Verification of Measuring Electrical Instruments by Evaluating Measurement Uncertainty for Use in Simulated Calibration Laboratory

Abstract

This paper presents the verifying measurement method by evaluating measurement uncertainty for simulate calibration laboratory that specify laboratory conditions to have environmental conditions and other factors that are as close to a standard calibration room as possible. The reliable calibration of electrical measuring instruments is significant for agencies that lack the budget to send the electrical instruments to calibrate with external standards calibration laboratories (refer to ISO/IEC 17025: 2017). This research will validate the measuring instruments under calibration concerning the standard calibration process and evaluate the uncertainty according to the requirements to determine the maximum acceptable tolerance after calibration. This research can confirm the reliability of the measurement and provide evidence that the measuring instrument is working correctly and precisely according to the specified criteria without wasting a budget In sending standard equipment to be compared with outside agencies. In addition, obtaining information for teaching the measurement subject, making decisions about measuring precautions, customizing or refraining from using the measuring device, and budget planning for metrology work for use in other laboratories.