Thermal EMF characterization of a built-up scanner for fully automatic multifunction calibrator: DC voltage measurement in SNSU BSN

• Main Authors: Azzumar, Muhammad, Syahadi, Mohamad, Khairiyati, Lukluk, Munir, Miftahul, Sardjono, Hadi, Faisal, Agah, Perangin-angin, Windi Kurnia, Chotimah, Ashri Khusnul, Hapiddin, Asep, Ratnaningsih, Ratnaningsih, Boynawan, Ahmad Mohamad
• Format: Conference Proceeding
• Language: English
• Subjects: Calibration; Electrical measurement; Measurement methods; Multimeters; Scanners; Switching; Thermodynamic properties; Thermoelectricity
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0108855

In order to achieve fully automatic measurement of multifunction calibrator and digital multimeter using direct measurement method, SNSU BSN has built-up a low thermal scanner for switching automatically configuration between multifunction calibrator and digital multimeter terminal according to the set parameter and measurement point. The usage of switching system in dc voltage measurement can cause voltage offset, such as from the thermal emf of a particular switch. The thermal emf of scanner has been characterized by differential measurement method, and the comparison of thermal emf between using and without scanner has also been carried out in order to get the true thermal emf of scanner. The results of characterization show that the different thermal emfs between scanner and without are 0.02 µV in 1 V and 1.80 µV in 10 V. By comparing to CMCs of SNSU BSN in both source and meter, the thermal emf of scanner gives less significant effect to the dc voltage measurement.