Counting Mode (Pc) - A&D BM series Instruction Manual

Counting Mode (PC)

6.3.
This is the mode to determine the number of objects in a sample based on the standard sample
unit mass. The unit mass means an average mass of the samples. The smaller the variation in
the samples is, the more accurate the count will be. The balance is equipped with the Automatic
Counting Accuracy Improvement (ACAI) function to improve the counting accuracy.
Notes
Use samples with a unit mass of 1 mg or more for counting.
If the sample unit mass variable is too large, it may cause a counting error.
To improve the counting performance, use the ACAI function frequently or divide the
samples into several groups and count each group.
Selecting the counting mode
1 Press the
MODE
Storing a sample unit mass (Weighing input mode)
2 Press the
RANGE
3 Select the number of samples using the
It may be set to 10, 25, 50 or 100.
Note A greater number of samples will yield more accurate
counting result.
4 Place a container (tare) on the weighing pan, if necessary.
Press the
RE-ZERO
The number specified in Step 3 appears.
Example:
25 0
5 Place the number of samples specified on the pan.
In this example, 25 pieces.
6 Wait for the stabilization indicator to be displayed.
Press the
PRINT
Then the balance displays
with this unit mass. To improve the accuracy of the unit mass,
proceed to Step 8.
Notes
If the balance judges that the mass of the samples is too light
to acquire accurate weighing, it displays an error requiring the
addition of more samples to the specified number.
Example:
50 -
25 samples and press the
stored correctly, the balance proceeds to the counting mode.
If the balance judges that the mass of the samples is too light (under
0.0001g) and cannot be stored as the unit mass, it displays
The sample unit mass is stored in non-volatile memory, and
is maintained even if the AC adapter is removed.
Counting operation
7 Place the samples to be counted on the pan.
Read the result and remove the samples from the pan.
BM series
key to select the unit
key to enter the sample unit mass storing mode.
key to cancel the weight (tare).
is displayed if 25 is selected in Step 3.
key to calculate and store the unit mass.
and is set to count samples
25
appears, requiring 25 more samples. Add
key. When the unit mass is
PRINT
(counting mode).
key.
RANGE
.
lo
27
Weighing pan
Container
(tare)
25 samples
To Step 8 when using
the ACAI function.
Place samples
Counting result