KROHNE 702 Level Radar User Manual BM702 MBA e

Krohne America Inc Level Radar BM702 MBA e

Contents

Manual

© KROHNE 07/00 7.02230.31.00Variable area flowmetersVortex flowmetersFlow controllersElectromagnetic flowmetersUltrasonic flowmetersMass flowmetersLevel measuring instrumentsCommunications technologyEngineering systems & solutionsInstallation and operating instructionsLevel-RadarBM 702
2 Installation and operating instructions BM 702  (07/00)Software HistoryIntroduction Signal converter User program InstructionsMth./Yr Hard-ware Firmware Hard-ware Operatingsystem Soft-ware Device Userprogram04/00 BM 702 7.00PREnn PC DOS 5.0and higher PC-CAT3.02PRE0105/00 7.02221.11+Suppl.instructionWin95/98/NT PC-CATWin 4.00 Online helpTest versions for BM 702.07/00 BM 702 7.00 PC DOS 5.0and higher PC-CAT3.01 07/00 7.02221.11+Suppl.instructionWin95/98/NT PC-CATWin 4.00 Online helpFirst series version for BM 702.Items included with supplyThe scope of supply includes, in the version as ordered:• Signal converter bolted to waveguide window and antenna; optionally: antennaextension, sunshade (with fastening material in each case)• Shielding material with tightening strap (not for the US market)• Installation and operating instructions plus instruction card• Report on factory settings for the signal converter• Certification and approval documents, unless reproduced in the device documentationInstallation material (stud bolts, flange gasket and cabling) not supplied, to be provided bycustomer!
3 Installation and operating instructions BM 702  (07/00)Contents1Handling and storage..................................................................................32Installation....................................................................................................42.1 Field assembly..................................................................................................42.2 Mechanical installation.....................................................................................53Electrical connection...................................................................................74Setting the parameters...............................................................................85Maintenance, error handling....................................................................186Safety information.....................................................................................197Technical data (extract)............................................................................208BM 702 Level-Radar Type code...............................................................229Parameter check list.................................................................................24Product liability and warranty:The BM 702 level gauge is designed solely for measuring the level, distance, volume andreflection of liquids, pastes, slurries, particulate materials and solids.The BM 702 level gauge does not form part of an overfill protection system as defined inthe WHG (= German water pollution regulation).Local codes and regulations apply to its use in hazardous areas.Responsibility as to suitability and intended use of these level gauges rests solely with theuser.Improper installation and operation of our level gauges may lead to loss of warranty.In addition, the "General conditions of sale", form the basis of the purchasing contract.If you need to return the level gauge to the manufacturer or supplier, please refer to theinformation given in Section 5i1 Handling and storageSafety adviceDepending on the version, the device will weigh between approx. 5 kg and 30 kg. To carry,use both hands to lift the device carefully by the converter housing. If necessary, use liftinggear.When handling the BM 702, avoid hard blows, jolts, impact, etc.When storing the "Wave-Stick" version, make sure that the device is not placed on its sideon the PTFE antenna, as this may cause the rod to bend.
