Product Code:SAE AIR975
Title:Maintenance of Pitot-Static Systems of Transport Aircraft
Issuing Committee:A-4 Aircraft Instruments Committee
Scope:In efforts to increase the accuracy and reliability of altimetry, speed measurement and other aspects of air data, a great deal of attention and money have been expended on new and refined pressure transducing and computing systems and on the standards by which they are calibrated. So much progress has been made in this that the limiting factor is, or may soon be, the sensing and transmitting in the aircraft of the pressure to be transduced. Until the appearance of References 1 - 13 and 18 there was little guidance available on the maintenance of pitot and static systems. This report presents what information is available, suggests limits, and lists the principal original papers on the subject.
【英文标准名称】:StandardPracticeforCalculationandAdjustmentoftheStiffandDavisStabilityIndexforReverseOsmosis
【原文标准名称】:反渗透粘稠性和戴维斯稳定性指数的计算和调整的标准规程
【标准号】:ASTMD4582-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D19.08
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:水;稳定性;数学计算;反渗透;调节;工艺
【英文主题词】:calciumcarbonate;membranescaling;reverseosmosis(RO);stabilityindexforRO;StiffandDavisStabilityIndex(SDSI)
【摘要】:Inthedesignandoperationofreverseosmosisinstallations,itisimportanttopredictthecalciumcarbonatescalingpropertiesoftheconcentratestream.Becauseoftheincreaseintotaldissolvedsolidsintheconcentratestreamandthedifferencesinsaltpassagesforcalciumion,bicarbonateion,andfreeCO2,thecalciumcarbonatescalingpropertiesoftheconcentratestreamwillgenerallybequitedifferentfromthoseofthefeedsolution.ThispracticepermitsthecalculationoftheSx0026;DSIfortheconcentratestreamfromthefeedwateranalysesandthereverseosmosisoperatingparameters.ApositiveSx0026;DSIindicatesthetendencytoformacalciumcarbonatescale,whichcanbedamagingtoreverseosmosisperformance.ThispracticegivesproceduresfortheadjustmentoftheSx0026;DSI.1.1ThispracticecoversthecalculationandadjustmentoftheStiffandDavisStabilityIndex(SDSI)fortheconcentratestreamofareverseosmosisdevice.Thisindexisusedtodeterminetheneedforcalciumcarbonatescalecontrolintheoperationanddesignofreverseosmosisinstallations.Thispracticeisapplicableforconcentratestreamscontainingmorethan10000mg/Loftotaldissolvedsolids.Forconcentratestreamscontaininglessthan10000mg/Loftotaldissolvedsolids,refertoPracticeD3739.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G04
【国际标准分类号】:71_120_99
【页数】:4P.;A4
【正文语种】:
基本信息
| 标准名称： | 电火花加工机床 操作指示形象化符号 |
| 英文名称： | Electro-discharge machines — Visualized symbols for operation and indication |
| 中标分类： |
机械 >>
金属切削机床 >>
特种加工机床 |
| ICS分类： |
机械制造 >>
机床 >>
其他机床
|
| 替代情况： | 替代JB/T 10208-2000 |
| 发布部门： | 中华人民共和国工业和信息化部 |
| 发布日期： | 2012-05-24 |
| 实施日期： | 2012-11-01 |
| 首发日期： | |
| 作废日期： | |
| 归口单位： | 全国特种加工机床标委会 |
| 起草单位： | 苏州电加工机床研究所有限公司 |
| 出版社： | 机械工业出版社 |
| 出版日期： | 2012-11-01 |
适用范围
本标准规定了用于电火花加工机床的各种操作指示形象化符号。
本标准适用于电火花加工机床及其附件的操作指示标牌、面板和标志等。
前言
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目录
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引用标准
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所属分类： 机械 金属切削机床 特种加工机床 机械制造 机床 其他机床