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美國FLOWLINELG10LG-1LG11導波雷達液位計
美國FLOWLINE LG10 LG-1 LG11導波雷達料位計是依據時域反射原理(TDR Time Domain Reflectometry)為基礎的雷達料位計,時域反射原理首先是用于通訊電纜的故障檢測,今天我們將其成功應用于工業測量,電磁脈沖以光速沿鋼纜或探棒傳播,當遇到被測介質表面時,部分脈沖被反射形成回波并沿相同路徑返回到脈沖發射裝置,發射裝置與被測介質表面的距離同脈沖在其間的傳播時間成正比,回波的極性和振幅取決于上層介質與下層介質的介電常數εr。一般來講,上層的介質通常為氣體,其介電常數接近εr1.0,下層被測介質的介電常數較高。 調頻連續波雷達料位計是依據調頻連續波原理(FMCW Frequency Modulated ContinuousWave)為基礎的雷達料位計,這區別于脈沖式雷達,并因其*的性能而廣泛應用于工業領域。使用線性調頻高頻信號,發射頻率隨一定時間間隔(掃描頻率)線性增加,頻率范圍為8.5G~9.9G,波長約為3cm。由于發射頻率是隨著信號傳播的時間變化的,與反射物體距離成比例的低頻信號頻率f是由當前發射頻率與接收的反射頻率的差值獲得的。雷達料位計適用于酸堿儲罐、漿料儲罐、固體顆粒、小型儲油罐。各類導電、非導電介質、腐蝕性介質。如煤倉、灰倉、油罐、酸罐等雷達料位計的優點
● 雷達料位計是非接觸式測量或TDR導波式測量
● 雷達料位計應用電磁脈沖進行快速測量,精度高,抗力強
● 耐腐蝕(探頭大多采用316不銹鋼或PVDP等材料)
● 耐壓高(40Kg/cm2)
● 耐溫高(200℃)
雷達料位計的注意事項
● 雷達料位計對于安裝空間有一定的要求
● 注意介質的介電常數,并依據介電常數的大小選擇適合的型號
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 |
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