“JJG 51-2003”的系列
为您找到相关结果5
  • 有效 ISA 51.1-1979(R1993)Process Instrumentation Terminology
    发布日期:
    1993-01
    语言:
    英文
    来源:
    新信标准
    快速预览
    有效 ISA 51.1-1979(R1993) Process Instrumentation Terminology
    语言:英文
    适用范围:This Process Instrumentation Terminology Standard is intended toinclude many specialized terms used in the industrial processindustries, to describe the use, performance, operating influences,hardware, and product qualification of the instrumentation andinstrument systems used for measurement, control, or both. Thereare many terms and definitions relating to performance tests andenvironmental influences (operating conditions) as furtherexplained in the Introductory Notes (Paragraph 3.2). Basically,this document is a guideline for vendor/user understanding whenreferring to product specifications, performance, and operatingconditions. Process industries include chemical, petroleum, powergeneration, air conditioning, metallurgical, food, textile, paper,and numerous other industries. The terms of this Standard are suitable for use by peopleinvolved in all activities related to process instrumentation;including research, design, manufacture, sales, installation, test,use and maintenance. The Standard consists of terms selected primarily fromScientific Apparatus Makers Association (SAMA) Standard PMC20.1 andAmerican National Standards Institute (ANSI) Standard C85.1.Additional terms have been selected from other recognizedstandards. Selected terms and definitions have not been modifiedunless there was a sufficiently valid reason for doing so. Newterms have been added and defined where necessary. This Standard is primarily intended to cover the field of analogmeasurement and control concepts, and makes no effort to developterminology in the field of digital measurement and control. Purpose The purpose of this Standard is to establish uniform terminologyin the field of process instrumentation. The generalized testprocedures described in Section 5 are intended only to illustrateand clarify accuracy-related terms. It is not intended that theydescribe specific and detailed test procedures.
    电子版¥495.00
    加入购物车
  • 有效 GJB/Z 51.1-1993军用滤波器和网络系列型谱 电磁/射频干扰滤波器
    发布日期:
    1993-12-20
    实施日期:
    1994-08-01
    语言:
    中文
    来源:
    中国航空综合技术研究所
    快速预览
    有效 GJB/Z 51.1-1993 军用滤波器和网络系列型谱 电磁/射频干扰滤波器
    语言:中文
    适用范围:本指导性技术文件规定了军用电磁/射频干扰谑波器的标准系列和品种,以及选择和应用导则。 本指导性技术文件适用于军用设备在设计和制造时应优先选用的电磁/射频干扰滤波器标准系列相品种,同时也作为电磁/射频干扰滤波器生产、研制、开发时选择系列和品种的基本依据。 本指导性技术文件不作为交货验收的依据。
    纸质版¥44.00
    加入购物车
  • 快速预览
    有效 ASTM F51/F51M-2000(R2014) Standard Test Method for Sizing and Counting Particulate Contaminant In and On Clean Room Garments
    语言:英文
    适用范围:This test method covers the determination of detachableparticulate contaminant 5 μm or larger, in and on the fabric ofclean room garments. This test method does not apply to nonporous fabrics such asTyvek (trademarked) or Gortex (trademarked). It only applies tofabrics that are porous such as cotton or polyester. This test method provides not only the traditional opticalmicroscopic analysis but also a size distribution and surfaceobscuration analysis for particles on a fine-textured membranefilter or in a tape lift sample. It utilizes transmittedillumination to render all particles darker than the background forgray level detection. Particles collected on opaque plates must betransferred to a suitable membrane filter. The values stated in either SI units or inch-pound units are tobe regarded separately as standard. The values stated in eachsystem may not be exact equivalents; therefore, each system shallbe used independently of the other. Combining values from the twosystems may result in non-conformance with the standard. This standard may involve hazardous materials, operations,and equipment. This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establishappropriate safety and health practices and determine theapplicability of regulatory limitations prior to use.
    电子版¥250.00
    加入购物车
  • 快速预览
    有效 ITU-R QUESTION 51/6-2000 SKY-WAVE RECEPTION IN LF, MF AND HF BROADCASTING
    语言:
    适用范围:There is no abstract currently available for this document
    电子版¥125.00
    加入购物车
  • 快速预览
    ASTM F51_F51M-2000(R2014)ε1 Standard Test Method for Sizing and Counting Particulate Contaminant In and On Clean Room Garments1
    语言:
    适用范围:
    电子版¥80.00
    加入购物车