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智能电磁流量计
一,结构与用途Structure and use
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于一体的高新家电产品。可根据安装方式分为管道式和插入式两大类,也可以根据现实方式分为现场显示器(一体型)和分体型及远传显示器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
、废污水及固液两相悬浮液的体积流量。产品广泛应用于石油、化工、冶金、纺织、食品、制药、造纸行业及环保、市政管理、水利建设、河流灌溉等领域。
LDG series electric-magnet flow meter is a kind of elactric-magnetmeter. has companicd the signal check a dl mirnrcloctric intclligcntizc. Can be departs two kind by the pipe style and cut in style. And according the display way to scparuc the seen nwnitcw shower and two body kmg distance monitor, 4-2OmA export throe styles It can dclcd the now quantity of clctlric cronducuon liquid. including acid, alkali. salt and othcr strong caustic liquid and pepper pulp, mud mplp. and sewage two-phasc liquid volume flux.Products widely use in petrol. chemical, metallurgy. spin, food, medicine,paper making and other engineer. And protect the environment. town planning manage. imgaIiun nuiluing. nvcr imga*c and oxncr wmain.
二,工作原理Work Principal
电磁流量计所依据的基本理论是法拉第电磁感应定律,可测量管内流动的导电流体的体积,如图1所示,导电流体流动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,两电极的连线即与导管轴线垂直,又与磁场方向垂直,当导电液体流经导管时,因切割磁力线,两个电极上就产生感应电动势UE。
The basic theory is Faraday ekctromagnetism, when the conductor cut
the magnet, when the conduct get the moving eloctnomtxis a (twee. According
this principal, can be test the volume of the liquid, such a picture 1. the
direction of current is vertical with 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.
三,技术参数Technique parameter
1,流量测量范围及量程比:流量测量范围见表3
量程比为:1:10~120
2,流速范围:0.3-10m/s
3,介质导电率:》5us/cm
4,测量:0.5%FS1.0%(0.2%FS系V>0.5m/s的指定段)
5,显示方式:LCD显示瞬时流量4位,累计流量8位
6,压力:1.6Mpa;2.5Mpa;6.4Mpa;16Mpa;25Mpa;32Mpa;40Mpa;
使用环境:温度-20~ +50摄氏度 湿度小于等于85%
7,输出信号:频率输出0-5KHz HART协议 电流输入4-20mA RS-485通讯接口
8,断点数据保存时间:10年
9,电源:220VGA正负15% 24VDC正负5%(可选)
10,功耗:小于等于15VA
11,机械震动频率:小于等于55Hz 振幅:小于等于0.15mm
12,平均无故障工作时间:MTBF=30000h
13,防护等级:IP67、IP68(只适用于分体型)
14,衬里材料:聚氨酯橡胶、氯丁橡胶、聚四氟乙烯、F46
15,316L哈氏合金HB:哈氏合金HC:特殊材料(如:钛,铂等稀有金属材料)
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