Hanna-instruments HI 4521 Manual de usuario descargar pdf (Pagina 24)

Delete Profile

To delete one of the existing profiles:

• Use or to select the

Profile

option.

• Press

and use or to highlight the

Delete Profile

option.

• Press

A list with all customised profiles will appear on

the screen.

• Use or to select the desired profile and press

• Press

to return to the previous menu.

Note: The saved profile will automatically become the current profile.

Load Profile

To load one profile:

• Use or to select the

Profile

option.

• Press

and use or to highlight the

Load Profile

option.

• Press

A list with all customised profiles will be displayed

on the screen.

• Use or to select the desired profile and press

confirm or

to exit without selecting.

PRACTICAL SALINITY SCALE (UNESCO 1978)PRACTICAL SALINITY SCALE (UNESCO 1978)

PRACTICAL SALINITY SCALE (UNESCO 1978)

According to the definition, salinity of a sample in psu (practical salinity units) is calculated using the

following formula:

where:

- coefficient;

(sample) - uncompensated conductivity at T °C;

C(35,15)= 42914 µS/cm - the corresponding conductivity of KCl solution containing a mass of 32.4356 g

KCl / 1 Kg solution;

- temperature compensation polynom

=0.008 b

=0.0005

=-0.1692 b

=-0.0056

=25.3851 b

=-0.0066

=14.0941 b

=-0.0375

=-7.0261 b

=0.0636

=2.7081 b

=-0.0144

=0.008

=0.0005

X=400R

Y=100R

f(T)=(T-15)/[1+0.0162(T-15)]

Note: 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.

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Hanna-instruments HI 4521 Manual de usuario Pagina 24

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