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 Wysłany: Sob 21:14, 11 Gru 2010 Temat postu: ugg boots günstig 0.3 standard dynamometer _3347 |
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0.3 standard dynamometer analysis of uncertainty
0.3. The error sources are the following five: 1. Degree in the given process, on a force standard machines introduced errors. According to Metrological Verification System on a force standard machines of the expanded uncertainty of ≤ 1 × 10_ \3 = 0.033% 2. Provided by JJG144-92, 0.3 standard dynamometer repeatability error of indication R ≤ 3 × 10,[link widoczny dla zalogowanych], the error range of the half-width (3 × 10) / 2, which introduced the standard uncertainty is: ::: 0. o87% √ 33. By JJG144-92 requirements. O. 3 standard dynamometer long-term stability of the indication of not more than ± o. 3%,[link widoczny dla zalogowanych], thus the introduction of the standard uncertainty is: the H7f, /, M = 3 × 10_ \,[link widoczny dla zalogowanych], for the first test point (not less than seven minutes degrees) relative error caused by (O.00] / O.750) × 1O0% A 0.13%, thus the standard uncertainty of the introduction: \a 0.13% / = 0.075% 5. According to rules of order, 0.3 dynamometer testing universal testing machine in the process temperature should not exceed ± 2 ℃. The resulting error of indication (0.000271 ℃) × (= 2 ℃) ± 0.054% of a. Thus the standard uncertainty of the introduction of \99% confidence probability of a household. Then the expanded uncertainty is: U a 3 \AC power for basic error in setting the course to pick, how to properly analyze and adjust the load power mesh to ensure that the eye of an ax pick suck worse Keywords Wong Jian Lan Ramie Ramie:! blue! in the pan to juku √ \the certification process. need to adjust the load power factor, fixed number of load power is divided into c0s,[link widoczny dla zalogowanych], sin, and cos0, sin0, and 0 in each corner of which represents a different phase. test, whether it is single-phase energy meter is running three-phase load balancing active or reactive energy funeral table, the number of load power hoarding c. s or n in the phase angle,[link widoczny dla zalogowanych], both refer to the same phase between the phase voltage and phase current phase difference. and when the load imbalance , then said with sin0 cos # or related components where the load power factor phase angle 0 is added to the same set of components on the phase difference between voltage and current.
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