SG 200-1984 电动剃须刀
作者:标准资料网 时间:2024-05-23 19:30:29 浏览:8726
来源:标准资料网
基本信息
| 标准名称： | 电动剃须刀 |
| 中标分类： |
轻工、文化与生活用品 >>
家用电器、日用机具 >>
家用清洁、整容器具 |
| 替代情况： | 被QB/T 1874-93代替 |
| 发布日期： | |
| 实施日期： | 1995-10-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
适用范围
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前言
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引用标准
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所属分类： 轻工 文化与生活用品 家用电器 日用机具 家用清洁 整容器具
Product Code:SAE J2382
Title:Video Based Light Measurement Techniques
Issuing Committee:Test Methods And Equipment Stds Committee
Scope:Traditional methods of photometry rely on the use of a goniometer to rotate the test item around two axes at right angles. This method is satisfactory for most situations but has certain disadvantages:a. Point-by-point measurements with a goniometer may be slow. With more advanced requirements, particularly for headlamps, where the entire beam pattern is of concern, isocandela measurements are becoming increasingly needed. Such testing can be very time consuming.b. For production quality assurance, the speed of a goniometer may not allow testing to keep pace with the production line if a large quantity of lamps must be sampled.c. High Intensity Discharge (HID) lamps are becoming commonly used. Such lamps are orientation sensitive, changing in both lumen output and intensity distribution when tilted. This can introduce significant inaccuracies in test results when testing is performed using a goniometer.There is a need for alternative test techniques which can achieve very high speed data acquisition, the capture of full isocandela distribution, and the elimination of lamp tilting. This SAE Informational Report describes fundamentals of video-based testing to address these concerns. Further information is required to provide all details needed to set up a laboratory using these techniques.With the video-based system, the lamp is fixed in position and aimed at a receiving screen. A camera, of particular type and grade, views the screen and is able to perform measurement of the reflected light (luminance) at each point on the screen. Proper calibration of the system can provide the luminous intensity distribution of the light under test from the measured luminance values.Numerous factors must be taken into account to produce an accurate measurement system. Under controlled conditions, it has been shown that the system can produce measurement of absolute intensity distributions with good accuracy. (Reference 2.1.1 and 2.1.2.)The great advantage of this form of photometry is its extremely high speed, allowing the collection of isocandela diagrams in less than one minute. There are some accompanying disadvantages which are discussed later.This document describes the basic techniques and the controls which are necessary for accuracy.Comments are also provided comparing video based technology to conventional goniometer methods.【英文标准名称】:Non-destructivetestingofsteeltubes-Part3:automaticeddycurrenttestingofseamlessandwelded(exceptsubmergedarc-welded)steeltubesforthedetectionofimperfections.
【原文标准名称】:钢管的无损检验.第3部分:检测缺陷用无缝和焊接钢管(埋弧焊除外)的自动涡流试验
【标准号】:NFA49-875-3-2000
【标准状态】:作废
【国别】:法国
【发布日期】:2000-08-01
【实施或试行日期】:2000-08-05
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:涡流试验;无缝的;缺陷;无缝管;调查;焊接的;涡流法;有缝管;钢;缺陷与故障;钢管;钢管;无损检验;误差校验;试验;规范(验收)
【英文主题词】:Defects;Eddy-currentmethods;Eddy-currenttests;Errorchecking;Non-destructivetesting;Seamedpipes;Seamless;Seamlesspipes;Specification(approval);Steelpipes;Steeltubes;Steels;Surveys;Testing;Welded
【摘要】:
【中国标准分类号】:H48
【国际标准分类号】:23_040_10;77_040_20
【页数】:15P.;A4
【正文语种】:其他
