网站标志
当前日期时间
当前时间:
会员登录
登录账号:
登录密码:
验证代码:
您好,您已登录
您有条新到站内短信
会员中心 退出登录
 
 
点评详情
发布于:2017-8-8 13:59:36  访问:43 次 回复:0 篇
版主管理 | 推荐 | 删除 | 删除并扣分
Test And Measurement Equipment - Best Partner For Manufacturers For Precision Connectivity Solutions And Electronic Components
Warning: These Five Mistakes Will Destroy Your Test And Measurement Equipment
Electronic Engineering Tools - What are Electronic Components, Electronic Devices & Electronic Equipments?
visit this website for Fusion Splicers, OTDRs, Cable Testers, Certifiers, CATV Meters, Site Master, Scopemeters, Models-Ericsson, Fitel, Fujikura, Sumitomo, Nettest, EXFO, Agilent, Fluke Networks, Noyes, Microtest, Anritsu, JSDU, Corning, Siecor and for a wonderful selection of Test Equipment assets and parts.
As the title says, in this article i am going to discuss about the measurement standards that have been used even in the present date.
A standard of measurement is a physical representation of the unit of the measurement.
These terms are applied to a piece of equipment having a known measure of physical quantity. Each standard is an invention of the human being to facilitate or make possible of the measurement process. One of the most important responsibilities of a government is to set and maintain standards, thereby provided a commonly accepted basis of comparison.
This is the flow of standards as below:
1. International
2. primary
3. secondary
4. working
International standards:
These are defined on the basis of international agreements. They are regularly evaluated and checked against absolute measurement in terms of fundamental units.
These are maintained at the international bureau of weights and measure at serves near pairs and are not available to ordinary uses of measuring instruments for purpose of comparison or calibration.
Primary Standards:
The main function of the primary is the verification and calibration of the secondary standards. They are maintained by the national standards laboratories (NSL) or the stored is government lockers in different part of the world.
They are independently calibrated by absolute measurement and each of the national laboratories. The results of those measurement are compared heading to a world average figure for the primary standards.
The primary is the ultimate against which secondary` are compared. They are available for use outside the national laboratories.
Secondary Standards:
These are the basics reference standards used in the industrial measurement laboratories. These standards are maintained by the particular industry and over checked locally against other reference standards in the area. The industrial laboratories are entirely responsible for maintainability and calibration of the secondary standards.
The secondary standards are normally sent to the national standards laboratories on the regular basics for its calibration and comparison against primary standards. After calibration they are sent back to the industrial user with a certification of their measured values in terms of the primary standards.
Working Standards:
These are the principle tools of a measurement laboratories. they are to check and calibrate general laboratory instrument for accuracy and performance are to perform comparison measurement in industrial application. It may be less accurate and less expensive.
If you have any queries relating to exactly where and how to use GN Nettest GN-6025 Fiber Optic Test, you can get in touch GN Nettest GN-6025 Fiber Optic Test with us at our web site.
共0篇回复 每页10篇 页次:1/1
共0篇回复 每页10篇 页次:1/1
我要回复
回复内容
验 证 码
看不清?更换一张
匿名发表 
脚注信息

公司地址:广西南宁市青秀区民族大道131号航洋国际城B座恒富中心8层
联系电话:0771-5785718   业
务QQ:1578505326  QQ群:57772351   传真号码:0771-5785708

版权所有 Copyright @ 2009-2015 广西恒名投资有限公司 桂ICP备14002474号