Temperature compensation50A.3 Graph of comparative errorIn the range of 1000 μS, the error of using a KCl temperature compensation on asolution that should be calculated as NaCl or 442 is shown in the chart below(Figure 9).To measure natural water-based solutions to 1%, users must alter the internaltemperature compensation to the more suitable, pre-loaded 442 values or stayclose to 25 ºC.A.4 Other solutionsA salt solution like sea water or liquid fertilizer acts like NaCl. The NaCl solutioncompensation provides the greatest accuracy for these solutions.Many solutions differ greatly from KCl, NaCl or 442. A sugar solution, a silicate, or acalcium salt at a high or low temperature may require a User value to providereadings close to the true compensated conductivity. This is determinedexperimentally.The chosen solution characteristic should closely match the sample being tested toachieve accuracy of ±1%.Figure 9
