Reference. If a zero reference cannot
be acquired within 10 seconds due to excessive vibration,
Abort
will be displayed. If this sampling error occurs, check to be sure the
scale is stable and start over at step #1. If all is OK, you will see the
following:
Important !
If there is no active piece weight,
the scale will not go into count
mode when you press the
COUNT/
WEIGHT key.
Add 5 is displayed. 5 is the default sample size. The minimum
sample size can be configured to be 1, 2, 5, 10, 25, 50 or 100. See
the PC-905 Service Manual.
2. Place 5 sample parts on the scale at the same time. . .
StAndbY is displayed while the unit computes the weight of the
sample and displays the count. If the scale determines that the
sample size meets the minimum accuracy requirement,
5 will be
displayed and you can skip to step 4.
If the scale determines the sample size does not meet the minimum
accuracy requirement, the display will prompt you to
Add XXX
more parts. When prompting you, Add will flash.
The number XXX is the result of the scale rounding up, to the next
available sample size, from an actual number of pieces it has
calculated are needed to meet the required accuracy. For example:
If the scale determines that six pieces are needed to be added for
the sample weight to meet the minimum for the required accuracy,
the display will show the next larger sample size, 10 in this
example, and the display will show
Add 10 .
When you press the SAMPLE key,
the PC-905 performs an autozero
operation. So, if you have an empty
container on the scale and press
the
SAMPLE key, the container
weight will be zeroed and when
you place the parts to be counted
on the scale, only the weight and
count of the parts will be shown.
3. Add the requested samples to those already on the scale at the same
time. . .
StAndbY is displayed while the scale updates the piece weight. If
the sample meets the minimum accuracy, the count will be
displayed.
4. Add the items you wish to count to the scale. . .
Total count is displayed.
5. Remove the parts from the scale and add more of the same parts to
continue counting.
Press the COUNT/WEIGHT key to
toggle between count and weight
mode.
6. To clear the piece weight and return to normal weighing mode, press
the
CLEAR key and then the PIECE WEIGHT key. . .
The scale returns to weight mode.