American Weigh Scales (AWS) PN-201C - Manual (Page 8)

8
PN-Series Manual
3. OPERATION
3.1. Sample Weighing
1. Press TARE / ZERO to make the balance return to zero.
2. Load the sample onto the scale pan.
3. The weight is stable when g (depending on which weighing unit is active) appears on the display.
3.2. Weighing with a container
Sometimes it is necessary to weigh an object (such as a liquid) using a container. To display just the weight of
the contents (net weight) and not the whole combined weight (gross weight), the TARE button is used.
1. Place an empty container on the weighing pan.
2. Once the weight stabilizes, press the TARE / ZERO key briefly. The display will retun to zero.
3. Add the sample to the container.
4. The weight is stable when “o” appears in the top right corner of the display.
3.3. Unit Switching
This balance has 8 possible weighing units. They are gram (g), carat (ct), ounce (oz), troy ouce (oz), pound (lb),
pennyweight (dwt), grain (gn), and Newton (N). Follow these instructions to change the weighing unit:
1. Press the UNIT button.
2. The weighing unit will cycle between g, ct, oz, ozt, lb, dwt, gn, and N with each press of the button.
3.4. Parts Counting
With items of uniform weight (ie. all the pieces are of equal weight value) it is possible to use this scales parts
counting feature to quickly and accurately obtain a piece count. To use the parts counting feature, follow
these instructions:
1. Press the MODE key until the display shows “pcs” to indicate parts counting mode.
2. The display will show “10 pcs” to indicate that you should place a sample quantity of 10 pieces onto the
platform. You may change the sample size by pressing the “CAL” button. Possible sample sizes are 10, 20, 50,
100, 150, 200, 250, and 500.
3. Press MODE again once you have selected the sample quantity placed on the platform.
4. You can now add any number of pieces to the platform (or container) and the display will show a count.
5. To exit counting mode press the MODE key.
Notes: The larger the sample size used, the more accurate the count will be. Tare can be used in this mode.
The reference sample is not stored upon exiting parts counting mode.
3.5. Calibrating The Balance
The balance may need to be calibrated in certain situations such as:
Before weighing for the first time •
After the balance has not been used for some time •
If the balance location has changed •
If ambient temperatures have changed greatly •
1. Prepare the calibration weight (See Section 1.3 for required weight).
2. Clean the weighing pan and press TARE to re-zero the balance.