4 Installation and operating instructions BM 702  (07/00)2 InstallationMost of the BM 702 versions are supplied in fully assembled condition. In this case, youmay skip this chapter. However, if a device should be delivered in parts, or parts aresubsequently replaced, the following should be noted.2.1 Field assembly• For any necessary field assembly of theBM 702, all parts are included with thesupply (stud bolts, washers, etc.).• Bolt the waveguide window (flange mount)or distance piece, if supplied loose, to theBM 702. Torque for the sets of 4 Allenscrews M (key size 5 mm): max. 8 Nm ∼0.8 kpm (5.8 ft lbf).• Note: Ensure the upper Teflon plug is keptabsolutely dry and clean! Moisture and dirtwill impair functionability of the BM 702!• Bolt antenna extension to the antenna;torque for the 3 stud bolts A: max. 8 Nm ∼0,8 kpm (5.8 ft lbf).Do not detach bolts H !distance piece (forhigh-temperature versionup to 250°C (482 °F)upper Teflon plugO-ringlower Teflon plugO-ringBM70 Aconnecting flangeantenna extensionantennaMHMAsignal converterVersion:FlangeStick plating(for Hastelloy,StickGasket GasketHornantennaSeparation(Metaglass)Wave-Stick Wave-Stick(PP or PTFE)Flange system 96with horn antennaLP flange systemmax. 2 barmax. 2 bardistance piece(optional)High temperatureplate HornantennaFlangeTi, Ta)PTFE w/o platewith horn antennaBM 702converter
5 Installation and operating instructions BM 702  (07/00)2.2 Mechanical installation Hazardous-duty systems:• The BM 702 Ex is certified in conformity with European Standard for use in Zone 0, 1and 2 hazardous locations (dependent on version).• Attention is drawn to the data and information given on the nameplate of theconverter, the  nameplate of the flange and the specifications in the approvalcertificates.Safety:• Check material compatibility of antenna, extension, flange, gaskets, and PP or PTFE(used in all versions) with the product! See also section 8 "Type code"!Mounting on the tank nozzlea) Devices with horn antenna:The antenna should project out of the nozzle. If necessary, use an antenna extension.Exception: in case of a symmetrical tank fitting.Tank nozzle Tank nozzle Antennaextension     Tank nozzleb) Wave-StickNote the requirements imposed on nozzle diameter and nozzle length:min. 50 mmmin. 200 mmTank nozzlee.g. DN50dia. 40...55 mmVersion forstill wells
6 Installation and operating instructions BM 702  (07/00)c) Purging deviceRemove screw plug ¼" R and screw inscrewed tube joint, e.g. Ermeto ¼" R.Consult “Ex“ specifications relating to thepurging circuit (provided by customer)!Installation on the tank• Do not forget the gasket whenpositioning the BM 702 on the tanknozzle flange. Align BM 702 and gasket,slightly tighten nuts on stud bolts (byhand).• Press  shielding strip C* in the gapbetween tank and BM 702 flanges andsecure with  strap retainer S* (bothitems included with supply).• Strap retainer S* must fit closely andoverlap both flanges.* only required for European radio approvals• Tighten down stud bolt nuts firmly. Thetightening torque is dependent uponthe strength properties of the studbolts and the pressure rating of thetank C* = shielding strip    B = BM 702 flangeS* = strap retainer     F = tank flangePositioning on the tankD >1/7×H, but max. 1/3×D HRecommended distance  Do not position in    Do not position from the tank wall  tank centerline!   above internals! (multiple reflections!)    (interference reflections!)A Stilling well or Wave-Guide may be mounted in any position on the tank!
7 Installation and operating instructions BM 702  (07/00)When using the PTFE Wave-Stick in hazardous areas of Zone 0, any electrostatic charging ofthe stick, e.g. by flow of product, must be avoided!3 Electrical connectionTo open the signal converter, please use a screwdriver and release the four visible screwson top of the blue housing.Terminal assignmentBM 702:The polarity of the 4-20 mA connectionis arbitrary. FE 124-20mAcurrent-loopcable glandEquipotential bondingWhen used in hazardous areas, the BM 702 Ex  can be incorporated in the PAequipotential bonding system, e.g. by using the separate U-clamp terminal at the “neck“of the BM 702 Ex.Rated temperature of connecting cables: see Section 6.Supply voltage at the terminals (1,2)The 4-20 mA supply must be able to provide the following voltage U at the terminals of theBM 702 – dependent on the current I. Please consider also the line resistance and possibleloads on the secondary side of the supply unit.4mA12mA8mA16mA20mA3.6mA 22mA IU13V14V15V16V17VThe allowed upper limit R for load+line resistance is depending on the  specification of thesupply unit:U @20mA (supply unit) 14 V 15 V 16 V 17 V 18 VMax. resistance R 50 Ω100 Ω150 Ω200 Ω250 Ω
