Salter Brecknell 304BP - Manual (Page 10)

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CHAPTER 4: ADVANCED FEATURES AND OPERATION
4.1 PIECE COUNTING
This mode is used to indicate the number of pieces of an item you have placed on the
scale’s platform and is accessed by pressing the SAMPLE key. To ensure accuracy, the
parts you are counting must be consistent in weight.
The scale uses the sampling method to determine the average piece weight (APW) of the
items you wish to count. When sampling items, always count the parts in your hand and
place them on the platform all at once. If the APW of the items is too light or the total weight
of the sample is too light, accuracy cannot be guaranteed. You will get an error message,
but piece counting will still be allowed. Consult Table 4-1 or Table 4-2 for minimum piece
weights and sample weights.
1. If the items you will be counting require a container, you must first tare the container off by
pressing the ZERO key.
2. Press the SAMPLE key. The scale will display “5 0 pcs”. The scale is prompting you to place
five identical items on the platform.
NOTE: If you wish to change the sample number, simply press the SAMPLE key
repeatedly until the desired sample number appears. Available choices are 5, 10, 20,
50, 100, 200, and 500.
3. Place the sample items on the platform all at once. Once the scale stabilizes, the scale will
display “5 – pcs”.
4. Press the SAMPLE key to take the sample. If the sample meets the limits shown in Table 4-1
or Table 4-2, the scale will now display the number of pieces on the scale. If it does not, the
scale briefly displays an “Lo”, but still allows piece counting. If this occurs, you should use a
higher sample amount to achieve better piece count accuracy.
NOTE: If the scale displays an “Add” message, the unit weight of the items you wish to
count or total sample weight is too light for your scale to process at all.
MODEL Capacity / Graduation Minimum Piece Weight Minimum Sample Weight
304-BP-300 300x 0.01 g 0.008 g 0.25 g
304-BP -600 600x 0.02 g 0.016 g 0.5 g
304-BP-1500 1500x 0.05 g 0.04 g 1.25 g
304-BP-3000 3000x 0.1 g 0.08 g 2.5 g
TABLE 4-1: 304-BP Piece Counting Sampling Limits