Pennsylvania 7500 Plus Programming manual

Quick Start Instructions
PENNSYLVANIA Model 7500+ BENCH COUNTING SCALE
Manufactured in USA by :
Pennsylvania Scale Company –1042 New Holland Avenue –Lancaster –Pennsylvania –17601 –USA
For complete technical and full directions, please see enclosed manual or contact us at www.pascale.com
Step 1
Step 2
Step 3
Step 4
Continue…
> PLACE
Empty container
on platform…
> PRESS
Sample
Set/Advance
- Deducts
weight of
container and
- Displays
‘ADD 10’*
> ADD
Samples all at
one time…
Quantity
added MUST
match
indicated
quantity.
> COUNT
Same Part:
Continue
counting; if
using a new
container, place
new container
on platform and
press ZERO at
any time
New Part:
Go to Step 1…
Any suitable
container can
be used.
*Press again
to advance
through 4
preset sample
sizes 10, 20,
50, 100 pieces
After ‘ – ‘
motion detect,
scale will
revert to
COUNT mode
Add pieces to
observe count.
It is not
necessary to
rezero the
platform if using
the SAME parts
and the SAME
container!
Explanation of buttons and their function:
ZERO –Rezeros the display for a new container weight; note the ‘ZERO’
indicator will illuminate to indicate zero condition.
SAMPLE SET –Initiates the counting sequence by (a.) re-zeroing the
platform and (b.) placing the scale in the ‘ADD’ mode for sampling.
UNITS –Toggles the display and LED legends through the 2 standard
weight units plus count: lbs -> kgs (or g) -> COUNT
PRINT –Causes information to be transferred by the digital interface to an
optional printer or external display.

-2-
Quick Start Instructions –Helpful Hints for Best Results
For best results, match the capacity of the scale to the relative size of
parts to be counted, i.e. the lower the capacity of the scale, the higher
the resolution and sensitivity.
For small items, choose a larger sample size. Generally a higher level
of accuracy can be obtained during the critical sampling mode with a
heavier sample.
SAMPLE UPDATE ™ - This feature, software controlled, refines the
average piece weight used for counting by refiguring based on a new
whole quantity. When active, the word ‘UPDATE’ will flash
momentarily in the display. If the rounding point is in a zone of
uncertainty (as it would be if the part weights are inconsistent) the
feature will not work.
The piece weights of similar parts may vary due to material density
differences, machine oil, manufacturing differences, lead lengths,
moisture content in plastic items, different vendor sources, etc. Since
weigh counting depends on similar piece weights, count accuracy may
be affected. To improve results, we recommend using a larger sample
quantity or using the Sample Update ™ feature. To use Sample
Update, after the initial sample, hand add small quantities of parts and
observe the word ‘UPDATE’ flashing in the display momentarily. The
refined average piece weight will reflect a larger sample quantity
without the necessity of hand counting a larger sample.
OLOLOL –If the scale is overloaded greater than 105% of the rated
capacity, it will display OLOLOL (overload!). Remove items until a
value is displayed and count the total in two drafts. While very rugged,
the load cell weight sensor can be damaged if overloaded or abused.
Use reasonable care to prevent damage to the load cell.
It is OK if items are larger than the platform; keep the load centered as
much as possible.
To fill a container, bowl, carton, or other vessel press ‘ZERO’ to rezero
the display and fill… it is not necessary to resample of continuing to
count the same parts.
Environmental factors (vibration, air currents, motion) can cause the
display to appear unstable. Pay attention to extra environmental
influences.