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WSNF8551A322 EF8551G401MO阀门配件 VCEFCM8551G321,ASCO EFG551A001MS电磁阀 EFG551H401MO普通防爆电磁阀 EF8320G202,ASCO电磁阀厂家 VCEFCMG551A321,ASCO电磁阀 VCEFCMG551H401MO隔爆电磁阀 防爆电磁阀VCEFG551H417 原装ASCO电磁阀SCG553A017MS EFG551A002MS,551系列隔爆电磁阀 EF8551G401MO,ASCO电磁阀代理 VCEFCM8551G321、ASCO电磁阀 WSNF8551A321二位五通电磁阀 VCEFG551H401MO、ASCO电磁阀 WSNF8551A321、ASCO电磁阀 EF8551G301MO,ASCO电磁阀 WSNF8551A321隔爆电磁阀 WBIS8551A309MO电磁阀面价 WBIS8551A301、ASCO防爆电磁阀 WBIS8551A301先导式电磁阀 VCEFG551H417热销电磁阀 EF8551A001MS防爆电磁阀 EF8551G322 551系列防爆阀 NF8551A321,ASCO管接电磁阀 NF8551B401MO手动操作电磁阀 EF8551G301MO手动操作电磁阀 EFG551A002MS电磁阀 EF8551G401MO ASCO电磁阀 EFG551A017MS ASCO电磁阀 EF8551A001MS电磁阀 EFG551H417 EF8551G322 EFG551H417 WSNF8551A321,ASCO EF8551A001MS电磁阀 EFG551A002MS电磁阀货期 WBIS8551A301本安型防爆 WSNF8551A321 EFG551A002MS防爆电磁阀 EF8551G401MO EFG551A001MS防爆电磁阀 WSNF8551A321贵电磁阀 NF8551A322 ASCO双电控 VCEFCM8551G321、ASCO隔爆 WSNF8551A321电磁阀安装 EF8551G322双线圈电磁阀 NF8551A422欧洲工厂 EF8551G401MO、ASCO电磁阀 EF8551G322防爆等级 NF8551A321二位五通不锈钢 NF8551A322,进口电磁阀 WSNF8551A321 WSNF8551A321 美国电磁阀/EF8551G401MO EF8551A001MS EF8551A001MS/ASCO单电控 EF8551G401MO,ASCO美国电磁阀 EF8551A001MS EF8551G401MO普通防爆型 EFG551A002MS电磁阀厂家 WSNF8551A321五通隔爆阀 EF8551A001MS防爆型 EF8551G401MO大线圈电磁阀 WSNF8551A321全不锈钢电磁阀 EF8551G401MO EF8551G401MO,EF防爆型电磁阀 EF8551A001MS,551防爆型 EF8551G301MO ASCO手动操作 EF8551G401MO ASCO普通型号 NF8551A422不锈钢双线圈 NF8551A322双电控好价格 WSNF8551A321二位五通不锈钢 WSNF8551A321五通不锈钢 EF8551G401MO ASCO板接电磁阀 EF8551A001MS普通防爆电磁阀 EF8551G401MO防爆型电磁阀 EF8551A001MS EF8551A001MS与EFG551A001MS EF8551G401MO NF8551A322 EF8551G401MO EF8551G301MO电磁阀 VCEFCM8551G301MO隔爆型号 VCEFCM8551G321 VCEFCM8551G421浇封电磁阀 099216-007-D 099216-005-D 099216-004-D 099216-002-D 099216-001-D 097617-018-D 097617-005-D 097617-004-D 074073-005-D 066611-003-D 064982-009-D 064982-005-D 064982-004-D 064982-002-D 064982-001-D 062691-002-D 062691-001-D 027478-007-D 027478-001-D EF8551G301MO--ASCO低功耗电磁阀 EF8314G300--低功耗电磁阀 WBISG531B301MO--ASCO本安型电磁阀 WBIS8314A301--本安型防爆电磁阀
, the leader in the design and manufacture of solenoid valves, now offers a complete line of Pressure Sensors. With pressure ratings up to 10,000 PSI and the ability to handle rugged applications like steam and refrigeration, Pressure Sensors will satisfy your most demanding needs. The Pressure Sensor line is suitable for accurately measuring many process fluids in the most demanding, pulsating and vibrating environments. The one piece pressure cavity is machined from 17.4 PH stainless steel, which offers no source for contamination of the process fluid or the sensor. This design provides the stability, accuracy, flexibility, and EMI resistance that your process needs.
