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1. Clean the measuring cylinder.
Clean the inner wall of the measuring cylinder with a test tube
brush or rinse it with a solvent such as the acetone solution.
If using the solvent, ensure the measuring cylinder is
completely dry before use.
2. Dry the samples.
Generally, the powder should be tested in the received state. In
some cases, drying is required. If the powder is prone to
oxidation, drying should be conducted in the vacuum or inert
gas. If the powder contains volatile substances, drying is not
allowed. If drying is impossible, the test can be conducted
directly.
3. Weight and input the sample weight.
Weight the appropriate samples to be tested. Turn on the switch
(on the rear side of instrument) if the density meter, press the
‘weight' button on the screen, and then input the actual weight
of samples into the computer.
4. Put all the samples into the measuring cylinder.
Place all samples into the measuring cylinder of the measuring
cylinder assembly, ensuring the powder surface is located in a
horizontal state. Then insert the measuring cylinder assembly
into the vibration mechanism.
5. Complete vibration.
Adjust the vibration frequency by turning the speed regulator
knob (the black knob at the bottom right).
“Number
Settings”：Set
the number of times of vibration (input range: 0~99999999)
“Sample
Number”：The
description of the test sample does not affect the test results.
The printed result report automatically adds "1" after each
calculation. The time is the basis.
Press the "OK" button. Press the "Start" button to start
vibration, when the preset vibration cycles is completed, the
instrument will automatically stop vibrating. In practice, the
minimum vibration cycles (N) required to maintain the powder
volume stability can be determined. For similar powder, except
for the specific vibration cycles (no less than N) determined by
tests and acceptance, 2N cycles are sufficient. For metal
powders of various particle sizes, vibration for 3000 times can
achieve satisfactory results.
6. Read and input the volume.
If
the powder's surface is level after compaction, the value can be
read directly. If not, record the highest and lowest values,
then calculate the average to get the tap volume. Reserve the
result to one decimal place when reading the result. Input the
tap volume and press the OK button to save the data.
7.
Press the Calculate key to complete the calculation.
After the above steps are completed, press the "Calculate"
button. The computer will calculate the density according to the
formula
ρ=m/v
and display the calculation result.
8.
Print results.
After displaying the results, click the screen to view the data.
You can print one or more data sets to calculate the average. |
