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从事常规儀表安装、维护二十多年。有较丰富的现场工作经验。[詳細] 了解更多

王真

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06年毕业于科技大学自动化专业,后一直从事流量及液位儀表的开发及应用。先就职于北京华...[詳細] 了解更多

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[{"ID":"817","Title":"G1/2是多大的口徑?","Detail":"G1/2是多大的口徑?","FromUserID":"17793","UserName":"vivi12","FromCompanyID":"9756","CompanyName":"浙江兴旺宝明通网络有限公司","FromName":"ybzhan","ToID":"21","ExpertName":"儀表网问答小助理","IndustryType":"3991,3992","Linkman":"李","Telphone":"0571-87756393/9()","Email":"543198319@qq.com","Sort":"0","IsShow":"1","Flag":"1","CanPost":"0","CreateTime":"2011/11/11 11:43:15","HitNumber":"17706","Answer":"接口管径G1/4的意思是用与之对应的接头连接,1/4是非螺纹密封的管螺纹,对应的螺纹大径是13.157mm,小径为11.445mm。其实也不用知道G1/4是多大,拿G1/4的接头连接上,接头上再接皮管就行了。皮管的口径由接头来确定。 电磁阀的接管口径 3/8是是我们常说的四分管,对应公制螺纹的公称口径是20毫米,真实管的外径是21.3毫米。 行内人”通常用“分”来称呼螺纹尺寸,一英寸等于8分,1/4英寸就是2分,以此类推。电磁阀中的PT1/8、PT1/4指的是电磁阀上的接口螺纹的规格。","IndustryTypeName":"流量儀表,泵閥"},{"ID":"862","Title":" 電動閥畫在布置圖上是什麽符號?","Detail":"電動閥畫在布置圖上是什麽符號???
","FromUserID":"17793","UserName":"vivi12","FromCompanyID":"9756","CompanyName":"浙江兴旺宝明通网络有限公司","FromName":"ybzhan","ToID":"21","ExpertName":"儀表网问答小助理","IndustryType":"3992","Linkman":"许小姐","Telphone":"0571-87756393/9()","Email":"543198319@qq.com","Sort":"0","IsShow":"1","Flag":"1","CanPost":"0","CreateTime":"2011/12/14 18:22:52","HitNumber":"6521","Answer":"国产阀门型号的编制表示方法:
1 2 3 4 5—6 7
1— 阀门类型代号:闸阀—Z、截止阀—J
2— 阀门传动方式代号:电动—9、气动—6、液动—7
3— 阀门连接形式代号:内螺纹—1、外螺纹—2、法兰—4
4— 阀门结构形式代号:
5— 阀座密封面或衬里材料代号:
6— 公称压力数值:
7— 阀体材料代号:
(引自《管道識圖》胡憶沩等編,化學工業出版社)
不同的书籍,图形符号有些差异。","IndustryTypeName":"泵閥"},{"ID":"211","Title":"儀表的[MC]是什么意思?","Detail":"我看到有的压力表,电压表,电流表,温度表都有[MC],它究竟指什么啊?","FromUserID":"24176","UserName":"vivi112204","FromCompanyID":"15256","CompanyName":"杭州明通科技","FromName":"wang","ToID":"21","ExpertName":"儀表网问答小助理","IndustryType":"3990,3993,3985","Linkman":"小林","Telphone":"0571-87756399","Email":"","Sort":"0","IsShow":"1","Flag":"1","CanPost":"0","CreateTime":"2010/10/29 17:43:25","HitNumber":"6065","Answer":"采纳网友华升仪器的说法,MC在许多仪器上加个方框意思是CMC,是China Metrology Certification的缩写,表示该産品已获得国家计量器具许可证。","IndustryTypeName":"分析檢測,测量/计量,溫度儀表"},{"ID":"1271","Title":"購買望遠鏡判斷質量好壞的幾點方法","Detail":"我们在买望远镜是面对店面或网上铺天盖地的宣传介绍看得我们眼花缭乱,都是品牌都是感觉不错。但就在确定要买哪个型号时确犹豫不决。我这里有几点心得介绍给大家:
1、買是首先選擇是單筒還是雙筒,一般來家望遠鏡最廣泛的使用都是雙筒。
2、看望遠鏡是手動調焦還是自動聚焦,最先進的望遠鏡目前流行自動聚焦,自動聚焦的好處是觀測運動的目標可以及時觀測准時准確捕捉清晰的目標。而手動聚焦則浪費時間精力錯過捕捉目標的時間機會。現實生活中目標有靜止的有移動的故最好能買自動聚集的望遠鏡。
3、目前质量不错","FromUserID":"34111","UserName":"ok1718","FromCompanyID":"26417","CompanyName":"武汉欧卡科技有限公司","FromName":"刘艳","ToID":"0","ExpertName":"","IndustryType":"3965","Linkman":"乔小姐","Telphone":"027-88311367-605","Email":"1109018416@qq.com","Sort":"0","IsShow":"1","Flag":"0","CanPost":"0","CreateTime":"2012/4/26 13:17:23","HitNumber":"5737","Answer":"","IndustryTypeName":"专用儀表"},{"ID":"863","Title":" 液位計顯示不正常求解","Detail":"我厂一装置区有冷凝液闪蒸槽一台,操作压力0.4MPa,介质时蒸汽冷凝液,装有双法兰差压液位计(横河EJA118W)及磁翻板液位计各一台。两台液位计都是测的1.2M高度。现在双法兰液位计(已迁移过)显示:在80%-85%之间波动。但是打开阀门排液时,只是蒸汽,而液位计还是指示:在80%-85%之间波动。磁翻板液位计要么不显示,要么就显示满量程。满量程式关闭根部阀,打开液位计倒淋只有一点水,剩下全是蒸汽(根部阀内漏)。问题:1.双法兰液位计为什么只在在80%-85%之间波动。2.磁翻板里没有过多水,","FromUserID":"17793","UserName":"vivi12","FromCompanyID":"9756","CompanyName":"浙江兴旺宝明通网络有限公司","FromName":"ybzhan","ToID":"91","ExpertName":"何守柱","IndustryType":"3994","Linkman":"林先生","Telphone":"0571-87756393/9()","Email":"543198319@qq.com","Sort":"0","IsShow":"1","Flag":"1","CanPost":"0","CreateTime":"2011/12/14 18:23:48","HitNumber":"5227","Answer":"1.先查看电源是不是接对,如发现接法不正确应按照操作手册进行修正

