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Calibration is one area in measurement where our country is still in theprocess of improvement. The absence of confirmed approaches and actions foridentifying the features of calibration baths by numerous laboratoriesdisallowed them to assess more the finest measurement ability and develop theiraccurateness. In recent advances in technology, there is now a way of providingthe best measurement capability in temperature calibration by providingvalidated methods in characterizing calibration baths that contributes to theuncertainty of measurement of the calibrated thermometer and is thereforeimportant to measure the extent of its contribution to the final uncertainty.This study adapted the process from obtainable and current methods. PlatinumResistance Thermometer (PRT-Isotech) and Standard Platinum ResistanceThermometer (SPRT-Hart) which are interfaced to Precision Digital Multimeterswere used for measurements. Quite a few measurements were made at varying timedurations implemented on several known positions in an orderly measurement formwhich enclosed the whole workspace. The uniformities and stabilities of thecalibration bath were computed by getting the range of the Minimum Differencewith the Maximum Difference taken at every established temperature point.Outcomes of measurements exhibited that the calibration bath stability at everytemperature setting are steadier at lesser temperatures and have a tendency torise as the temperature approaches 250oC. The liquid bath was further unvaryingat lesser temperatures. The variances found were insignificantly distributedsince the Standard Deviation ranged only from 0.005 to 0.013.

international journal of emerging trends in engineering research

Characterization of High Temperature Calibration Bath through Stability  and Uniformity Tests with Data Acquisition using Standard Platinum Resistance  Thermometer and Precision Multimeter