8 Installation and operating instructions BM 702  (07/00)BM7029.500Füll. mm_____4 43214 Setting the parametersSetting parameters via program PC-CATWith the program PC-CAT, version 3.01 or higher, you can configurate BM 702 instrumentsin a very comfortable way from a PC. Connect the non-intrinsically safe side of the isolationamplifier over a load between 120 Ω and 350 Ω to the Smart adapter (delivered togetherwith PC-CAT) and connect it with a serial port of the PC.The used isolation amplifier must be HART® compatible.Local display (optional)(1) Numeric display, measured values(2) Alphanumeric display, function/unit(3) 6 Markers to display measurementstatus(4) 4 keys for configuration and errorinterrogation Adapter ≥ 120 Ω  RS232 isolation amplifier
9 Installation and operating instructions BM 702  (07/00)Function of keys  (only together with local display)Operator control can be carried out with the aid of local display unit after opening thehousing. However, a particularly convenient form of parameter setting is offered by the PCprogram PC-CAT (special accessories, see above).→ (cursor key) - selects the configuration menu,- branches the menu to the next lower level,- shifts the cursor* to the next column on the right.↑ resp.  ↓ (select key)  - branches the menu to the next digit on the same  level,- changes the content (digit, text character) at the  cursor* position.↵ (ENTER key) - branches the menu to the next higher level,- stores newly entered parameters,- executes displayed functions,- selects special functions (e.g. error memory,  see Sect. 5).* The cursor position is signalled by flashing of the character at the appropriate place.Meaning of status markers  (only for version with local display)The 6 markers ? x below the local display only show information about the status ofmeasurement and are no error displays!?1: No current measured value: The device is searching for a new value. If thesearch for a plausible level fails for a certain time, "SIGNAL DOWN" appears aserror display.? 2: Signal too strong: Mean of reflected microwaves is very high. Gain is automa-tically stepped down.? 3: Poor spectrum: Brief showing of this marker has no significance. If permanentlyon, this may result in uncertain (incorrect) measured values or the error message"NO M.VALUE".? 4: No measured value as yet: Evaluable measured values not available after thedevice has been started up. Measured value automatically set to the level of thetank bottom. This marker disappears when the first valid measured value isobtained.? 5: Tank bottom: In tanks with dished bottom, for example, the measuring signal can"disappear" if measurements are carried out near the bottom. The measured valueis then automatically set to the level of the tank bottom.? 6: Measurement frozen: Device is in the block distance detection (see below).
10 Installation and operating instructions BM 702  (07/00)Simply scaling the current output1) Drain the tank completely to the 0% marking (= 4 mA) 1).2) Press the lower keys (↵ und ↓) down, until theasterisks on the display „TANKHEIGHT|********“ arereplaced by the actual measured distance value 2).3) Then release and press ↵. In the lower line: „SURENO?“ is displayed.4) If this value is not plausible or the tank is not empty,abort by ↵. Or accept the value by pressing ↑ (“SUREYES?”) and then ↵.5) Now the tank height is set.6) In the next step you can also enter this value as 4 mAscaling (0%). Press ↵. In the lower line now: „SURE NO?“is displayed again.7) If this value shall not be stored, abort by ↵. Or acceptthis 4mA scaling by pressing ↑ (“SURE YES?”) and then ↵.8) Fill the tank to the 100% mark. Use the same procedurefor the 100% point = 20 mA only now by pressing the topkeys → and ↑  1) 2).9) First the measured distance can be taken as blockdistance. After this you can enter or adjust the 20 mA point(100%) according to the actual level.1) This example was written for the case: current output = level (default). For distance measurement thepoints 0% (short distance = high level) and 100% (large distance = low level) are exchanged2) If no reliable measurement is possible „NO ACCESS“ is displayed. Abort by pressing ↵0%TANKHEIGHT  1234 mm↵TANKHEIGHT  1234 mmSURE YES? 1.2.100%BLOCKDIST.  567 mm↵TANKHEIGHT  1234 mmSURE NO?SCALE 4mA  0 mmSURE NO?SCALE 4MA  0 mmSURE YES? 1.2.SCALE 4mA  0 mm↵
