Specifications

10 QB Series Operation Manual
2.8.1 Reference Sample Method
Use the following steps to establish upper and lower comparison limits in the QB Series balance using the
reference sample method.
1. Press and hold the
P key until the display reads L Set, then release the P key.
2. The following indicators flash simultaneously – unit of measure,
0.00 weight value or the previously
entered lower limit value, under arrow, and
M.
3. Place a commodity on the weighing platform that represents the minimum acceptable weight value.
4. Press and release the
F key once.
5. The display continues to flash showing the unit of measure, minimum acceptable weight value, under
arrow, and
M (see Figure 1-7 on page 5). Write down these values for future reference.
6. Press and release the
P key once.
7. The display momentarily indicates
H Set.
8. The following indicators then flash simultaneously: unit of measure,
0.00 weight value, over arrow (#)
and
M (see Figure 1-7 on page 5).
9. Place a commodity on the weighing platform that represents the maximum acceptable weight value.
10. Press and release the
F key once.
11. The display momentarily blanks, followed by a flashing display showing the unit of measure, maximum
acceptable weight value, over arrow and
M (see Figure 1-7 on page 5). Write down this value for future
reference.
12. Press and release the
P key once. The OVER indicator flashes and the weight display shows the value
used in step 9.
13. Remove the sample from the weighing platform. The display returns to a
0.00 value and the over arrow
(#) disappears.
2.8.2 Digital Reference Method
Use the following steps to establish upper and lower comparison limits in the QB Series balance using the digital
reference method.
1. Ensure that you have followed the instructions in Sections 2.7.1 and 2.7.2 on page 9, then continue
below.
2. Determine and write down the values you need to use as the lower limit and upper limit values.
3. The display shows a
0.00 reading and the arrows next to the display legends OVER, UNDER, and
ACCEPT flash continuously indicating that over and under limits need to be established. Continue with
Section 2.8.3 on page 11.
NOTE: If the OVER, UNDER, and ACCEPT arrows are not flashing one of two conditions exists. Either the
comparator function has not been turned on correctly (see Section 2.7.1 on page 8), or there are OVER
and UNDER comparison limits already programmed into the unit. Verify that the comparator function is
properly activated (see Section 2.7.1 on page 8). Continue with Section 2.8.4 on page 11.
4. Press and hold the P key until the display reads L Set, then release the P key.
5. The following indicators flash simultaneously: unit of measure,
0.00 weight value or the previously
entered lower limit value, under arrow, and M (see Figure 1-7 on page 5).
6. 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 lower limit value entered.
7. Press and release the
T key once. The flashing digit changes by a value of one.
8. Continue to press and release the
T key until the flashing digit reads the value you desire.
9. Press and release the
F key once. The value selected in step 8 above is set. The digit stops flashing and
the next most significant digit begins to flash.
10. Repeat steps 7 – 9 as necessary until the display reads the value you desire as the lower limit value.
11. 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 7 – 9.
12. Once the balance reads the correct lower limit value, press and release the
P key once. The entire display
flashes showing the value you have selected as the lower limit value.
13. Press and release the
P key again. The display momentarily reads H Set.