Linearity Pack

A typical proceedure for linearity correction would be:

1) Standardise the salinometer with P-series Normal Standard Seawater (Salinity 35)

2) Measure the salinities for 38H-series, 30L-series and 10L-series Standard Seawaters

3) Calculate the difference between the measured value and the label value for each of these standards
i.e. measured value-label value = salinometer offset

4) Plot a graph of offset at each salinity ( a linearity curve).

5) Use the plotted offset data to correct salinity measurements away from salinity 35
e.g. at salinity 10 the offset is -0.004 in salinity, therefore add 0.004 to your measured values around 10.

NOTE:

Guildline Autosal accuracy specified as better than +/- 0.002 in salinity over the working range (2-42)

Guildline Portasal accuracy specified as better than +/- 0.003 in salinity over the working range (2-42)

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