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Azhar Hasan
Politeknik Negeri Lhokseumawe
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Mechanical Engineering

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Evaluasi Akurasi dan Penyimpangan SPAN pada Kalibrasi Temperatur Transmiter PT-100 (385) Standar ISO/IEC 17025 Azhar Hasan; Aidi Finawan; Rusli Rusli; Subhan Subhan
Jurnal Teknologi Vol 26, No 2 (2026): Agustus 2026
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v26i2.9117

Abstract

This study aims to evaluate the accuracy and SPAN deviation characteristics of a PT-100 (385) temperature transmitter calibration in accordance with the ISO/IEC 17025 standard. The calibration was performed using a Fluke 726 Precision Multifunction Calibrator as the reference instrument by simulating temperature signals over a range of 0 to 100°C. Measurements were conducted at five calibration points, corresponding to 0%, 25%, 50%, 75%, and 100% of the measurement range, with a standard output signal of 4 to 20 mA. The results indicated a maximum deviation of -0.75% at the Upper Range Value (URV), suggesting a reduction in transmitter sensitivity due to SPAN drift. Linearity analysis demonstrated a strong relationship between temperature input and current output, with a coefficient of determination approaching unity, although systematic deviations were observed at several calibration points. Based on the ISO/IEC 17025 acceptance criterion of ±0.5%, the transmitter did not fully satisfy the required accuracy specification. Therefore, recalibration, particularly adjustment of the SPAN parameter, is recommended to improve the reliability and accuracy of the measurement system.
Co-Authors Aidi Finawan Rusli Rusli Subhan Subhan