Weighing Operations
11
14. The following indicators flash simultaneously: unit of measure,
0.00
weight value or the previously
entered upper limit value, over arrow (
#
), and
M
(see Figure 1-7 on page 5).
15. Press and release the
T
key once. With the exception of the least significant digit, the display stops
flashing, and indicates all zeros, or the last upper limit value entered.
16. Press and release the
T
key once. The flashing display changes by a value of one.
17. Continue to press and release the
T
key until the flashing display reads the value you desire.
18. Press and release the
F
key once. The value selected in step 17 above is set. The display stops flashing
and the next most significant digit begins to flash.
19. Repeat steps 17 and 18 as necessary until the display reads the value you desire as the upper limit value.
20. If you need to change a digit once it has been set, repeatedly press and release the
F
key until the value
you want to change is flashing. Then return to steps 17 and 18.
21. Once the balance reads the correct upper limit value, press and release the
P
key once. The entire display
flashes showing the value you have selected as the lower limit value.
22. Press and release the
P
key again. The display returns to the weighing mode showing a
0.00
value.
2.8.3
Weighing with the Comparator Function
Once the comparator function has been activated (see Section 2.7.1 on page 8) and upper and lower limit values
have been set (see Section 2.8 on page 9), use with the following steps to weigh with the comparator function:
1. Place a commodity on the weighing platform that is exactly equal to the lower limit value. The
ACCEPT
indicator should illuminate confirming that any sample
≥
the lower limit value is acceptable. If not,
return to Section 2.8.1 or 2.8.2 on page 10 to re-enter the lower limit value.
2. Place a commodity on the weighing platform that is exactly equal to the upper limit value. The
ACCEPT
indicator should illuminate confirming that any sample
≤
the upper limit value is acceptable. If not,
return to Section 2.8.1 or 2.8.2 on page 10 to re-enter the upper limit value.
3. Once the lower and upper limits are functioning correctly, any sample that is
≤
the upper limit value and
≥
the lower limit value is acceptable.
4. Remove the test sample from the platform.
5. If the balance does not show a
0.00
value, press and release the
T
key. The balance returns to a
0.00
value.
6. If applicable, place an empty container on the platform and press the
T
key. The balance returns to a
0.00
reading (see Section 2.4 on page 7)
7. Gently place the item to be weighed on the platform. The unit of measure indicator begins to flash
indicating the balance is registering the weight of the commodity. The displayed value begins to update.
When the unit of measure indicator ceases flashing, the balance is stable and displays the weight value
along with the appropriate
OVER
,
UNDER
or
ACCEPT
indicator illuminated.
2.8.4
Deactivating the Comparator Function
Use the following steps to deactivate the comparator function in the QB Series balance.
1. Press and hold the
F
key until the word
Func
is displayed.
2. Release the
F
key. The display changes to show
1.SET.1
.
3. Press and release the
F
key once. The display changes to read
2.SEL.2
. This indicates that the comparator
function is currently active.
4. Press and release the
T
key once. The display changes to read
2.SEL.1
. This indicates that the comparator
function is inactive. Any existing over/under parameters remain in memory, but are inactive.
5. Press and hold the
F
key for approximately four seconds. The display returns the conventional weighing
mode and the comparator function is inoperative.
Summary of Contents for QB Series
Page 1: ...42194 QB Series Precision Balance Operation Manual ...
Page 2: ......
