Rice Lake Counting Scales - IQ6500 Installation and Operation Manual - Manual (Page 14)

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1. Determine the unit weight by the normal sampling procedure.
2. If the initial sample fits the recompute criteria, then an additional group of parts, usually one to three
but up to eight times the initial sample size, may be placed onto the platform. Any number of parts
will suffice if the recompute light remains on. If the light goes out, remove some parts until the light
is on again.
3. After placing the additional parts onto the platform, press PIECES. The scale recomputes the average
unit weight based on the total sample.
This procedure may be repeated by adding more parts (within the recompute ranges) up to the limit of scale
capacity.
Note:
The precision of the recompute range is determined by a formula which incorporates the initial sample piece
weight, sensitivity, and statistical error correlation factors. The recomputation function cannot be used for
parts with very small unit weights.
4.1.3 Entering a Known Unit Weight
A known unit weight can be entered directly through the keypad using the numeric and decimal keys and then
completed by pressing UNIT WEIGHT. To reset the unit weight to zero, press 0 followed by UNIT
WEIGHT.
4.1.4 Using the IQ6500 Dual Scale
The functionality of the IQ6500 dual scale is apparent when determining unit weights. The intention is to
perform sample weighing on the small platter because its 1.0 or 2.5 lb. capacity obtains a very accurate per
piece weight. You can then use the SCALE/1.2 key to transfer to the large platform and perform bulk weigh-
ing based on the sample obtained from the small platform. Note that the sample does not accumulate into the
bulk, and you can use either platform to sample and count.
4.2 Parts Counting
Once the unit weight has been developed by any of the methods in Section 4.1, the bulk quantity may be
counted by one of the following procedures.
4.2.1 Counting Parts on the Scale Platform
After the unit weight is determined, additional parts may be placed onto the platform, and the correct weight
and quantity will be displayed. The original sample may be left on the scale, and the displayed weight and
quantity will be the total.
4.2.2 Counting Parts into a Container
Place the empty container onto the platform. Press TARE to tare off the weight of the container. As parts are
added into the container, the Quantity display shows the parts count.
4.2.3 Counting Parts in a Pre-Filled Container
If the weight of the container is known, the following procedure can be used to count the number of parts in
the container:
1. Placed filled container on platform, then press TARE.
2. Remove a 10-piece sample from the container then press PIECES. To use a sample size other than
10, key in the number of parts then press PIECES.
3. Key in the container weight and press TARE. The Quantity display will show the number of parts
remaining in the container.