11 Installation and operating instructions BM 702  (07/00)Description of functionsThe table on the following 3 pages provides an overview of all parameters that can be set inthe configuration menu.This is followed by more precise explanations of some functions and a typical configuration.Configuration menu  (version 7.00)Function (Fct.) Input range Description1.0 OPERATION1.1 DISPLAY1.1.1 FCT.DISP identical with 3.2.11.1.2 UNIT.LENGTH identical with 3.2.21.1.3 UNIT.CONV. identical with 3.2.32.0 TEST2.1 HARDWARE2.1.1 MASTER Master hardware test.2.1.2 DISPLAY Display hardware test.2.1.3 STATUS Status information for Service2.2 CUR.OUTP.I2.2.1 VALUE I Value display Display of actual value of thecurrent output.2.2.2 TEST I Select 3.6 mA/4 mA/6 mA/...... 20 mA/22 mA Output of selected value tothe current output. Withsafety query.2.4 FIRMWARE2.4.1 MASTER Display Display of master firmwareversion.3.0 INSTALL.3.1 BASIS.PARAM3.1.1 TANKHEIGHT Select unit             m/cm/mm/inch/FtEnter 0.50 ... 20.00 [m]Enter tank height (seeexplanatory notes).The unit entered here is alsoused for all other lengthentries.3.1.2 BLOCKDIST Enter 0.10 [m] ... tank height Enter block distance = non-measurable range belowbottom edge of flange (seeexplanatory notes).3.1.3 ANTENNA Select                     STANDARDWAVE-STICK Select antenna type. WAVE-STICK for all Wave-Stickversions, except type "SW"for stillwells.All other = STANDARD.3.1.4 ANT.EXTENS. Enter     0.00 [m] ... tank height Enter length of antennaextension (not for Wave-Stick: set to= 0)3.1.5 DIST.PIECE Enter               0 ... 2000 [mm] Enter length of distancepiece above flange (hightemp. version = 120 mm).3.1.6 STILLWELL Select                       NO / YESIf “YES“: enter  25 ... 200 [mm] Selection: without or withstill well.With still well: enter insidediameter in [mm]
12 Installation and operating instructions BM 702  (07/00)Function (Fct.) Input range Description(compensates differentwave speeds in still wells)3.1.7 REF.OFFSET Enter    -10.00...0...+10.00 [m] Reference offset is addedto measured distancevalues.3.1.8 TB.OFFSET Enter-100.00...0...+100.00 [m] Tank bottom offset is addedto measured level values.3.2 DISPLAY3.2.1 FCT.DISP Select                            LEVELDISTANCECONVERSIONSelect function of display(value to be displayed).See also explanatory notes.3.2.2 UNIT.LENGTH Select                    m/cm/mm/inch/Ft/PERCENT/BARGRAPHSelect unit for length valueto be displayed (only forlevel and distance).3.2.3 UNIT.CONV. Select        m3/l(Liter)/US Gal/GB Gal/Ft3/bbl/PERCENT/BARGRAPH/USER UNITSelect unit for conversionvalue to be displayed(“volume table“).(see explanatory notes)3.2.4 USER UNIT Text entry 10 characters Enter user-defined unit forthe conversion table.3.2.5 ERROR MSG. Select                          NO/YES Select whether errormessages to be shown indisplay.3.3 SIGNAL OUT3.3.1 FUNCTION I Select   OFF/LEVEL/DISTANCE/CONVERSION/SW.OUTP. Select function of thecurrent output.3.3.2 RANGE I Select                          4-20mA4-20mA/E3.64-20mA/E22Select range/error statusfor the current output (holdlast value or 3.6 mA/22mAin error status)3.3.3 SCALE 4mA Enter  -200.00 ... +200.00 [m]0.00 ... 99999.99 [m3]Enter lower measuringrange value for the currentoutput (4 mA).(see explanatory notes)3.3.4 SCALE 20mA Enter   -200.00 ... +200.00 [m]0.00 ... 99999.99 [m3]Enter full-scale range valuefor the current output (20mA).(see explanatory notes)3.3.5 BAUDRATE Select                        1200 Bd Baud rate for HART®communication (do notchange!).3.3.6 ADDRESS Enter                          0 ... 255 Enter device address.(for HART® multidrop)3.3.7 PROTOCOL Select HART/KROHNE-PC Select communicationsprotocol3.4 USER DATA3.4.1 LANGUAGE Select     GB-USA/D/F/I/E/P/S Select language for theoptional display.3.4.2 ENTRY CODE 1 Select                         NO/YES Switch the access lockouton/off.