武汉华哲嘉业自动化设备有限公司手机:15927078030电话:027-87279388传真:027-87279088QQ:445279690联系人:刘先生FEATURES? Solenoid valves with explosionproof operators NF or WSNF type for use in potentially explosive atmospheres according to ATEX Directive 94/9/ECEC type examination certifi cate no.: LCIE 00 ATEX 6008 XIECEx Certifi cate of Conformity no.: IECEx LCI 07.0015X? Compliance with the Essential Health and Safety Requirements has beenassured by compliance with the International and European StandardsEN-IEC 60079-0, EN-IEC 60079-1, EN-IEC 61241-0 and EN-IEC 61241-1? The solenoid valves are recommended for pilot applications with high fl ow, widepressure ranges and no minimum operating pressure? Special execution for low ambient and fl uid temperatures? The solenoid valves with an orifi ce size of 5,7 mm have TüV certifi ed IEC 61508Functional Safety data and can be used up to SIL 4ASCO阿斯卡电磁阀美国原装进口美国ASCO电磁阀 美国ASCO全球工厂生产超过3000多种标准电磁阀和20000多个非标准型号。主要包括:控制空气、水、轻油、惰性气体、燃油、汽油、蒸汽、真空、超低温、高频率操作等环境。ASCO电磁阀有以下类别:普通型、防爆型、手动复位型、本安型、滑动型、蒸汽/热水专用电磁阀等; ASCO-JOUCOMATIC在电磁阀方面,提供了广泛的选择,其中流体可以是易燃、易爆介质或腐蚀性介质。压力可达到150bar,温度可以从-50到300℃。口径主要有从1/8英寸到6英寸,操作形式有常闭型,常开型和通用型的2,3,4,5通电磁阀。ASCO电磁阀有很多电磁阀可以通用,但在能满足以上三点的基础上应选用经济的产品。ASCO电磁阀电磁阀的选型ASCO电磁阀选型首先应该依次遵循安全性,可靠性,适用性,经济性四大原则,其次是根据六个方面的现场工况(即管道参数、流体参数、压力参数、电气参数、动作方式、特殊要求进行选择)。ASCO电磁阀一般电磁阀不防水,在条件不允许时请选用防水型,工厂可以定做。ASCO电磁阀电磁阀的高标定公称压力一定要超过管路内的高压力,否则使用寿命会缩短或产生其它意外情况。ASCO电磁阀有腐蚀性液体的应选用全不锈钢型,强腐蚀性流体宜选用塑料王(SLF)电磁阀。ASCO电磁阀爆炸性环境必须选用相应的防爆产品。ASCO电磁阀分为常闭和常开二种;一般选用常闭型,通电打开,断电关闭;但在开启时间很长关闭时很短时要选用常开型了。ASCO电磁阀寿命试验,工厂一般属于型式试验项目,确切地说我国还没有电磁阀的专业标准,因此选用电磁阀厂家时慎重。ASCO电磁阀动作时间很短频率较高时一般选取直动式,大口径选用快速系列
Features• Hot water service to 210 psi differential @ 210˚F; Steam sevice to 125 psi differential @ 353˚F• Specify these valves for the high-temperature applicationsfound in laundries, molding, steam atomization, sterilizers,autoclaves, and many others• Series 8263: direct acting miniature valves• Series 8267: direct acting straight-through, self-cleaning design• Series 8210/8220: pilot operated diaphragm valves• Series 8220: pilot operated diaphragm and piston valves; floating PTFE diaphragms or stainless steel pistons with EPDM or PTFE discs • Series 8221: slow-closing, anti-water hammer design • Series 8222: pilot operated diaphragm and piston valves.Y-body floating piston design
Solenoid EnclosuresNominal Ambient Temp. RangesRedHat II AC: 32˚F to 125˚F (0˚C to 52˚C)For 8263 Steam/Hot Water SeriesRedHat II AC: 32˚F to 131˚F (0˚C to 55˚C) For 8210 Hot Water SeriesRedHat II DC: 32˚F to 104˚F (0˚C to 40˚C)For 8220 Steam/Hot Water SeriesRedHat II DC: 32˚F to 125˚F (0˚C to 52˚C)Refer to Engineering Section for details.ApprovalsMost are UL listed, CSA certified, and meet applicableCE directives. Contact ASCO for details.Important: Explosionproof Catalog Numbers EF8210HW,EF8220, EF8221HW, and EF8263 (except G300-306) are notUL listed. They are suitable for Types 4 & 7 (A-D), and 9 (E, F, & G for Class F; E for class H coils) only, and have atemperature range code of T3B (Class F) or T3A (Class H).
