N04 基础标准与通用方法 标准查询与下载



共找到 559 条与 基础标准与通用方法 相关的标准,共 38

Communication systems for and remote reading of meters - Part 3: Dedicated application layer; German version EN 13757-3:2013

ICS
33.200;35.100.70
CCS
N04
发布
2013-08
实施

Communication systems for and remote reading of meters - Part 3: dedicated application layer

ICS
33.200;35.100.70
CCS
N04
发布
2013-07-26
实施
2013-07-26

Electronic measuring instruments.Electromagnetic environment test method

ICS
17.100
CCS
N04
发布
2013-03-21
实施

4.1 Laboratories conducting routine testing have a continuing need to evaluate test result bias, to evaluate changes for improving the test process performance, or to validate the transfer of a test method to a new location or apparatus. In all situations it must be demonstrated that any bias or innovation will have negligible effect on test results for a characteristic of a material. This standard provides statistical methods to confirm that the mean test results from a testing process are equivalent to those from a reference standard or another testing process, where equivalence is defined as agreement within prescribed limits, termed equivalence limits. 4.1.1 The intra-laboratory applications in this practice include, but are not limited to, the following: (1) Evaluating the bias of a test method with respect to a certified reference material,(2) Evaluating bias due to a minor change in a test method procedure, (3) Qualifying new instruments, apparatus, or operators in a laboratory, and(4) Qualifying new sources of reagents or other materials used in the test procedure. 4.1.2 This practice also supports evaluating bias in a method transfer from a developing laboratory to a receiving laboratory. 4.2 This practice currently deals only with the equivalence of population means. In this standard, a population refers to a hypothetical set of test results arising from a stable testing process that measures a characteristic of a single material.Note 1—The equivalence concept can also apply to population parameters other than means, such as precision, stated as variances, standard deviations, or relative standard deviations (coefficients of variation), linearity, sensitivity, specificity, etc. 4.3 The data analysis for equivalence testing of population means in this practice uses a statistical methodology termed the “Two one-sided t-test” (TOST) procedure which shall be described in detail in this standard (see X1.1). The TOST procedure will be adapted to the type of objective and experiment design selected. 4.3.1 Historically, this procedure originated in the pharmaceutical industry for use in bioequivalence trials (1, 2),3 denoted as the Two One-Sided Test, and has since been adopted for other applications, particularly in testing and measurement applications (3, 4). 4.3.2 Th......

Standard Practice for Conducting Equivalence Testing in Laboratory Applications

ICS
03.120.30 (Application of statistical methods)
CCS
N04
发布
2013-01-01
实施

Practice for Conducting Equivalence Testing in Laboratory Applications

ICS
03.120.30
CCS
N04
发布
2013
实施

4.1 Relevance—This guide is intended to educate those in the intended audience on many aspects of laboratory informatics. Specifically, the guide may: 4.1.1 Help educate new users of laboratory informatics; 4.1.2 Help educate general audiences in laboratories and other organizations that use laboratory informatics; 4.1.3 Help educate instrument manufactures and producers of other commonly interfaced systems; 4.1.4 Provide standard terminology that can be used by laboratory informatics vendors and end users; 4.1.5 Establish a minimum set of requirements for primary laboratory informatics functions; 4.1.6 Provide guidance on the tasks performed and documentation created in the specification, evaluation, cost justification, implementation, project management, training, and documentation of laboratory informatics; and 4.1.7 Provide high-level guidance for the integration of laboratory informatics. 4.2 How Used—This guide is intended to be used by all stakeholders involved in any aspect of laboratory informatics implementation, use or maintenance. 4.2.1 It is intended to be used throughout the laboratory informatics life cycle by individuals or groups responsible for laboratory informatics including specification, build/configuration, validation, use, upgrades, retirement/decommissioning. 4.2.2 It is also intended to provide an example of a laboratory informatics functions checklist. 1.1 This guide helps describe the laboratory informatics landscape and covers issues commonly encountered at all stages in the life cycle of laboratory informatics from inception to retirement. It explains the evolution of laboratory informatics tools used in today’s laboratories such as Laboratory Information Management Systems (LIMS), Electronic Laboratory Notebooks (ELN), Scientific Data Management Systems (SDMS), and Chromatography Data Systems (CDS). It also covers the relationship (interactions) between these tools and the external systems in a given organization. The guide discusses supporting laboratory informatics tools and a wide variety of the issues commonly encountered at different stages in the life cycle. The sub-sections that follow describe details of scope of this document in specific areas. 1.2 High-Level Purpose—The purpose of this guide includes: (1) helping educate new users of laboratory informatics tools, (2) provide a standard terminology that can be used by different vendors and end users, (3) establish minimum requirements for laboratory informatics, (4) provide guidance for the specification, evaluation, cost justification, implementation, project management, training, and documentation of the systems, and (5) provide function checklist examples for laboratory informatics systems that can be adopted within the laboratory and integrated with the existing systems.