13 Installation and operating instructions BM 702  (07/00)Function (Fct.) Input range DescriptionIf YES, for every access a 9-digit entry code on the 4keys is necessary.3.4.3 CODE 1 Enter code         (RRREEEUUU)Enter the entry code foraccess lockout.3.4.4 LOCATION Enter text (8 characters) Enter a device identifier.3.5 APPLICAT.3.5.1 AUTO TANKH. Special function Automatic determination oftank height(see explanatory notes).3.5.2 EMPTY.SPEC. Select                        OFF/ON/RECORD Recording the profile of theempty tank (empty-tankspectrum) (see explanatorynotes).3.5.3 TIMECONST. Value               1...10...100 [s] Enter time constant formeasured-value filtering3.5.4 TRACING.VEL. Value0.01...0.50...10.00 [m/Min] Enter the maximum rate ofchange in level that canoccur in operation.3.5.5 MULT.REFL. Select                          NO/YES Switch the multi-reflectionidentifier on/off.3.5.6 BD-DETECT. Select                          NO/YES Switch the block distance(overfill) identifier on/off(see explanatory notes).3.5.7 FUNCT. FTB Select                              OFF/PARTIAL Select function of tankbottom tracing system (seeexplanatory notes).3.5.8 EPSILON R Enter 1.1000 ... 8.0000 Enter relative permittivity ofproduct (only for Fct. 3.5.7)3.5.9 TANKTYPE Select                  STORAGE T./PROC TANK Select tank type.STORAGE T. = smoothproduct surfacePROC TANK = slightlydisturbed product surfaceThe default settings are marked in the table bold.
14 Installation and operating instructions BM 702  (07/00)Explanatory notesTank heightThe tank height (Fct. 3.1.1) for the BM 702 is defined as the distance between the topedge of the tank connecting flange and the bottom reference point. The bottom referencepoint is that “point“ in the tank on which the microwaves of the BM 702 hit and from whichthey are reflected. This may be the tank bottom (symmetrical tank with flat bottom) or thenon-horizontal part of the bottom (e.g. tank with dished bottom) or an additionally fittedplate. The BM 702 cannot measure below this point (“sump“ in the tank).Note: When the tank is completely empty and the tank bottom provides good reflections(flat, not dished bottom!), the tank height can also be automatically determined with theaid of Function  Fct. 3.5.1 AUTO TANKH. Before confirming, check carefully that theproposed tank height is plausible!Block distanceThe “block distance“ function (Fct. 3.1.2) defines a zone below the top reference point inwhich measurements are not meant to take place. The value should be at least 10 - 20 cmgreater than the length of antenna+antenna extension, or at least 20 cm in the case of theWave-Stick.Signals within the block distance are suppressed; a rise in the tank filling above this limit(response threshold) will lead to a measuring result corresponding to a distance = blockdistance, when Fct. 3.5.6 BD-DETECT. is switched on.Scaling of the current outputThe scaling of the current output (Fct. 3.3.3: level 1 = 4 mA ; Fct. 3.3.4: level 2 = 20 mA)should if possible lie within the measuring range (between bottom reference point andresponse threshold).By pressing the two upper keys (→ and ↑) or the two lower keys (↵ and ↓) at the sametime, the 0% setting (= 4 mA) or 100% setting (= 20 mA) can be programmed according tothe actual level (see page 9).
15 Installation and operating instructions BM 702  (07/00)  ++++++++++++++++++++++++++++++++Sumpnonmeasurablezonetank height (Fct. 3.1.1)Fct. 3.1.4upper reference point(top edge of tank connecting flange)block distance (Fct. 3.1.2)responsecurrent output20mAmax(Fct. 3.3.4)4min(Fct. 3.3.3)lower reference point(tank bottom / datum point)Fct. 3.1.5thresholdmeasuringmA[e.g.: 5.30 m][e.g.: 0][e.g.: 0][e.g.: 0.6 m][e.g.: 0.4 m][e.g.: 4.0 m]rangeEmpty-tank spectrumTo enable the BM 702 to identify and blank out interference signals, e.g. caused by fixedand moving tank internals, the tank profile (empty-tank spectrum) needs to be recordedonce only prior to (initial) start-up. For recording, the tank should be completely empty andall moving parts (e.g. agitators) switched on. If major interference through internals is notexpected, recording of the empty-tank spectrum can also be dispensed with, since thefactory has already carried out and stored a partial empty spectrum of the flange system.Empty-tank spectrum recording via displayAfter selecting menu item Fct. 3.5.2, press key →. The display then shows whether theempty spectrum is currently ON or OFF. Then press the ↵ key if no change is to be made, oruse the ↑ key to choose between the following options:• ON: the empty-tank spectrum is (again) switched on and taken into account formeasurements.• OFF: the empty-tank spectrum is not taken into account for measurements, butremains stored in the BM 702 and can be switched on again at a later date.• RECORD: the existing empty-tank spectrum is to be deleted and a new onerecorded.