一、 防爆概念
1、 引起爆炸的三个必要条件,三个条件同时具备 —— 爆炸 点火所需能量 source of igrution;空气或氧气 air or oxygen;flammable air flammable dust 2、 防止爆炸的产生必从三个必要条件来考虑,限制了其中的一个必要条件,就限制了爆炸的产生。在工业过程中,通常从下述三个方面着手对易燃易爆场合进行处理。 1)预防或大限度地降低易燃物质泄漏的可能性; 2)不用或尽量少用易产生电火花的电所元件; 3)采取充氮气之类的方法维持惰性状态。 二、 危险区域的等级分类及电气元件防爆分类和允许温度区域 1、 危险区域的等级分类 0区(Zone 0): 易爆气体始终或长时间存在 1区(Zone 1): 易燃气体在仪表的政党工作过程中有可能发生或存在 2区(Zone 2): 一般情形下,不存在易燃气体且即使偶尔发生,基存在时间亦很短 易爆区域等级划分,国际标准与美国标准的对照比较 I.E.C. N.E.C. 气体 Zone 0 Class I, Division I Zone 1 Class I, Division I Zone 2 Class I, Division II 粉尘 Zone 10 Class II, Division I Zone 11 Class II, Division II I.E.C.: 国际电工技术委员会(Internaional Electrotechnical Commission) N.E.C.: 美国电气规程(National Electrical Code, U.S.A.) 2、电气元件防爆分类 1、一般保护 EN50.014 2、浸油保护 0 EN50.015 3、充压保护设施 p EN50.016 4、加充粉末 q EN50.017 5、阻燃壳体 d EN50.018 6、提高安全系数 e EN50.019 7、本安保护 i EN50.0120 8、气密保护 h 未统一 9、压力花保护 n 未统一 10、特殊措施 s 未统一 3、电气设备允许温度区域 电气元件温区等级号 元件表面温度大允许值(°C) 气体燃点(°C) T1 200T450 450 T2 200T300 300 T3 135T200 200 T4 100T135 135 T5 85T100 100 T6 T85 85 三、 几种常见物质的爆炸特性
名称 燃点(°C) 温度等级 爆炸等级组号 名称 燃点(°C) 温度等级 爆炸等级组号 丙酮 540 T1 IIA 乙炔 305 T2 IIC 醋酸酐 330 T2 IIA 苯 555 T1 IIA 丁烷 365 T2 IIA n-丁醇 340 T2 IIA 苯氯酸 590 T1 IIA 乙醇 425 T2 IIA 乙醋酸 460 T1 IIA 甲醇 455 T1 IIA 硝基苯 430 T1 IIA n-戊烷 285 T3 IIA 丙烷 470 T1 IIA 甲苯 535 T1 IIA 氢气 560 T1 IIC 硫化氢 270 T3 IIB 二硫化碳 102 T5 IIC 四、本安型传感电路的供电限制 供电限制主要体现在以下三个方面: 1、将动力电与电子元件隔离。 2、采取措施杜绝外界干扰电磁场通过继电或电流输出端偶合至电子元件中。 3、限制传感电路的工作电源及电压 本安型电路可分为两类:ia及ib。Ib本安电路必须保证政党工作状态下以及系统中存在一起故障时,电路元件不发生燃爆。Ia本安电路则要求正常工作状况下及存在两起故障时,元器件不发生燃爆。 五、EH仪表所遵循的主要防爆标准 1、IEC / CENELEC / EUrOPE及NORTH AMERICA / FM标准为经常选用,而CANADA / CSA标准几乎在中国不使用。 例: CENELEC: Eex de/Eex d ib IIC T2-T6 FM: NI/I/Z/ABCD DIP/II, III/1/EFG XP/I/1/ABCD DIP/II, III/1/EFG CSA: Class I, Div 2, ABCD 2、新的欧洲防爆标准ATEX100a将取代原CENELEC标准(截止2003年) ATEX 100a: II IG Eex ia IIB T6 I II 1G Zone 0 1D, 2D,3D dust explosion Mining other 2G Zone 1 Industry industry 3G Zone 2 六、仪表壳体防护等级的划分 作为应用于易爆危险区的仪表,对其外壳的保护等级亦应作出规定,赋予一定的代码,即IP等级号。 IEC144规定的壳体保护等级由一个对应其抗外界物体冲击与穿刺能力及防水能力的代码表示。例如:本安型仪表测量电路板不应从其壳体中取出,否则会违反IP40所提出的低要求。保护等级由两位数字组成,在其前加上IP字样。 