Rice Lake Counterpart Configurable Counting Indicator - User Manual Rev. E - Version 2.5 - Manual (Page 66)

60 Counterpart Counting Scale Indicator
5.3 Toggling Between Gross and Net
To toggle between net and gross weight, a tare value must be entered into the scale. See Section 5.2 to enter a tare
value.
After a tare value is entered into the scale, items placed on the scale will cause the Net annunciator to illuminate
and allow toggling between net weight and gross weight. For example:
1. Place 0.5 lb weight on the scale and then press TARE . The weight display should show 0.000 lb.
2. Place another 0.5 lb weight on the scale. The scale weight display should show 0.500 and the Net
annunciator should be illuminated.
3. Press the GROSS/NET key. The weight display should show 1.000 GROSS WEIGHT , and the Net annunciator
will no longer be illuminated.
4. Press the GROSS/NET key. The weight display should show 0.500 and the Net weight annunciator should be
illuminated again.
5.4 Entering Unit Weights
Entering unit weights can be done either by sampling, as presented in Section 5.4.1, or by key entry as described in
Section 5.4.2.
Note
Note
EXTENT OF INSUFFICIENT SAMPLES controls unit weight sampling. The default setting for the INSFSMPLE is
0.1 percent.
SAMPLE QUANTITY determines the number of pieces the scale assumes are on the platter when you press
the SAMPLE key to calculate the unit weight. The default setting is 10 pieces.
XFRUNITWT sets whether the unit weight determined by sampling is automatically transferred from Scale 1 to
Scale 2. The default setting is AUTOMATIC.
UNIT WEIGHT BASE controls whether the unit weight is displayed per 1000 pieces or per 1 piece. The default
setting for this is 1000 pieces.
Unit Weight per 1000 Pieces vs. Unit Weight per 1 Piece
The scale’s internal microprocessor calculates unit weights to several decimal places. However, the scale display
generally can only show unit weight to a maximum of 8 characters (or 7 places and a decimal point). If this unit
weight is recorded from the scale display and entered by key entry, this can introduce errors in the unit weight and
consequently in the counts. This error increases as the unit weight of the parts being counted decreases.
Example: A sample of 10 zener diodes is placed on the scale. The unit weight is computed to be 0.000653642 lbs.
However, the scale has a 7 character display for unit weight (or 6 places after the decimal point — 0.000000) so the
scale can only display 0.000653 as the unit weight. If this unit weight were recorded and keyboard entered in future
counting operations, the resulting error would be:
0.000653642 - 0.000653 x 100
0.000653642
= 0.098%
( )
On the other hand, with entry of the unit weight as “weight per 1000 pieces” the decimal place is, in effect, moved
three places to the right, allowing 3 more decimal places of accuracy. In this example, the entry would be made as
0.653642 per 1000 pieces, eliminating the error.
As a practical note, entering unit weights per 1000 pieces also lessens the chances of entering the wrong number of
zeros when keying in weights with many leading zeros. Incorrect entry of unit weights is a common cause of
inaccurate counting.
You might want to use unit weight per 1 piece generally this case:
1. When working with other existing systems or procedures that are already set up to record unit weight per
piece such as (inventory systems or labeling requirements).