16 Installation and operating instructions BM 702  (07/00)After selecting "RECORD": if other parameters had previously been changed, the query"ACCEPT YES" is first made as to whether they are to be stored. In this case, confirm bypressing ↵. To record, use the ↑ key to select one of the following options:• MAX. VALUES: (only maximum values are taken into account when the empty-tankspectrum is recorded; useful e.g. with “difficult“ agitators).• AVERAGE: (values are averaged; this setting can be used for most applications).After selecting with the ↑ key, press the ↵ key to select TOTAL or the ↑ key to selectPARTIAL.• When TOTAL is selected, the empty-tank spectrum is recorded over the entire range(tank height).• If the tank has not been fully drained, the empty-tank spectrum can also berecorded up to a certain distance, in which case the menu item PARTIAL should beselected. When this has been selected, a query takes place by way of the ↵ keyconcerning the distance value up to which the empty-tank spectrum is to berecorded. The tank area below the current filling level is then excluded from theempty-tank recording. It is recommended to maintain a safety distance of 20 to 30cm from the actual product distance.Subsequently press key ↵ to start recording the empty-tank spectrum. The display startswith “200“ and counts down to “0“. The sign WAIT... is shown in the display.  READYappears after approx. 1-3 minutes. Then press key ↵ five times to store the recordedempty-tank spectrum, which is taken into account for measurements.Empty-tank spectrum recording via PC-CATConnect the BM 702 and press in the display mode of PC-CAT the key combination Ctrl-L.The type of empty-tank spectrum can be selected by one of the following keys:1: Max.Values 4: Max. Partial A: Break2: Average 5: Avg. PartialTank bottom tracing mode (FTB)The BM 702 includes an additional function for measuring reliably low levels in tanks withflat bottom and poorly reflecting products (low dielectric constant). This tank bottom tracingsystem (abbreviated FTB) is activated in the vicinity of the tank bottom (max. 20% level).Given higher levels, the normal measuring method is used (reflection from the productsurface).If the measurement jumps to the correct level only after filling above a certain level (approx.0.3-1.0 m), you can activate the FTB function Fct. 3.5.7 „PARTIAL“. The relative permittivityεr of the tank product must be set in Fct. 3.5.8. If it is not known, enter the figure of 2.0.Since the exact position of the tank bottom must be known for this process, it is advisablewhen using the FTB to determine the tank height automatically with an empty tank, usingFct. 3.5.1.Conversion table/Volume tableA table consisting of a maximum of 50 points can be stored in the BM 702 for non-linear orlinear conversion of the level, e.g. into a volumetric value. This table, however, can only beprogrammed with the PC-CAT program (Fct. 3.7.2).
17 Installation and operating instructions BM 702  (07/00)Sequence for setting parameters (example)  (for version with local display)The following description refers to a storage tank with the parameter examples taken fromthe illustration in this Section. If the device no longer contains the default parameters, thekeystroke combination for entering the numerical values may differ.Activity Keys to beactuatedContent of BM 702display after activityEntry into configuration menu →Fct.  1.0OPERATIONSetting the parameter: tank height ↑ ↑ → → Fct. 3.1.1TANKHEIGHTDisplay of default value →10.000  mInput of tank height "5.30 m" →↓ → 5x↑ → 3x↑05.300 mConfirm tank height and move to blockdistance↵ ↑ Fct. 3.1.2BLOCKDISTDisplay default value →0.5000  mEnter block distance "0.60 m" → ↑ 0.6000  mConfirm block distance and move to currentoutput configuration↵ ↵  ↑ ↑ Fct. 3.3SIGNAL OUTMove to lower range value → ↑ ↑ Fct. 3.3.3SCALE 4 mADisplay default value →+ 00.000  mEnter lower range value (0.4 m = 4 mA) 3x → 4x↑ + 00.400  mConfirm lower range value and move to full-scale range value↵  ↑ Fct. 3.3.4SCALE 20mADisplay of default value →010.00 mEnter full-scale value (4.0 m = 20 mA) 2x→ ↓ → 4x↑004.00 mConfirm full-scale value and move to emptytank spectrum↵ ↵ ↑ ↑ → ↑ Fct. 3.5.2EMPTY.SPEC.Select: re-record empty spectrum →  ↑ ↑ RECORDStore changed parameters ↵ACCEPT. YESConfirm and select: averaging ↵  ↑ AVERAGEConfirm and start recording; then wait forapprox. 1-3 minutes!↵ ↵ READYConfirm and move to tank type ↵ 7x↑Fct. 3.5.9TANK TYPEDisplay of default value →PROC TANKSelect tank type "storage tank" ↑ ↑ STORAGE T.Return to measurement function withconfirmation of changed parameters 5x↵PARAM.CHECK,then START,then meas.val. display
