RADWAG MAS 1. Y, User Manual

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20.4. Liquids Density Determination
In order to determine density of liquid first determine sinker’s density in the air, next in the
liquid. The density of liquid is calculated according to the following formula:
d
V
B A
+
−
=
ρ
ρ
- liquid density
A - sinker mass measured in the air
B - sinker mass measured in water
V - sinker volume
d - air density ( max 0.001 g/cm
3
)
Install the density determination kit, and enter sinker’s volume to balance’s memory.
•
Press < Liquid density> button.
•
A respective menu is displayed, using it press < Sinker’s volume> button and
enter sinker’s volume value, take it from the sinker’s hanger.
•
Process of liquid density determination begins.
Procedure:
1. Install density determination kit.
2. In order to record density value for a particular product in products database, go to
<Settings> menu, set <Assign density to product> parameter and press <Product>
quick access button to make the product active.
3. Press < START> button.
4. Follow the displayed commands.
5. Carry out measurement in the air, wait for a stable measurement result and press
< > button.
6. Carry out measurement in the tested liquid, wait for a stable measurement result and
press < > button.
7. Density result is displayed.
8. Press < > button to complete the procedure.
CAUTION:
Press
< > button to start new density determination process with the same settings.
20.5. Air Density
< > Air density value is one of numerous data required for calculation of measurement
result correction, which correction is an effect of air BUOYANCY compensation. Another
value required for the calculation is weighed sample density. The function of air density
determination is enabled only in balances with reading unit lower than d=1mg.
Determining density of air requires use of a dedicated set of mass standards (additional
equipment), specific for a given balance model.