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智能电磁流量阀


                     产品名称:电磁流量阀
                      产品系列:流量阀                                                                                    
 
 

 


结构与用途
   LDG系列电磁流量计是一种电磁感应式流量仪表,是集信号检测及微电子智能化技术与一体的高新机电产品。可根据安装方式分为管道式和插入式两大类,也可以 根据显示方式分为现场显示器(一体型)和分体形及远传显示器4-20mA输出型(现场不显示)三种结构,它能测量导电液体介质,包括酸、碱、盐等强腐蚀性 液体和纸浆、泥浆、废污水及固体两相悬浮的体积流量。产品广泛应用于石油、化工、治金、纺织、食品、制药、造纸等行业及环保、市政管理、水利建设、河流灌 溉等领域。

    
Structure and use


   LDG series electric-magnet flow meter is a kind of electric-magnet meter.has companied the signal check and micro-electric intelligentize.Can be departs two kind by the pipe style and cut in style.And according the display way to separate the scene monitor shower and two body long distance monitor,4-20mA export three styles, It can detect the flow quantity of electrice conduction liquid.including acid,alkai,salt and other strong caustic liquid and pepper pulp.mud mplp.and sewage two-phase liquid volume flux.Products widely use in petrol,chemical,metallurgy,spin,food,medicine,paper making and other engineer.And protect the environment,town plan-ning manage,
irrigation building.river irrigate and other domain.

工作原理
    电磁流量计所依据的基本理论是法拉第电磁感应定律。当导体切割磁力线运动时,导体内将产生感应电动势。根据原理,可测量管内流动的导电流体的体积,如图一 所示,导电流体流动的方向与电磁场的方向垂直,在导管垂直方向施加一个交变的磁场并在有绝缘衬里的导管内壁两侧安装一对电极,两电极的连线既与导管轴线垂 直,又与磁场方向垂直、当导电液体流经导管时,因切割磁力线,两个电极就产生感应电动势UE传感器导管内径D是固定的,通过励磁线圈的励磁电流是恒定值 时,磁感应强度B也是恒定值,因此,平均流速V或流量QV(QV=D/4·V)与感应电动势UE的大小成比例关系。

Work principal

     The basic theory is Faraday electromagenetism.when the conductor cut the magnet,when the conduet get the moving electromotve force.According this principal,can be test the volume of the liquid,such a picture 1,the direction of current is vertical whit the magnet direction.the sensor pole vertical with the magnet way and current way,when the conduct liquid flow the pipe,because cut the magnet line,the two head of the pole will produce the electromotive force UE.The bore is stable,the excitation current is stable,the feeling intensity B of the magentic is also stable,So the average speed V or quantity QV is ratio with induce electromotine force UE.
技术参数
流量测量范围及量程比:流量测量范围见表3    量程比为:1:10-1:20
流速范围:0.3-10m/S
介质导电率:>5μs/cm
测量精度:0.5%FS1.0%FS(0.2%FS系V>0.5m/s的指定段)
显示方式:LCD显示瞬时流量4位,累计流量8位
压力:1.6Mpa;2.5Mpa;6.4Mpa;16Mpa;25Mpa;32Mpa;40Mpa;
使用环境:温度-20℃-+50℃  湿度≤85%
输出信号:频率输出0-5kHz
          HART协议
          电流输出4-20mA
          RS-485通讯接口
断电数据保存时间:10年
电源:220VGA±15% 24VDC±5%(可选)
功耗:≤15VA
机械震动频率:≤55Hz 振幅:≤0.15mm
平均无故障工作时间:MTBF=30000h
防护等级:IP67、IP68(只适用于分体型)
衬里材料:聚氨酯橡胶、氯丁橡胶、聚四氟乙烯、F46
电极材料:316L,哈氏合金HB;哈氏合金HC;特殊材料(如:钛、钽、铂等稀有金属材料)

Technique parameter 

 The flow test range ratio of measurement range: the range of the liquate should check the table
The ratio of range is 1:10-1:20
Speed of flow range:0.3-10m/S
Matcrial conduct:>5μs/cm
Test precision:0.5%FS1.0%FS(0.2%FS(v>0.5m/s point part)
Display way:Led instantaneous is four place,accumulate is 8 step
Pressure:1.6Mpa: 2.5Mpa: 6.4Mpa: 16Mpa: 25Mpa: 32Mpa:
Work environment:temperature20℃-+50℃ humid≤85%
Transport signal:frequency export0-5kHz
                 HART aggrement
                 Current export 4-20mA
                 RS-485 communication joint head
Date save time when have no power
power:220VGA±15% 24VDC±5%(selected)
power:≤15VA
Machine vibration frequency:≤55Hz swing:≤0.15mm
Average no fault time:MTBF=30000h
Defend grade:IP67、IP68(only suit depart body)
Liner material:ammonia rubber,neoprene rubber,PTFE,F45
Pole material:3161,ah alloy HB,Ah alloy HC,special material(such as titanium,tantalum,platinum and other special material)

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