美国flowlinelg10lg-1lg11导波雷达液位计 产品详情
美国flowline lg10 lg-1 lg11导波雷达料位计是依据时域反射原理(tdr time domain reflectometry)为基础的雷达料位计，时域反射原理首先是用于通讯电缆的故障检测，今天我们将其成功应用于工业测量，电磁脉冲以光速沿钢缆或探棒传播，当遇到被测介质表面时，部分脉冲被反射形成回波并沿相同路径返回到脉冲发射装置，发射装置与被测介质表面的距离同脉冲在其间的传播时间成正比，回波的极性和振幅取决于上层介质与下层介质的介电常数εr。一般来讲，上层的介质通常为气体，其介电常数接近εr1.0，下层被测介质的介电常数较高。调频连续波雷达料位计是依据调频连续波原理(fmcw frequency modulated continuouswave)为基础的雷达料位计，这区别于脉冲式雷达，并因其优越的性能而广泛应用于工业领域。使用线性调频高频信号，发射频率随一定时间间隔(扫描频率)线性增加，频率范围为8.5g～9.9g，波长约为3cm。由于发射频率是随着信号传播的时间变化的，与反射物体距离成比例的低频信号频率f是由当前发射频率与接收的反射频率的差值获得的。雷达料位计适用于酸碱储罐、浆料储罐、固体颗粒、小型储油罐。各类导电、非导电介质、腐蚀性介质。如煤仓、灰仓、油罐、酸罐等雷达料位计的优点
●雷达料位计是非接触式测量或tdr导波式测量
●雷达料位计应用电磁脉冲进行快速测量，精度高，抗干扰能力强
●耐腐蚀（探头大多采用316不锈钢或pvdp等材料）
●耐压高（40kg/cm2）
●耐温高（200℃）
雷达料位计的注意事项
●雷达料位计对于安装空间有一定的要求
●注意介质的介电常数，并依据介电常数的大小选择适合的型号
echowave®lg10-11 guided wave liquid level transmitterrange: rod & coaxial: 9.8’ (3m), cable: 18’ (5.5m)
accuracy: ± 3mm
dead band: top: 4” (10cm), bottom: 2” (5cm)
repeatability: < 2mm
resolution: < 2mm
configuration: webcal™pc, windows®, usb 2.0
supply voltage: 10-30 vdc
max. consumption: < 50ma @ 24 vdc
signal output: 4-20ma, 3-wire
signal fail-safe: 4ma, 20ma, 21ma, 22ma or hold last
dielectric: > 1.8
process temp.: f: -40º to 302º, c: -40º to 150º
ambient temp.: f: -40º to 185º, c: -40º to 85º
pressure: -14.5 to 250 psi, (-1 to 17 bar)
enclosure rating: nema 4
encl. material: aluminum
feed through mat.: 316l ss & peek
conduit entrance: (1) 1/2” npt connector
probe material: rod: & coaxial: 316l ss, cable: 316 ss
process mount: 3/4” npt (3/4” g)
classification: general purpose
certification: csa, nrtl
compliance: ce, crn, rohs
p/ndescription
lg10-0003-00-036 36″ (.9m) rod, 3/4″ npt, w/o fob
lg10-0003-01-036 36″ (.9m) rod, 3/4″ npt, w/fob
lg10-0013-00-036 36″ (.9m) rod, 3/4″ g, w/o fob
lg10-0013-01-036 36″ (.9m) rod, 3/4″ g, w/fob
lg10-0003-00-072 72″ (1.8m) rod, 3/4″ npt, w/o fob
lg10-0003-01-072 72″ (1.8m) rod, 3/4″ npt, w/fob
lg10-0013-00-072 72″ (1.8m) rod, 3/4″ g, w/o fob
lg10-0013-01-072 72″ (1.8m) rod, 3/4″ g, w/fob
lg10-0003-00-118 118″ (3m) rod, 3/4″ npt, w/o fob
lg10-0003-01-118 118″ (3m) rod, 3/4″ npt, w/fob
lg10-0013-00-118 118″ (3m) rod, 3/4″ g, w/o fob
lg10-0013-01-118 118″ (3m) rod, 3/4″ g, w/fob
lg10-1003-00-036 36″ (.9m) coaxial, 3/4″ npt, w/o fob
lg10-1003-01-036 36″ (.9m) coaxial, 3/4″ npt, w/fob
lg10-1013-00-036 36″ (.9m) coaxial, 3/4″ g, w/o fob
lg10-1013-01-036 36″ (.9m) coaxial, 3/4″ g, w/fob
lg10-1003-00-072 72″ (1.8m) coaxial, 3/4″ npt, w/o fob
lg10-1003-01-072 72″ (1.8m) coaxial, 3/4″ npt, w/fob
lg10-1013-00-072 72″ (1.8m) coaxial, 3/4″ g, w/o fob
lg10-1013-01-072 72″ (1.8m) coaxial, 3/4″ g, w/fob
lg10-1003-00-118 118″ (3m) coaxial, 3/4″ npt, w/o fob
lg10-1003-01-118 118″ (3m) coaxial, 3/4″ npt, w/fob
lg10-1013-00-118 118″ (3m) coaxial, 3/4″ g, w/o fob
lg10-1013-01-118 118″ (3m) coaxial, 3/4″ g, w/fob
lg11-2003-00-216 216″ (5.5m) cable, 3/4″ npt, w/o fob
lg11-2003-01-216 216″ (5.5m) cable, 3/4″ npt, w/fob
lg11-2013-00-216 216″ (5.5m) cable, 3/4″ g, w/o fob
lg11-2013-01-216 216″ (5.5m) cable, 3/4″ g, w/fob