Foxboro 电浮筒液位计

1、Product Specifications12.2012PSS EML0710 G-(en)244LD LevelstarIntelligent Buoyancy Transmitter for Liquid Level, Interface and Density with Torque tube HART-Version The intelligent transmitter 244LD LevelStar is designed to perform continuous measurements for liquid level, interfa- ceordensityofliquidsintheprocessofallindustrialapplications.ThemeasurementisbasedontheprovenArchime- desbuoyancyprincipleandthusextremelyrobustanddurable.Measuringvaluescanbetransferredanaloganddigi- tal. Digital comm

2、unication facilitates complete operation and configuration via PC or control system. Despite extre- me temperatures, high process pressure and corrosive liquids, the 244LD measures with consistent reliability and high precision. It is approved for installations in contact with explosive atmospheres. The 244LD LevelStar combines the abundant experience of FOXBORO ECKARDT with most advanced digital technology.FEATURES HART Communication, 4 to 20 mA Configuration via FDT-DTM Multilingual full text

3、graphic LCD IR communication as a standard Easy adaptation to the measuring point without calibration at the workshop Linear or customized characteristic 32 point linearisation for volumetric measurementBackdocumentation of measuring point Continuous self-diagnostics, Status and diagnostic messages Configurable safety value Local display in %, mA or physical units Process temperature from 196 C to +500 C Materials for use with aggressive media Micro sintermetal sensor technology2244LDPSS EML0710

4、 G-(en)PACTware: OperationFDT-DTM: ConfigurationSupply via power supply unit with communication; Ex? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?22Cover for terminal compartment 24Security lock for EEx d version 38Cable gland (for cable 6 to 12 mm) 39Plug 50Overvoltage protection (if present)CONNECTIONS, OPERATIONAL ELEMENTS45Terminal “+“wire cross- 46Terminal “section up 47Ground terminalto 2,5 mm Test sockets 2 mm integrated in terminals 48External ground connection? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

5、 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?!? ? ? ? ? ? ? ? ?!?“? ? # ? “? ? ? ? ? ? ? ? ? ? ? ? ?$ ? ? ? %not ExFurter supply circuits see Master Instruction document.PSS EML0710 G-(en)244LD3TECHNICAL DATA Data refer to the sensor material Type 316L (1.4404) Explosion protection certificates must be observed!Input / Output Measuring ranges . . . . . . . . 50 mm to 50 m upper and lower range value continuously adjustable

6、Standard lenghts of Displacer (204DE) . . . . . . . . 350 . 3000 mm, 14 . 120 in; further lenghts on request Weight of displacer1). . . . . . max. 25 NMeasuring span. . . . . . . . . . 2. 20 N contin. adjustable (to 1 N on request) Span ratio Turn-down. . . . . . . . . . . . . . 1:1 . 1:10 (1:20 on request)Accuracy2). . . . . . . . . . . . . 0.2 % ; increased accuracy with customized adjustment Transfer function . . . . . . . . . linear or customized with up to 32 setpointsConfiguration - with F

7、DT-DTM per HART protocol - via 2-wire connection 4 . 20 mA - via IR communication - with multi-lingual, full graphic LCD display with %, mA, physical units and 2 from the outside-to-use buttonsLoad. . . . . . . . . . . . . . . . . RBmax= (US 12 V) / 23 mACommunication HART Connection . . . . . . . . . . . . . Two-wire system Supply voltage US3). . . . . . . 12 V + Rb*0.025 ARb is the total burden resistor for lines, HART measure- ment resistor and communication. Current sink . . . . . . . . . .

8、. . . max. 24 mA Signal range . . . . . . . . . . . . 4 to 20 mA Operating range. . . . . . . . . . 3.8 to 20.5 mA (acc. NE43)Critical error alarms in the 2-wire Communication . . . . . . . . . . 21 mA HART Protocol - 2-wire . . . . . . . . . . . . . . . . 1200 Baud, HART compliant - IR communication. . . . . . . 19200 Baud Communication Hardware - Handterminal . . . . . . . . . . HT 375/475 - PC Software . . . . . . . . . . . WINxx and FDT/DTM1)For measurement of interface or density: weight 25

9、 N + buoyant force at lowest density 2)Accuracy acc. ANSI / ISA - S51.1 - 1979 3)Us (max) with explosionproof device +70 C . . . . . . twice the value Process temperature . . . . . . +70 C 8)For max. measuring span? ? ?4244LDPSS EML0710 G-(en)Material, Pressure Rating sandwich-mounted between displacer chamber 204DC and cover flange 204BCF, with displacer 204DE6244LDPSS EML0710 G-(en)Comparison of MaterialCodeWNrDINRemarksequivalent to St 35.8 III1.0305 1.0345EN 10 216-2ASTM A 106 Gr.8C 22.81.0460EN 10 273VdTV - Wbl. 350/3ASTM A 105 X6 CrNiMoTi 17 12 21.457117 440 ASTM Typ 316Ti X2 CrNiMo 17 13 21.4404ASTM Typ 316L X2 CrNiMo 18 14 31.4435 X5 CrNiMo 17 13 31.4436 NiMo 16 Cr 15 W2.481917 744equ. to Hastelloy C-276 VdTV - Wbl. 400UNS N 12 276 NiCr 15 Fe2.481617 742Inconel 600 VdTV - Wbl. 305UNS N 06600 NiCr 22 Mo 9 Nb2.485617 744Inconel 625 VdTV 499UNS N 06625 NiCr 21 Mo2.485817 744Inconel 825 VdTV 432UNS N 0

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