Appendix a: liquid density – In-Situ Win-Situ 4 / Pocket-Situ 4 Operators Manual User Manual
Page 93
93
WIN-SITU 4.0 USER’S GUIDE
rev. 003 11/04
The conversion from PSI units to meters or feet of water requires several
conversion factors. One of these is the density (
ρ) of the aqueous solution
being monitored. Pure groundwater at 20°C has a density of 0.998 grams
per cubic centimeter (g/cm
3
).
Use the values in the table below for density if you do not otherwise know
it. However, since these data assume pure water, there is no accommo-
dation for other variables (such as salinity) which can affect your actual
water conditions. (Alternatively, you could compute it; see the following
procedure.)
Temp.
Density
Temp.
Density
Temp.
Density
(°C)
(g/cm
3
)
(°C)
(g/cm
3
)
(°C)
(g/cm
3
)
1
0.999900
11
0.999605
21
0.997992
2
0.999941
12
0.999498
22
0.997770
3
0.999965
13
0.999377
23
0.997538
4
0.999973
14
0.999244
24
0.997296
5
0.999965
15
0.999099
25
0.997044
6
0.999941
16
0.998943
26
0.996783
7
0.999902
17
0.998774
27
0.996512
8
0.999849
18
0.998595
28
0.996232
9
0.999781
19
0.998405
29
0.995944
10
0.999700
20
0.998203
30
0.995646
APPENDIX A:
LIQUID DENSITY