【英文标准名称】:Hydrometricdeterminations-Cablewaysystemsforstreamgauging(ISO4375:2000);GermanversionENISO4375:2004
【原文标准名称】:水文测验.河流测量用索道系统
【标准号】:ENISO4375-2004
【标准状态】:现行
【国别】:
【发布日期】:2004-06
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:定义;设计;设备;测量技术;规范(验收);试验;检验;功能;安全系数;描述;测量设备;缆索铁路;水;避雷装置;斜槽;流水;明渠流动;液体流动;计量学;溢流堰;产品规范;维修;绳索;承重能力;流速测量;闪电;系统;明渠;流量测量;尺寸;排量测量;流速
【英文主题词】:Cablerailways;Channelflow;Definition;Definitions;Descriptions;Design;Dimensions;Dischargemeasurement;Equipment;Factorofsafety;Flowmeasurement;Flowmeasurements;Flumes;Functions;Hydrometer;Hydrometry;Inspection;Lightning;Lightningprotection;Liquidflow;Loadbearingcapacity;Maintenance;Measuringequipment;Measuringtechniques;Metrology;Openchannels;Productspecification;Ropes;Runningwaters;Specification(approval);Systems;Testing;Water;Weirs
【摘要】:
【中国标准分类号】:N12
【国际标准分类号】:17_120_20
【页数】:32P.;A4
【正文语种】:英语


Product Code:SAE J639
Title:Safety Standards for Motor Vehicle Refrigerant Vapor Compressions Systems
Issuing Committee:Interior Climate Control Committee
Scope:This SAE Standard applies to refrigerant vapor compression systems that provide cooling and/or heating for passenger cars, light trucks and commercial vehicles (on and off road) that use automotive type mobile air conditioning [MAC] systems. Large trucks, buses and other vehicles that do not use typical automotive a/c systems or use refrigerants not listed in this document are not covered by this standard. This standard covers any vehicle with a MAC system using a belt or electric motor driven compressor.This document provides standards for design, assembly, test and service of MAC systems to minimize environmental, health and safety impacts. Also included are cautionary statements for the service industry to alert technicians to the inadvisability and possible health or safety effects associated with venting refrigerant during service. It is not intended to restrict the use, or further development, of other types of refrigeration systems for mobile air conditioning applications. This document may be amended or additional safety standards created should other systems become practical. This document addresses only HFC-134a (R-134a), carbon dioxide (R-744), and HFO-1234yf (R-1234yf) refrigerants. To prevent system contamination all refrigerants used in mobile air conditioning vapor compression systems require unique service fittings and service equipment. The unique service fittings are intended to eliminate the potential for system refrigerant cross-contamination during service activity. CFC-12 (R-12) is no longer in use in new MAC systems. The service fitting description is maintained as a reference for older vehicles still in use. When retrofitting an R-12 system to use R-134a or when removing R-12 (vehicle disposal) use service equipment designed for R-12 and certified to meet the requirements of SAE J1990 (R-12 recovery and recycle equipment).HFC-152a is an A2 flammable refrigerant as classified by ASHRAE 34 and should be used only with a secondary loop application. However, until MAC systems are developed to use R-152a (HFC-152a), no SAE Standards for system design, service equipment or service procedures have been established. The R-152a service fittings described within this Standard were established as part of the industries evaluation of replacement refrigerants and are maintained for future design guidance and to prevent potential refrigerant cross contamination.