IP1 2 第一位数字 第二位数字 抗外界物体冲刺能力 防水能力 0无抗冲穿能力 0无防水穿能力 1外界物体尺寸大于50mm(特大) 1水自落下滴 2外界物体尺寸大于120mm(中) 2水滴入角度为-15° 3外界物体尺寸大于2.5mm(小) 3水以60°角度喷射 4颗粒状外界物体,粒度大于1mm 4从各方面喷射 5危险性尘埃 5 50升/分的水束 6穿透性尘埃(仅适用于特殊壳体) 6 100升/分的水束 7以1米/分的速度浸入水中 8 以预先商定的方式浸入水中ASCO has been designing and manufacturing quality fluid control products since 1910. Leading the valve technology, our wide range of solenoid valves ensures smooth operation of processes.When it comes to pneumatics and motion control products, our Numatics range provides the best solutions to meet the requirements of your application.Within the Asia Pacific region, we have over 75 offices to cater for the needs of your business. Our worldwide manufacturing facilities, engineering specialists and distribution network are ready to meet your requirements for fluid control valves, pneumatic components and accessories to meet your applications.Apparatus and processes in which valves partly come into direct contact with fluids introduced into or taken from patients are a part of medical technology. e.g. the handling of medical gases in respirators or the handling of liquids in dialysis. This field of application requires the use of inert materials, a low dead volume, low power consumption as well as easy-to-flush internal valve or system cavities.Medical product laws require compliance with applicable legal requirements. Many applications require a hermetic separation between the fluid (liquid or gas) and the internal parts (control system) of the solenoid valve in order to:exclude particulate contamination caused by friction of moving parts,minimise heat transfer from the electromagnetic part, andensure a high level of reliability of the solenoid valve when handling extremely aggressive fluidsThe valves in these apparatus and processes do not come into direct contact with the patient, and they are mainly designed to handle aggressive gases and liquids instead.Analytical applications require resistance to aggressive fluids (inert valves), a low dead volume and an easy-to-flush design. To reduce heat transfer into the fluid, valves with low power consumption are used.Our range of valves are ideal for use in applications in the following areas of:Medical TechnologyArtificial respiration AnaesthesiaOxygen concentration DialysisDentistry Clinical sterilisationMinimally invasive surgery CryosurgeryCellulitis treatment Analytical TechnologyChromatography(GC, IC and HPLC) HaematologyImmunology ZytologyBiotechnology (DNA synthesis) Emission analysisWater analysis Leak measurement
武汉华哲嘉业自动化设备有限公司手机:15927078030电话:027-87279388传真:027-87279088QQ:445279690联系人:刘先生
刘先生
15927078030
供应商:刘先生
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