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 Transmitter

Range: 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/N	DESCRIPTION
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