Measurement uncertainty evaluation of conductivity value in hot dip galvanizing degreasing solution by conductivity electrode method
The measurement uncertainty evaluation of the conductivity value in hot dip galvanizing degreasing solution using a T7 potentiometric titrator equipped with a conductivity module and electrodes was introduced.Based on the conductivity measurement method provided by Mettler,a mathematical model was established for the conductivity value and input quantity.Various factors that affect uncertainty were analyzed and identified,and the standard uncertainty of each component was evaluated.The relative combined uncertainty and expanded uncertainty were calculated.The results show that when the measured conductivity value of the hot dip galvanizing degreasing solution was 35.54 mS/cm with inclusion factor k=2,the expanded uncertainty was 0.36 mS/cm.
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