Level Limit Switch liquiphant FDL 30/31 ... - …

1 TechnicalInformationTI 185F/00/enFeatures and Benefits Operational safety: Monitoring signalcabling for short-circuits andbreakage, function monitoring of theelectronic insert, the piezocrystal unitand the sensor tines are continuously monitoredfor corrosion. Universal application: Operates safelywith no maintenance in all types ofliquid and is independent ofturbulence, electrical properties,solids and gas contents, foam orbuild-up. Accurate switching: A constantswitchpoint with millimetre accuracywithout the need for calibration. Vibration resistant: Thanks to itsimproved and patented driveelectronics, the liquiphant isunequalled in its tolerance to externalvibrations. Proven in practice: One millionvibration Limit switches Level Limit SwitchesThe safety liquiphant FDL sensors arealways used when increased safety isrequired, for Limit detection inexplosion hazardous areas. The sensorsare connected to the switching unitsFTL 320 / 370 / FDL sensors are used forlevel detection in all types of liquid.

2 Theintrinsically safe sensor circuit (EEx ia)means that they are approved for use inexplosion hazardous areas. When usedwith the Nivotester FTL switching unit,the sensors can monitor the upper andlower Level limits in tanks and vesselsand are suitable for all liquids with temperatures between 40 C and +150 C( 40 F and +300 F) with viscosities up to 10,000 mm2/s(cSt) with densities greater than plastic-coated or Hastelloy versionsare available for particularly Limit Switchliquiphant FDL 30/31 and FDL 35/36 Safety sensor for all vibration Limit Switch liquiphant Ex area (EEx ia) and with separate terminalchamber for extremely rugged IIwith aluminium,plastic orstainless steelhousing for standardapplications(FDL 30, FDL 31): Level sensors As compact version orwith extension tube With various processconnectionsLiquiphant IIwith aluminiumhousing T3 havingseparate terminalchamber for extremelyrugged conditions(FDL 35, FDL 36).Hauser+EndressNothing beats know-howMeasurement PrincipleOperating Principle of the LiquiphantThe sensor in the form of a tuning fork ismade to vibrate at its resonantfrequency by a piezocrystal drive resonant frequency changes whenthe sensor is immersed in the frequency change is detected andthen converted into a switching signalby the Nivotester FTL switching Switch -over mode for minimum ormaximum detection enables the levellimit Switch to be used for eachapplication in the required wide range of application-specificdesigns, process connections and highcorrosion-resistant materials allows limitdetection of all types of liquids in tanksand few examples are given here.

3 Top mounting to monitor themaximum an optional sliding sleeve to setthe switchpoint mounting to monitor theminimum in a pipe as dry-runprotection for the complete Level Limit Switch consistsof the sensor and the switching versions liquiphant FDL 30 Sensor as a compact version liquiphant FDL 31 Sensor with extension tubePolyester housing (F10)Aluminium housingwith epoxy resin coating (F6)or stainless steel housing (F8).Protection: IP 66 liquiphant FDL 35 Sensor as a compact version liquiphant FDL 36 Sensor with extension tubeAluminium housing withseparate terminal chamber (T3) Electronics chamber and terminal chamber are completely separated from one another to ensure operation under extremely rugged conditions. Interference-immune to electromagnetic fields up to 30 overspill protection to VbF or WHG(Germany) consists of:Sensor liquiphant FDL 30 / 31 / 35 / 36andSwitching unit NivotesterFTL 320 / 370 / 372 Switching units with intrinsically safeEEx ia sensor circuitsin Racksyst format: Nivotester FTL 370, single channel unit Nivotester FTL 372, two-channel unitIn Minipac format: Nivotester FTL 320 The Limit Switch withgreater operationalsafety, even for liquidswhich are adhesive,causing build-up,corrosive, agitated,sparkling or SystemEXEXEXN ivotesterFTLEx iLiquiphant FDLN ivotester switchingunits FTL 320/370/372 liquiphant sensorsFDL 30/31 orFDL 35/36 Housing F6/F10 Housing T3 Housing F82 VersionsProcess ConnectionsApplication-specific processconnections and designs ensure anideal adaptability to the mountingrequirementsThreaded boss G 1 A or 1" NPTF langes according to variousstandards.

