715 
Sear 
The various ratios are defined as follows: 
Symbol Equivalent Definitions 
Dig Oy 4 The ratio of the gauge read— 
ings for equal volumes at 
equal distnaces. 
Dd. ehet(DE S/O) The ratio of the gauge read— 
Me a Une ings for equal weightsat equal 
distances. 
W. (Ww, AW, ) The weight ratio for equal 
a sr gauge readings at equal dis- 
tances. ("equivalent weight"). 
V. (Vv, /V,) The volume ratio for equal 
me se ere: gauge readins at equal dis- 
tances. 
d (a,/d. ) The distance ratio for equal 
BY eet gauge readings from equal 
volumes. 
d (an /d®)= The distance ratio for equal 
DW 2/4 /D,W 
gauge readins from equal 
weights. 
Wy (W/W) y The weight ratio of charges of 
equal volume (density ratio). 
where 
gauge reading 
charge weight 
charge-to-gauge distance 
charge volume 
qasa0 
Ma Rie 
If it is assumed that the gauge readings follow the law 
Dee 
gh 
where m and n are constants determined by the properties of the diaphragm, 
conversions from one type of ratio to another are fairly simple. The equa— 
tions for conversion are as follows: 
1/m 
Dg = My yg “na = va 
: 1/n 1/n 
Sq Wa Any = Ova 
& Fes lf 
