Calibration of Water Quality Sensors; Pulp and Paper Mills

Abstract

This thesis is a study of product prototype and provides an overview for the prospective user. The provided two different sensors were calibrated to check the accuracy of their measurements; results were also compared with the standards. Calibration was done using process water from integrated pulp/paper mill. The comparison of the performance of sensors was made with standard instruments commercial turbidity meter and spectrophotometer. The water sample was provided by the supervisor. Other standard instruments from Metropolia’s laboratory were used. The calibration curve method was applied during the result analysis as a mathematical tool. The curve was also analysed on the basis of the Beer-Lambert Law. The calibration experiment was carried out with the sensor, the turbidity meter and by manual suspended solid measurement. Comparing all three results, the sensor was found to be reliable enough to launch and reach users