4 DIN, ANSI, diameters from DN 32or 11/4"For particularly hygienic requirements, food processing: Milk pipe couplingTriclamp couplingWeld-in socket for flush mountingPolished fork and extension connection materialsStainless steel 316 Ti ( ) orHastelloy C ( ), the flange versionis also available with an ECTFE (Halar ) coating, extension tube up to6 m (with PFA up to 1 m).Note: The threaded boss andTriclamp process connections(and weld-in socket) are also approvedfor explosion hazardous areas(except for Zone 0 in Germany).220 .. 6000220 .. 6000220 .. 600019 29220 .. 31 / FDL 36 Extension tube versionFDL 30 / FDL 35 Compact versionsThreaded bossPipe couplingTriclamp couplingFlange versionG 1A or DIN 11851, DN 50 ISO 2852, 2"DIN, ANSI, JIS1 - 111/2 NPTB elow:Dimensions of housingwith separateconnectioncompartmentfor FDL 35, :Housing dimensionsfor FDL 30, 3191 104129T3ca. 98ca. 110 86F6, F10F8 86ca. 102ca. 1323 InstallationWhen mounting the liquiphant note that: Vibration of the tines must not beblocked, due to adhering material.

5 If build-up occurs, then ensure asufficient distance to the tank or MountingWhen mounting the sensor in a nozzle,the viscosity of the liquid should betaken into account:1. Generally: The process connection should be flush with the tank With low viscosity liquids: mount the sensor so that the liquid can flow out of the nozzle and uncover the With high viscosity liquids nozzle max. 60 mm long (with a 1"-nozzle). Recommended: A nozzle with a larger diameter should be Tuning fork in pipe: min. DN 50 with low viscosity Mounting When used for dry-run protection ofpumps, the liquiphant should bemounted in a vertical pipe. When determining the length of thenozzle, take the pipe diameter intoaccount. When mounted in a horizontal pipe,partial pipe filling can be detected ifthe correct nozzle length is with plastic coating Maximum operating temperaturefor ECTFE 120 C (250 F) andfor PFA 130 C (270 F). The temperature difference T2 - T1between the inner and outer surfacesof the flange must not exceed 60 C(140 F).

6 If necessary, insulate theouter surface of the DN 50(min. 2")max. 60 mmLiquiphant withplastic coating(ECTFE or PFA).T2T1 FDL 30 with housingF6, F8, F10 onlywet and warmcoldmax. 120 Cfor ECTFEmax. 130 Cfor PFAT1T2T2 - T1 max. 60 C110102155 All-Weather Hoodfor housing F6, F10;Made of all-weather hoodprotects the sensorfrom excessivetemperature and fromcondensation formingin the housing whichcan occur with widetemperature a FDL 31,min. length 220 mm,or insulate the humid environmentsor cold media, to avoidcondensate formingwithin the housing:The fork tinesmay not touch the tankor pipe wallor any build-up4 ConnectionThe Nivotester FTL switching unit andthe FEL 37 electronic insert in theLiquiphant FDL sensor are electricallyconnected via commercially availabletwo-core installation cable or via twocores of a multicore Frequency Modulation (PFM)confers high interference immunity onsignal the SwitchpointIf the switchpoint is to be set withmillimetre accuracy, then please refer tothe diagram opposite:1.

7 Top mounting2. Side mounting withthe tines next to each other orabove one another3. Mounting from belowSwitchpoint data are related to water(density 1 g/cm3). For use in extremelylight liquids (liquefied gas - LPG), theswitch on the liquiphant should be set to"Density ".All appropriate regulations must beobserved when laying intrinsically safecabling in explosion hazardous areas!Electrical DataConnection terminals: for max. mm2 Cable entry:see product structureCable resistance: max. 25 per corePower supply: approx. VOperating current: approx. 4 .. 10 mASignal transmission:Pulse Frequency Modulation (PFM)Pulsed current: approx. 10 mA,superimposed on the operating currentExplosion protection: EEx ia II C connection ofthe Nivotester FTLswitching unit to theFDL frequencywith covered andexposed FTL 320 Nivotester FTL 370 FTL 372 Nivotester FTL 37225 mm5 mm75 mm * Switch for liquid density: > forliquefied gas > setting*FEL 37 > > MarkThe device fulfils the legalrequirements of the following ECGuidelines:Guideline 89/336/EC(Electromagnetic compatibility),Guidelines 73/23/EC and 93/68/EC(Low Voltage Appliances).

