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New Coating Thickness Gauge


The standard deviation of the amount of standard equipment (repeatability) random errors of measurement device for measuring the value of the impact of the description of the degree of dispersion measurements, is characterized by the standard deviation s. Based on a measured value,[link widoczny dla zalogowanych], regardless of what shape the distribution, with the measured increase in the number, the arithmetic mean of measured values more close to normal distribution. Therefore,[link widoczny dla zalogowanych], using only limited measurement data can estimate the repeatability of measurements can be used Bessel formula. S: (2) formula. s: standard deviation: (a collapse X) residuals, 1. Number of measurements (Option l0 times or so) be selected for short-term reproducibility and good stability when the measuring instruments. In the same device, different ranges given the scope to pick the measuring instruments, the repeatability test should take the appropriate point. Such as: electronic potentiometer with a standard test device test O ~ 200'CE dividing the potential difference of electronic timing, taking the temperature lO0C point corresponds to the potential value of the 6.317mV. Repeated measurements of 2.9 l0 times the total measurement uncertainty of the standard installation option of a good stability verification of measuring instruments, measured in this device a set of data, sending higher legal metrology institutes a set of measured data. The difference between the two sets of data were seized measurement apparatus does not exceed two-thirds of tolerance. Standard equipment is the measurement uncertainty analysis be verified. 2.10 Conclusion standard part of the complete report concludes with completing construction, should be noted that compliance with national standards established by measurement and verification procedures Verification System Information ● 39 ● measurement requirements, the total uncertainty and the device test data superior measurement results of the comparison test of the department whether the data were seized in two-thirds of tolerance range of measuring instruments. For example: The standard unit total uncertainty ≤ 0.25, repeat the error of ≤ 0.1, therefore,[link widoczny dla zalogowanych], the standard equipment found JJG139-83 \The following materials can be carried out a test machine (10N a 1MN) of the test. Part of the completed Appendix 2.11 (1) used in test procedures or national standards. (2) for the uncertainty of reproducibility and verification testing of the original records. (3) the device operating procedures. (4) device for three consecutive years of the approval certificate and the total uncertainty measure sectors of higher validation test certificate. 3 construction standard report writing Few Notes (1) construction of standard written report, should collect a good test of the professional rules and related error theory books. (2) The report shall be measured to write the profession. (3) The competent chief of construction should be carefully reviewed the standard report, highlighting the review of the total uncertainty of measurement instruments were seized should be less than one-third of tolerance, compared to measured test data with the higher authorities than the difference between the test data were seized apparatus for two-thirds. If that does not meet the above requirements,[link widoczny dla zalogowanych], should be re-tested data. Review of methods of operation and data processing for errors. Selected measuring instruments were seized indication whether the stability of the major measuring standard device Accuracy measurement standards compliance requirements. (4) completion of construction of standard report writing. The measurement should be written neatly and formally marked in the copy staff report. (5) Appendix information should be filed together with the construction of standard reports, for safekeeping (custody of a copy of cross-professional group.) (Q 92-11 understand the manuscript of a o6) new coating thickness gauge Sheng Electronics Factory in Wuhan recent launch of DJH-c-type electrolytic coating thickness. The thickness of the main characteristics of the base material thickness of the test is not restricted, can chromium, copper, nickel and other 9 kinds of materials in a variety of coatings on any substrate (single or multi-layer) for fast and accurate measurements, the measurement range of 0.1 to 30, urn between. The instrument according to ISO international standards, has high accuracy,[link widoczny dla zalogowanych], good repeatability and stable performance and easy to use and so on. Lip

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