GSE Scale Systems - 73
Chapter 6 Counting Mode Technical Reference Manual
Press <ENTER> or <SAMPLE>. The 574 then
calculates the piece weight of the sample parts.
Key in (or barcode scan) the tare weight of the container.
The displayed (negative) quantity then is the total
number of parts in the container.
RECOMMENDED SETUP
In order achieve optimum counting results, certain setup
parameter selections should be set. These parameters
and their recommended settings are specified below.
P112 Zero Track aperture:
Make sure the zero track aperture is not set larger than
the weight of parts that will be counted. If the smallest
parts to be counted are 0.01 #, and the displayed
increment P111 is 0.05#, make sure the zero track
aperture is set to less than 2/10 of a division ( 0.01
divided by 0.05 = 0.2).
P114 Motion Definition:
The definition for motion affects how much variation in
weight can be allowed when the piece weight is
calculated. Setting this as low as possible without
having constant motion is optimal. Normally a setting of
around 0.4 divisions will suffice.
P115 Motion Delay:
A delay of around one second normally works quite
well. A longer delay may be desired if a very large filter
selection is made.
P116 Filter:
The filter selection can be very instrumental in
optimizing the accuracy of the piece weight calculation.
GSE recommends a filter setting of 4 seconds. While
this will increase the time required to sample and count
parts, a significant increase in piece weight accuracy will
be achieved. If the environment has more than average
vibration an ever higher setting may be beneficial.
One of the AUTO-FILTER selections may prove to be
the best choice. This filter provides very extensive
averaging while the applied weight is stable yet responds
more quickly than a standard slow response filter when a
significant change in weight occurs. The auto-filter
selections are choices numbered 15 through 17 with
selection #17 being an 8 second response auto-filter.
P119 Linearization:
For optimum sampling results, it is strongly
recommended that a multipoint linearization calibration
be performed on your scale. The smallest calibration
weight should be near 0.1% of capacity. Subsequent
calibration weights will be dependent upon your
platform's performance and should be based upon the
occurrence of a difference between the displayed and
applied weight.
P162 Negative Tare:
Set this selection for "enabled". This will allow a tare to
be performed even if the gross weight is slightly less
than zero. This may occur if a container is not used.
P163 Tare Rounding:
Disable the tare rounding selection. If tare rounding
were enabled it would prevent the 574 from determining
the precise weight before the sample parts were added,
resulting in a possible source of error in the piece weight
calculation.
6.2 Front Panel Key Operation
(Counting Related)
All of the Model 574 front panel keys operate normally
for weighing modes.
<ZERO>
This key will zero the 574, and establish the current
signal from the weighing platform as a gross weight of
zero. When the <ZERO> is executed from the quantity
(Qty) mode, the 574 will remain in the quantity mode
and any existing tare weight will be cleared. If the
<ZERO> is executed from any of the other counting
modes, the current mode will be changed to the GROSS
mode.
<UNITS>
The only counting modes for which the <UNITS> key is
defined are the piece weight modes, APW and APW*K.
During these two modes the <UNITS> key will toggle
the units through the units as selected in setup modes
P151 through P154. In the other counting modes the
<UNITS> key is ignored.
SECTION - 6.1
NOTE:
The following range of parameters P180 thru P187
apply to the Model 574 and 570 Weighing and
Counting Instruments.
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