Salter Brecknell 630 User Manual
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3.3.2 TARING AN ITEM OF UNKNOWN WEIGHT
To weigh an item in a container, the weight of that container must first be subtracted from the
overall weight to obtain an accurate weight reading. This is known as taring.
1. If necessary, press the Zero key to obtain a weight reading of zero.
2. Place the empty container on the scale’s platter and allow the weight indication to
stabilize.
3. Press the Tare key. The TARE light comes on and the scale displays a weight reading of
zero.
4. Place the material to be weighed in the container and allow the weight indication to
stabilize.
5. Read the weight shown on the display.
3.3.3 TARING AN ITEM OF KNOWN WEIGHT
If the weight of the container or object is known, you may enter this weight via the keyboard.
This value must be rounded to the nearest scale division. For example, on a 60 x 0.005 lb
scale, you must enter the tare weight value to the nearest 0.005 lb.
1. Using the numeric keys, key-in the known tare weight and press the Tare key. The display
shows minus weight and turns the TARE annunciator on.
2. Place the material to be weighed in the container and allow the weight indication to
stabilize.
3. Read the weight shown on the display.
3.3.4 CLEARING A TARE
1. To clear a tare, press the ZERO key at any time. The TARE annunciator disappears and
the gross weight is displayed.
3.3.5 PIECE COUNTING
This mode is used to indicate the number of pieces of an item you have placed on the scale’s
platform. 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 3-2 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 TARE key. The scale switches to TARE mode and sets the displayed weight to
zero.
2. Place the sample items on the platform all at once.
3. Using the numeric keys, key-in the number of items you have placed o the scale’s platter.