Ohaus Voyager Balances - Manual (Page 201)

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Balance modes
START/SAMPLE is highlighted.
Make sure a beaker with liquid is in position on the stand in the balance.
Press the >O/T< button to zero the balance reading.
Place solid on top of the bracket as shown and close the draft shield doors.
Weigh the solid (weight A) and press the Enter button. The display now
requests WEIGH IN LIQUID.
39.438
START/SAMPLE SETUP MAIN MENU
DENSITY - - D2
WEIGH IN AIR: 15.703 TEMP:25.0
WEIGH IN LIQ: 15.306 AUX D= 9.971
VOLUME: 0.40
GRAMS/CC STABLE
Sample Weighing in Air
Sample Weighing in Liquid
A typical final display is shown which indicates all of the parameters and
values.
Open the draft shield of the balance and place the solid in the Weighing Pan
on the Weigh Below Hook in the liquid as shown. Ensure that there are no
air bubbles on the solid to be weighed.
Close the draft shield doors and weigh the solid (buoyancy P) by pressing
the Enter button. The display indicates the density in grams/cc.
Successive samples may be taken simply by pressing Enter with the START
SAMPLE bar highlighted. If AUTO SAMPLE was selected previously, samples
can be taken as per the indication on the display.
6.9.3 Solid density determinations for items less dense than water
For density determination of solids with a density less than 1 g/CM 3 , the bottom of the Weigh Below Hook for solids
must be used as it holds the solid body below the surface of the auxiliary liquid. If the buoyancy of the solid is greater
than the weight of the Weigh Below Hook, the Weigh Below Hook must be weighted by placing an additional mass on
the submerged part of the Weigh Below Hook as shown.
Weigh the sample in air first as explained in the previous procedure.
After loading the additional mass, tare the balance and start the weighing
again. Wait until the balance has reached stability and note the displayed
weight P (buoyancy of the solid).
Buoyancy Sample Weighing
Sample
Mass