41
③ Numerate the reading of the densimeter.
CAUTION
The dobber of densimeter must rise
uprightly without depending on the
glass pipe.
2） Measuring the proportion
Use gravimeter to calculate the electrolyte proportion.
3） Conversion of the specific gravity
The specific gravity at the standard temperature of 30
0
C should be converted as follow:
D30= Dt + 0.0007( t - 30 )
Therein to：D30 ——the specific gravity at the standard temperature of 30
0
C
Dt ——the specific gravity at the temperature of t0C.
t ——the temperature of the distilled water during convert.
·The specific gravity referred in this book is measured all at the temperature of 30℃.
To Next Page
Loading...