2.用三电压表量测 24V与O/P间之电压,电压应在13V~36V之间,若电压不正常应查看线路或有关设备是不是反常

3.第2項應先承認正常後,再于4~20MA回路串一只毫安電表,查看電流是不是正常,若電流值不正常應替換新品或洽客服人員

4.用电压表查看IN与COM间之电压,正常应为2.5V左右,若电压过低应再移除EXC导线看看,若是电压康复正常则表明磁黄模块不正常,若电依然偏低则表明信号转换器损坏。","IndustryTypeName":"液/物位儀表"},{"ID":"1283","Title":"電磁閥雙電控和單電控區別在哪裏?","Detail":"電磁閥雙電控和單電控區別在哪裏?","FromUserID":"17793","UserName":"vivi12","FromCompanyID":"9756","CompanyName":"浙江兴旺宝明通网络有限公司","FromName":"ybzhan","ToID":"21","ExpertName":"儀表网问答小助理","IndustryType":"3992","Linkman":"宋先生","Telphone":"0571-87756393/9()","Email":"mtxwbyb@163.com","Sort":"0","IsShow":"1","Flag":"1","CanPost":"0","CreateTime":"2012/4/28 11:08:53","HitNumber":"5085","Answer":"双电控:即有两个电磁线圈,一般用在两位五通电磁阀,两位五通双电控电磁阀动作原理:给正动作线圈通电,则正动作气路接通(正动作出气孔有气),即使给正动作线圈断电后正动作气路仍然是接通的,将会一直维持到给反动作线圈通电为止。 给反动作线圈通电,则反动作气路接通(反动作出气孔有气),即使给反动作线圈断电后反动作气路仍然是接通的,将会一直维持到给正动作线圈通电为止。这相当于“自锁”。 基于两位五通双电控电磁阀的这种特性,在设计机电控制回路或编制PLC程序的时候,可以让电磁阀线圈动作1~2秒就可以了,这样可以保护电磁阀线圈不容易损坏。
单电控:即只有一个电磁线圈,一般用在2位3通电磁阀,线圈电压等级一般采用DC24V、AC220V等。 两位三通电磁阀分为常闭型和常开型两种,常闭型指线圈没通电时气路是断的,常开型指线圈没通电时气路是通的。 常闭型两位三通电磁阀动作原理:给线圈通电,气路接通,线圈一旦断电,气路就会断开,这相当于“点动”。 常开型两位三通单电控电磁阀动作原理:给线圈通电,气路断开,线圈一旦断电,气路就会接通,这也是“点动”。","IndustryTypeName":"泵閥"},{"ID":"1998","Title":"風開閥和風關閥的作用和區別?","Detail":"風開閥和風關閥的作用和區別?请高手详细的解释一下","FromUserID":"17793","UserName":"vivi12","FromCompanyID":"9756","CompanyName":"浙江兴旺宝明通网络有限公司","FromName":"ybzhan","ToID":"21","ExpertName":"儀表网问答小助理","IndustryType":"3992","Linkman":"孤独剑5g","Telphone":"0571-87756393/9()","Email":"471444022@qq.com","Sort":"0","IsShow":"1","Flag":"1","CanPost":"0","CreateTime":"2012/11/15 11:19:36","HitNumber":"4703","Answer":"就是气开阀(给气开)和气关阀(给气关),一般是用4-20毫安信号控制阀的开关,气开阀是4毫安对应的关,20毫安对应的阀门开度最大,气关阀反之。调节阀有故障开(FO)、故障关(FC),有正作用、反作用。举个例子:阀门装在储罐的进口管道,我们用阀门控制储罐液位,当阀门开度增大,液位升高,正作用,反之,阀门装在储罐的出口管道,阀门开度增大,液位降低,反作用。","IndustryTypeName":"泵閥"},{"ID":"3935","Title":"單脈沖水表、雙脈沖水表和三脈沖水表的區別是什麽?","Detail":"單脈沖水表、雙脈沖水表和三脈沖水表的區別是什麽?","FromUserID":"89718","UserName":"yyznkj","FromCompanyID":"70610","CompanyName":"广州市永源智能科技有限公司","FromName":"许工","ToID":"91","ExpertName":"何守柱","IndustryType":"3991","Linkman":"许工","Telphone":"86-020-85272191","Email":"yyznkj@126.com","Sort":"0","IsShow":"1","Flag":"1","CanPost":"0","CreateTime":"2015/8/27 15:17:03","HitNumber":"4505","Answer":"单脉冲表为1根信号线,1根公共线,只能测正累计。