Hanna Instruments HI98192 - Page 12

12
According to the definition, salinity of a sample in PSU (practical salinity units) is calculated using
the following formula:
R
T
‑ coefficient;
C
T
(sample) ‑ uncompensated conductivity at T °C;
C(35;15)= 42.914 mS/cm ‑ the corresponding conductivity of KCl solution
containing a mass of 32.4356 g KCl/1 Kg solution;
r
T
‑ temperature compensation polynom
a
0
= 0.008 b
0
= 0.0005
a
1
= ‑0.1692 b
1
= ‑0.0056
a
2
= 25.3851 b
2
= ‑0.0066
a
3
= 14.0941 b
3
= ‑0.0375
a
4
= ‑7.0261 b
4
= 0.0636
a
5
= 2.7081 b
5
= ‑0.0144
c
0
= 0.008
c
1
= 0.0005
X = 400R
T
Y = 100R
T
f (T)= (T‑15)/[1+0.0162(T‑15)]
Notes: The formula can be applied for salinity values between 0 and 42 PSU.
The formula can be applied for temperatures between -2 °C and 35 °C.
OPERATIONAL GUIDE