8 Electromagnetic compatibility (EMC):Immunity to EN 50082-2and industrial standard NAMUR,at field strength 10 V/m (FDL 30, 31),at field strength 30 V/m (FDL 35, 36).Emission to EN general information onelectromagnetic compatibility(test methods, installation hints)see TI 241F/00 SleeveHigh pressure sleeve for liquiphant withextension tube FDL 31 / pressure in vessels up to 40 infinitely variable setting of theswitchpoints during to 6000 mm extension tube(without coating).Length tolerancesmax. 1 m tube length: + 0 mm / 5 mmmax. 3 m tube length: + 0 mm / 10 mmmax. 6 m tube length: + 0 mm / 20 mmOperating DataOperating data in tank:max. 40 bar (600 psi), see fig. belowTest pressure: max. 60 bar (900 psi)Operating temperature in tank: 40 +150 C ( 30 F .. +300 F)Ambient housing temperature: 20 +70 C ( 4 F .. +158 F)Liquid viscosity: max. 10000 mm2/sMinimum density of liquid: g/cm3 Switching hysteresis: approx. 5 mmSwitching delay:when covered approx.

9 S,when exposed approx. 1 sFail-safe mode : selectableSwitching display:LED on the electronic insertSensor Materials Stainless steel (~AISI 316 Ti),polished as required Stainless steel (~AISI 316 Ti),with ECTFE or PFA coating, togetherwith coated flanges Hastelloy C ( )Certificates Certificate of conformity (CENELEC)KEMA No. Ex - German national test certificate:(Zone 0, overspill protection to VbF)PTB No. III B/S 2243 F General type approval (DIBt) maximumpermissible temperatureT1 at the housingdepends on theoperating temperatureT2 in the C = ( + 32) FTechnicalData21TT2T0 C50 C100 C150 C0 C50 C1T70 C20 C40 CEEx ia IIC T6max. 65 CPe2T2T150 C100 C0 C25 bar40 barPe1 bar40 CThe maximumpermissible pressure pein the vessel dependson the temperature T2in the bar = psi~7022 Weld-in socketfor FDL 30/35 with G 1A thread for No. 215159-0000929214G 1 ALoose flangesfor FDL 30/31 orFDL 35/36 High pressure sleevefor FDL 31, FDL G11/2A or 11/2 - 11 1/2 NPTthreaded bossand bright 65-0, (AISI 316 Ti)6 Product StructureOtherprocess connections,materials,electronic inserts,housingson requestFDL 31, FDL 36 CertificateRVersion for non-hazardous areasG EEx ia IIC T6 (CENELEC)FPTB, EEx ia IIC T6 (Zone 0) Overspill protection to VbF, WHG0FM, IS, Class I,II,II, Div.

10 1, Groups A,B,C,D,E,F,GSCSA, IS, Class I,II,III, , Groups A,B,C,D,E,F,GYOther certificatProcess connection, materialGR2 Threaded boss G1A, AISI 316 Ti ( )GN2 Threaded boss 1" NPT, AISI 316 TiSR2 Sliding sleeve G11/2A, AISI 316 TiME2 Pipe coupling DIN 11851 DN 50, AISI 316 Ti not with certificate F;TE2 Triclamp (ISO 2852) 2", AISI 316 Ti fork surface finish B = flanges see separate table on next pageYY9 Other process connectionFork surface finish AStandard (material same as process connection)BPolishedprocess connection GR2, GN2, ME2, TE2and with extension tube G or 4 Sensor length, extension tube materialPlastic coating with flanges onlyMin. length 220 mm, max. length 6000 mmmm / inA/ 1 AISI 316 Ti ( )B/ 2 AISI 316 Ti/ECTFE coated (with flange only)C/ 3 Hastelloy CG / 4 AISI 316 Ti, polishedY Special length, special material ( PFA) Electronics 7 FEL 37, two-wire PFM transmissionHousing, cable entryas FDL 30 / FDL 35 see aboveProduct designation state length in mm or inchFDL liquiphant FDL 30 Compact version liquiphant FDL 35 Compact versionFDL 30, FDL 35 CertificateRVersion for non-hazardous areasG EEx ia IIC T6 (CENELEC)FPTB, EEx ia IIC T6 (Zone 0) Overspill protection to VbF, WHG0FM, IS, Class I,II,II, Div.