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 Posted: Sun 11:13, 05 Dec 2010 Post subject: true religion jeans Weight 100g Evaluation of Unce |
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Weight 100g Evaluation of Uncertainty
Standard uncertainty, \times repeated measurements, the measurement results shown in Table 2: Table 2 measurements 1.121.141.131.111.141.141.121.131.121.1211212 △ a zLnag) the experimental standard deviation of measurement results, which measure Repeatability standard uncertainty of :\Where: A number of measurements; an i-measurements of the mass difference; ~ measure of the average difference between the quality of the process. : 1.127rrg the degrees of freedom () = a 1 = 9. , \O01mg =- 0. O027mg_2) △ = _100.002z '(△ L): / (A a) zΣ (a △). f__L --- b ----- 7z a 1:0.0023: Lu = √ (1 .(+)= O.O0004mg estimates, \discriminating standard uncertainty of the actual Ud AT201 electronic balance scale value d = 0.0ling,[link widoczny dla zalogowanych], was evenly distributed k = √ 3 。()×=()×= 0.O0408mg estimate the relative uncertainty of Ud = 10 %,[link widoczny dla zalogowanych], the degree of freedom = 50 (4), the standard deviation of uncertainty contained in the error weight E test when weighing the balance due to release the tray weights depending on the location measurement process in two adjacent, standard weight and being measured weight difference between the indicated value of △, 1 ≠ △, 2, the difference of indication that the error caused by the unbalanced load. \-AI2l a = 5d = 0.05mg then E:: = 0.02887mg estimated relative uncertainty of random E = 10%, the degree of freedom yE = 50 (5) the introduction of the standard uncertainty of the balance components of women's fine = Rui =, / o.0106 +0.00004 +0.004082 +0.028872:0.0310 mg DOF: 4, - Uba A + + + cluster () yE =- O.0310400106400-0408002887 = 65.3 .. 0.00o064. .4 .. 4 ... - ten --- ten - ten - take = 1003.4 other error sources are negligible. 4 Summary of standard uncertainty (see Table 3) Table 35 Evaluation of combined standard uncertainty == ~ / .07962 + (1.42 ~ 10 a) +0.03102 = 0.0854mg effective degrees of freedom: Yeff \to = 5759 ..(.×). 0.O3104. ... - XI - ten - take the combined standard uncertainty of the effective degrees of freedom r wide O06 Evaluation of the expanded uncertainty U with 95% confidence probability taken , the effective degrees of freedom by a ∞, check t distribution table may k: t95: 1.960, the expanded uncertainty is: U95 = 95 (。。)×\0m = 100.00213g, U95 = 0.17mg, a O0 [1] \: Liupanshui testing the quality and technical supervision. Address: 553 000 Guizhou province Topography in Zhongshan Bayi 48. Wang Jue, Yu Qiu, the Liupanshui test the quality and technical supervision (Liupanshui 553,000). Received :2009 -07-10 (Continued from page 84) V = 100-0.O1 ± 0.014 The formula that was seized in 100my potential difference at the actual value of 99.990 at the revised use of the expanded uncertainty is 0.014,[link widoczny dla zalogowanych], if do not follow the nominal value 100my modified to use the expanded uncertainty of 0.014 +0. O1 = 0.024 obvious that such an increase of measurement uncertainty. Author: Mao Province, Li, male, engineer. work units : Baoji City of Measurement and Testing. Mailing address: 721000, Baoji City,[link widoczny dla zalogowanych], Shaanxi Province, Hongqi Road,[link widoczny dla zalogowanych], northbound victory. Received :2009 -07-26 XI
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