Magazine | Issue 1 2025 5 YEARS OF OMICRON CALIBRATIONS We are celebrating 5 years of OMICRON Calibrations, our ISO/IEC 17025 accredited calibration lab for electrical measurands, partial discharge, frequency, and current transformer analyzers. › New calibration services available for PD linearity according to IEC 60270 for MPD 600 and MPD 800 (including system calibration). › New calibration services are also available for CPC 100 › We offer the best worldwide calibration services for OMICRON products. After more than two years of traveling, including several flights and road trips and the intense usage of 14 worldwide NMIs, the measurement results remained accurate and extremely close to the initial values. The specified tolerances were easily met. Remarkably, our results were almost identical to VTT MIKES’ reference results. We already knew our calibrators were reliable and stable, but now, an international ring comparison proved our PD measurements were also correct. The combination of correct results with long-term stability and robustness made our PD calibrators a resounding success. In fact, they were so convincing that one of the NMI participants even bought two CAL 542 calibrators! Travelling references observed by the pilot laboratory during repeated calibrations showed no significant drift. Nov 2021 Nov 2022 Aug 2023 Nominal charge [pC] Nominal charge [pC] Relative error from nominal B 1 10 0 20 50 100 5 1.2% 0.8% 0.4% 0.0% –0.4% C 10 100 20 200 500 1,000 50 1.0% 0.5% 0.0% –0.5% –1.0% –1.5% 1.5% D 100 500 –100 1,000 –1,000 2,000 5,000 10,000 –10,000 200 1.0% 0.5% 0.0% –0.5% –1.0% –1.5% 1.5% A 2.0% 1.0% 0.0% –1.0% –2.0% 0.1 1 –0.1 –1 0.2 2 5 10 0.5 –10 49
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