Standard Guide for Laboratory Informatics

ICS
35.240.80 (IT applications in health care technolo
CCS
N04
发布
2013
实施

5.1 ASTM regulations require precision statements in all test methods in terms of repeatability and reproducibility. This practice may be used in obtaining the needed information as simply as possible. This information may then be used to prepare a precision statement in accordance with Practice E177. 5.2 Test Method and Protocol—In this practice, the term “test method” is used both for the actual measurement process and for the written description of the process, while the term “protocol” is used for the directions given to the laboratories for conducting the ILS. 5.3 Observations, Test Determinations and Test Results: 5.3.1 A test method often has three distinct stages, the direct observation of dimensions or properties, the arithmetic combination of the observed values to obtain a test determination, and the arithmetic combination of a number of test determinations to obtain the test result of the test method. In the simplest of test methods a single direct observation is both the test determination and the test result. For example, the test method may require the measurement of the mass of a test specimen prepared in a prescribed way. Another test method may require the measurement of the area of the test specimen as well as the mass, and then direct that the mass be divided by the area to obtain the mass per unit area of the specimen. The whole process of measuring the mass and the area and calculating the mass per unit area is a test determination. If the test method specifies that only one test determination is to be made, then the test determination value is the test result of the test method. Some test methods require that several determinations be made and the values obtained be averaged or otherwise combined to obtain the test result of the test method. Averaging of several determinations is often used to reduce the effect of local variations of the property within the material. 5.3.2 In this practice, the term “test determination” is used both for the process and for the value obtained by the process, except when “test determination value” is needed for clarity. 5.3.3 The number of test determinations required for a test result should be specified in each individual test method. The number of test results required for an interlaboratory study of a test method is specified in the protocol of that study. 5.4 Test Specimens and Test Units—In this practice a test unit is the total quantity of material needed for obtaining a test result as specified by the test method. The portion of the test unit needed for obtaining a single test determination is called a test specimen. Usually a separate test specimen is required for each test determination. 5.5 Precision, Bias, and Accuracy of a Test Method: 5.5.1 When a test method is applied to a large number of portions of a material, that are as nearly alike as possible, the test results obtained nevertheless will not all have the same value. A measure of the degree of agreement among these test results describes the precision of the test ......

Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

ICS
19.020 (Test conditions and procedures in general)
CCS
N04
发布
2013
实施

5.1 Specimens tested using this standard, for example, duct silencers, are used to control sound propagation through ventilation ducts. The results gathered from testing specimens to this standard can be used to estimate the reduction in fan sound levels in ducted airflow systems caused by including a sound attenuating device in the system. The device can be a component in a source-path-receiver analysis where calculations are performed to determine the resultant sound level in an occupied space. Correct selection of a sound attenuating device can enable a designer to achieve in-space background noise criteria. 5.2 The insertion loss of a silencer varies with frequency and with the direction and speed of airflow. Because silencers partially obstruct the air path and provide resistance to airflow, two other effects must be quantified: pressure drop and airflow-generated noise. Both increase with increasing air speeds; thus data are required for several airflows to correctly characterize performance. 5.3 The aerodynamic results from testing specimens to the standard can be used as information for the system design engineer to determine the amount of static pressure drop resistance to be overcome by the system fan(s). Guidelines for appropriate maximum allowable pressure drop for a sound attenuating element have been established in the design community and are based on the procedures described herein. 5.4 As stated previously in 1.4 of this test method, the actual performance of a sound attenuating device as installed in an air duct system may be significantly different than reported based on the test procedure herein. This standard does not provide guidance to the user on these system effects. 5.5 Silencers are often designed to be used under conditions which do not duplicate the test set-ups of this standard. Mock-ups and specialized test set-ups to determine performance of sound attenuating devices in non-standard configurations may be based on this test method but cannot be considered to be in full conformance with this test method. See Annex A2 for further information regarding such tests. 1.1 This test method covers the laboratory testing of some of the acoustical properties of sound attenuating devices including duct liner materials, integral ducts, and in-duct absorptive straight and elbow silencers used in the ventilation systems of buildings. Procedures are described for the measurement of acoustical insertion loss, airflow generated noise, and pressure drop as a function of airflow. 1.2 Excluded from the scope are reactive mufflers and those designed for uses other than in ventilation systems, such as automobile mufflers. 1.3 This test method includes a provision for a simulated semi-reflective plenum to fit around thin-walled duct and silencer test specimens, since the acoustical environments around such thin-walled specimens can affect the measured insertion loss. 1.4 This method tests the performance of the specimen in well-defined and controlled conditions. If the specimen is installed in the field in any different manner, the ......