双脉冲表为2根信号线,2根公共线,只能测正累计。三脉冲表为3根信号线,1根公共线,既能测正累计,又能测负累计。","IndustryTypeName":"流量儀表"},{"ID":"3913","Title":"預付費水表遠傳水表原理","Detail":"智能预付费水表远传水表使用原理?","FromUserID":"82170","UserName":"nbyjsb","FromCompanyID":"63598","CompanyName":"宁波优静水表有限公司","FromName":"赵庆昌","ToID":"91","ExpertName":"何守柱","IndustryType":"3991,6832,3992,3989,3982,6371","Linkman":"赵庆昌","Telphone":"86-0574-27808011","Email":"971787223@qq.com","Sort":"0","IsShow":"1","Flag":"1","CanPost":"0","CreateTime":"2015/5/20 14:52:11","HitNumber":"4259","Answer":"远传水表是在总线制水表的基础上加装了无线传输模块,通过信号把水表数据传输到远传抄表系统。一般无线远传水表可以实现远程抄表、远程开阀、关阀等。","IndustryTypeName":"儀表上游,电工儀表,流量儀表,泵閥,系统集成及工控,数显儀表"},{"ID":"3903","Title":"電磁流量計測河水采用什麽的電極?","Detail":"電磁流量計測河水采用什麽的電極?","FromUserID":"17793","UserName":"vivi12","FromCompanyID":"9756","CompanyName":"浙江兴旺宝明通网络有限公司","FromName":"ybzhan","ToID":"45","ExpertName":"王朝霞","IndustryType":"3991","Linkman":"ckl1990","Telphone":"0571-87756399","Email":"873582202@qq.com","Sort":"0","IsShow":"1","Flag":"1","CanPost":"0","CreateTime":"2015/4/15 17:49:44","HitNumber":"4250","Answer":"如果是一般的河水,橡胶内衬不锈钢电极就可以了。我们专业供應13917289167,欢迎来电选购。","IndustryTypeName":"流量儀表"},{"ID":"2083","Title":"電容式壓力變送器量程調校怎麽調?","Detail":"如果一个电容式压力变送器器量程的量程式0~6Mpa,想改到0~4Mpa怎么改啊??
或相反把一個0~4Mpa改成0~6Mpa的怎麽改啊??謝謝!!!
手动调校那个小按钮怎么调校!!!","FromUserID":"17793","UserName":"vivi12","FromCompanyID":"9756","CompanyName":"浙江兴旺宝明通网络有限公司","FromName":"ybzhan","ToID":"21","ExpertName":"儀表网问答小助理","IndustryType":"3964","Linkman":"程小姐","Telphone":"0571-87756393/9()","Email":"471444022@qq.com","Sort":"0","IsShow":"1","Flag":"1","CanPost":"0","CreateTime":"2012/12/12 13:23:44","HitNumber":"4061","Answer":"有手操器就可以改啊,当然表头改过之后,组态上面要做相对应的更改。还想问一下各位师傅们,如果量程范围是0-4MPa的,能改为0-6吗?","IndustryTypeName":"電子元器件"},{"ID":"861","Title":"PH計溫度補償怎麽理解","Detail":"一般在使用PH计的过程中,都会出现温度补偿范围,怎么理解?
","FromUserID":"17793","UserName":"vivi12","FromCompanyID":"9756","CompanyName":"浙江兴旺宝明通网络有限公司","FromName":"ybzhan","ToID":"21","ExpertName":"儀表网问答小助理","IndustryType":"3993","Linkman":"张先生","Telphone":"0571-87756393/9()","Email":"543198319@qq.com","Sort":"0","IsShow":"1","Flag":"1","CanPost":"0","CreateTime":"2011/12/12 15:27:39","HitNumber":"3901","Answer":"采纳楼下网友小沫的答案,谢谢支持。","IndustryTypeName":"溫度儀表"}]