Ohaus Voyager Balances - Manual (Page 26)

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3.10 Differential Weighing (Cont.)
Procedure (Cont.)
First, the container is tared and stored, then the product
is intially weighed in the container and stored for each
sample. A name is given to the samples which is stored
in the balance. After all samples have been weighed and
entered, a summary table indicates the weight of the
containers and each sample.
After the samples have undergone a process such as
heating or cooling, the entire procedure is repeated
starting with sample number 1 and continued until all
samples have been completed. The balance then
displays a new table which indicates the tare weight of
the container, the initial weight of the product, the final
weight of the product and the difference weight. To enter
samples, proceed as follows:
Initial Weighing
• Press >O/T< button.
• Place container on pan, wait for stable indication,
then press Enter button. The display indicates the
container weight.
• Place the first sample in the container on the pan.
The display indicates the initial weight of the first
sample.
• Press Enter button, display changes to sample 2.
• Remove first sample and container from pan.
• Place container on pan for sample two, press Enter
button. The display indicates the container weight.
• Place the second sample in the container on the pan.
The display indicates the initial weight of the second
sample.
• Press Enter button, display changes to sample 3.
• Remove second sample and container from pan.
• Repeat the above procedure for all samples. The
example shown at left is for one sample.
When the last sample is placed on the balance, a sum-
mary display indicates the TARE WT and INITIAL WT.
• Using the arrow buttons, select CONTINUE or SAVE,
then enter Data File Name.
Final Weighing
When all of the samples have been removed and pro-
cessed externally, reenter Differential Weighing and
select RESUME. The final samples are weighed with
their containers one after another. When the last sample
is weighed on the balance, a final summary display is
shown. See example at bottom of the page. The final
summary indicates the TARE WT, INIT WT, FINAL WT
and DIFF (difference weight). This can be printed. The
RE-SAMPLE and EDIT selections on the displays allow
corrections to be made.
DIFF WEIGHING - - NAME -- SAMPLE 1
0% 100%
GRAMS STABLE
EDIT MAIN CONTRAST ENTER
19.09
INIT WT= 0.00
TARE WT= 19.09
Initial Weighing
Summary Page
# TARE WT INIT WT FINAL WT DIFF
RE-SAMPLE DELETE CONTINUE SAVE
1 19.09 304.93
2 19.09 306.17
3 19.10 307.28
Final Weighing
DIFF WEIGHING -- NAME -- SAMPLE 1
0% 100%
GRAMS STABLE
EDIT MAIN CONTRAST ENTER
306.17
INIT WT= 306.17
TARE WT= 19.09
DIFF WEIGHING -- NAME-- SAMPLE 1
0% 100%
GRAMS UNSTABLE
EDIT MAIN CONTRAST ENTER
TARE WT= 19.09 FINAL WT= 300.04
INIT WT= 304.93 DIFF WT = -4.89
300.04
DIFF WEIGHING -- NAME-- SAMPLE 2
0% 100%
GRAMS UNSTABLE
EDIT MAIN CONTRAST ENTER
TARE WT= 19.09 FINAL WT= 300.05
INIT WT= 306.17 DIFF WT = -6.12
300.05
Final Summary
# TARE WT INIT WT FINAL WT DIFF
RE-SAMPLE DELETE CONTRAST RETURN
1 19.09 304.93 300.04 -4.89
2 19.09 306.17 300.05 -6.12
3 19.10 307.28 300.03 -7.25
DIFF WEIGHING -- NAME-- SAMPLE 3
0% 100%
GRAMS UNSTABLE
EDIT MAIN CONTRAST ENTER
TARE WT= 19.10 FINAL WT= 300.03
INIT WT= 307.28 DIFF WT = -7.25
300.03