Standard Test Method for Laboratory Measurements of Acoustical and Airflow Performance of Duct Liner Materials and Prefabricated Silencers

ICS
91.120.20 (Acoustics in buildings. Sound insulatio
CCS
N04
发布
2013
实施

This document provides guidance and procedures for assessing the conformity of an item (entity, object or system) with specified requirements. The item might be, for example, a gauge block, a grocery scale or a blood sample. The procedures can be applied where the following conditions exist: -the item is distinguished by a single scalar quantity (see 3.2.1) (a measurable property) de ned to a level of detail sufficient to be reasonably represented by an essentially unique true value; NOTE The GUM provides a rationale for not using the term 'true', but it will be used in this document when there is otherwise a possibility of ambiguity or confusion. -an interval of permissible values of the property is specified by one or two tolerance limits; -the property can be measured and the measurement result (see 3.2.5) expressed in a manner consistent with the principles of the GUM, so that knowledge of the value of the property can be reasonably described by (a) a probability density function (see 3.1.3) (PDF), (b) a distribution function (see 3.1.2), (c) numerical approximations to such functions, or (d) a best estimate, together with a coverage interval and an associated coverage probability.

Uncertainty of measurement.Part 4: Role of measurement uncertainty in conformity assessment

ICS
17.020
CCS
N04
发布
2012-11-19
实施

SN/T 1843的本部分规定了进出口数字和模拟多用表的要求、检验及判定。 本部分适用于旨在测量直流电压、交流电压、直流电流、交流电流和电阻等模拟量的出口数字和模拟多用表,也适用于同类型的以测量电压为基础兼有其他参量(电的或非电的)进出口多用表的检验。

Rules for the inspection of instrumentation for import and export.Part 3:Analog/digital multimeter

ICS
CCS
N04
发布
2012-10-23
实施
2013-05-01

이 표준은 전자 탐침 미소분석에서 사용되고 있는 단일상의 인증표준물질에 관한 권장사항을 담

Microbeam analysis-Electron probe microanalysis-Guidelines for the specification of certified reference materials(CRMs)

ICS
71.040.30;71.040.99
CCS
N04
发布
2012-07-27
实施
2012-07-27

Production equipment for microsystems - Tray - Dimensions and tolerances

ICS
39.020
CCS
N04
发布
2012-07
实施

Capability of detection. Methodology based on stochastic properties of instrumental noise

ICS
03.120.30;17.020
CCS
N04
发布
2012-06-30
实施
2012-06-30

This Standard contains requirements for the competence of bodies performing inspection and for the impartiality and consistency of their inspection activities. It applies to inspection bodies of type A,B or C,as defined in this Standard,and it applies to any stage of inspection.

Conformity assessment -- Requirements for the operation of various types of bodies performing inspection

ICS
03.120.20
CCS
N04
发布
2012-06-20
实施
2012-06-20

Capability of detection - Part 7: Methodology based on stochastic properties of instrumental noise

ICS
03.120.30;17.020
CCS
N04
发布
2012-06
实施

이 표준은 전자 탐침 미소분석기를 이용하여 실험할 때 시편(sample), 파장 분광기,

Microbeam analysis-Electron probe microanalysis-Guidelines for the determination of experimental parameters for wavelength dispersive spectroscopy

ICS
71.040.50
CCS
N04
发布
2012-05-25
实施
2012-05-25

이 기술 표준은 측정 불확도 표현 지침(GUM)에서 취한 접근 방식에 따라 불확도의 성분을

Measurement uncertainty for metrological applications-Repeated measurements and nested experiments

ICS
17.02
CCS
N04
发布
2012-01-23
实施
2012-01-23

Specification for Selectorized Strength Equipment

ICS
17.020
CCS
N04
发布
2012-01-01
实施

5.1 Ideally, interlaboratory testing of a method is conducted by a randomly chosen group of laboratories that typifies the kind of laboratory that is likely to use the method. In actuality, this ideal is only approximated by the laboratories that are available and willing to undertake the test work. The coordinator of the program must ensure that every participating laboratory has appropriate facilities and personnel and performs the method exactly as written. If this goal is achieved, the statistics developed during the ILS will be adequate for determining if the method is capable of producing satisfactory precision in actual use. If the program includes certified reference materials, the test data also provide information concerning the accuracy of the method. The statistics provide a general guide to the expected performance of the method. 1.1 This practice covers procedures and statistics for an interlaboratory study (ILS) of the performance of an analytical method. The study provides statistical values which are useful in determining if a method is satisfactory for the purposes for which it was developed. These statistical values may be incorporated in the method's precision and bias section. This practice discusses the meaning of the statistics and what users of analytical methods may learn from them. 1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Practice for Conducting an Interlaboratory Study to Evaluate the Performance of an Analytical Method

ICS
71.040.40 (Chemical analysis)
CCS
N04
发布
2012
实施

AM Cross Modulation Measurements

ICS
33.180.01
CCS
N04
发布
2012
实施



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