RADWAG MYA 5.3Y.F1 Microbalance - Manual (Page 70)

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20.1. Determining density of solid object
Before starting the procedure, it is necessary to determine parameters of the
process, such as:
− Type of liquid
o
Distilled water
o
Ethanol
o
Other liquid with determined density
− Liquid temperature
(required if used liquid is distilled water or ethanol)
− Liquid density
It is set automatically if liquid type Water or Ethanol is used and on
inserting liquid temperature. If used liquid is <Other> then it has to
be inserted manually.
The density of solids is calculated according to a formula:
o
B A
A
ρ ρ
−
=
ρ - density of a sample
A - sample’s mass measured in the air
B - sample mass measured in liquid
ρ
o
- liquid density
PROCEDURE
1. Assembly the density determination kit
2. Should the density value be saved in a product record of the database of
products, set parameter <Assign density to product> in <Settings> and
activate product using quick access key <Product>,
3. Press < Density of solids > soft key
4. A window with menu is opened, set appropriate values for fields: Standard
liquid, Temperature, Density of standard liquid,
5. Press < START > key
6. The balance is ready to start density determining process of solids.
7. Load a sample on the TOP pan of the density kit, and on stabilization of
measurement result press < > key,
8. Load the sample on the BOTTOM pan of the density kit which is immersed
in liquid, and on stabilization of measurement result press < > key,
9. The display indicates result of density determining process,
10. Press < > key to finish the procedure.
Caution:
Pressing < > key starts another density determining process with the same
settings.