18 Installation and operating instructions BM 702  (07/00)5 Maintenance, error handlingReplacement of the signal converterBefore commencing, note the parameters of the BM 702 and switch off the power supply!1. Disconnect all cables from the terminals in the terminal compartment.2. Remove the 4 Allen screws M (Allen key size 5 mm) and lift off the signal converter.The flange unit (incl. waveguide window) will remain tight even with pressurized tanks.CautionOn pressurized tanks, do not on any account remove the 4 screws H  connecting thewaveguide window to the BM 702 flange!  DANGER!3. Fit the new BM 702 converter.4. Reconnect all cables in the terminalcompartment, as described in Section3.5. Check against the enclosed report onsettings whether the factory-setparameters are correct for yourapplication. If not, reset.6. Record the empty spectrum,see Section 4.Important: Make sure that the screw threadof the covers on the terminal and electroniccompartments is well greased at all times.distance piece(for hightemperatureversion up to 250°C (482°F)O-ringBM70connecting flangesignal converterMHReturning a BM 702The party returning a device is obligated to check and ensure that all cavities in the deviceare free from dangerous substances (toxic, caustic, flammable, water-endangering), andthat a certificate is enclosed with the device confirming that it is safe to handle.Error display during measurement  (only for versions with local display)When function 3.2.5 "ERROR. MSG." is set to YES, any error occurring during measurementis indicated in the display and alternates with the measured value for as long as the error ispresent.In addition, all  errors are stored. Press the keystroke combination ↵ ↑ → → to get intothe error list.  You can page through the list with key → , and acknowledge the errors at theend - if required - by "QUIT YES". Press key ↵ twice to return to the measuring mode.Fatal errors (FATAL ERROR), that are detected when the device is started up, renderoperation of the BM 702 impossible.
19 Installation and operating instructions BM 702  (07/00)6 Safety informationiHazardous-duty systems• Types of protection in the BM 702 terminal compartment:Intrinsically safe"ia"• Consult the relevant wiring and installation regulations, e.g. VDE 0165, beforemounting, dismantling or making electrical connections in a hazardous areaTemperature rating of connecting cables:The temperature rating of connecting cables is dependent on the maximum temperature ofthe flange:Version Max. flangetemperature Cable temperatureratingWithout high temperature ≤ 100°C (212°F) 70°C (158°F)distance piece > 100°C (212°F) 80°C (176°F)With high temperature ≤ 200°C (212°F) 70°C (158°F)idistance piece > 200°C (212°F) 80°C (176°F)
20 Installation and operating instructions BM 702  (07/00)7 Technical data (extract)Tank height (measuring range) 0.5 to 20 m / 1.6 to 65.6 ftMeasuring accuracy (distance) from 1m/3ft: + 1cm/0.4” ; from 5m/16ft: + 0.2%Measured-value resolution 1 mm / 0.04”Rate of change in level max. 10 m/min / 32.8 ft/min (tracking speed)Connecting flangesHorn antenna/Wave-Guide DIN 2501 DN 50 to DN 200 / PN 6 to PN 64 andhigher;Shape C to DIN 2526 or othersANSI B16.5  2” to 8",Class 150 lb or 300 lb, RFWave-Stick DN 50...150 or ANSI 2”...6”, dairy DIN 11851DN 50/65/80, Tri-Clamp 2/3/4”,SMS 51/63/76 mm, G 1½"Max. allowable operating pressure  -1 bar (vacuum) to max. 64 bar / 928 psig,depending on version and flange pressure rating.(see name plate)LP flange system with horn antenna, Wave-Guide or Wave-Stick without flange plate-1 bar (vacuum) to +2 bar /29 psigV96 flange system with horn antenna or Wave-Guide:Connection:nominal dia. Flange rated pressurePN 16 PN 25 PN 40 PN 64DN inches bar psig bar psig bar psig bar psig80 3 16 232 --- --- 40 580 64 928100 4 16 232 --- --- 38 551 55 797150 6 16 232 --- --- 34 493 47 681200 8 16 232 25 362 32 464 45 652Wave-Stick: max. 16 bar / 232 psig, temperature-dependent:-20 +150+100-1+1+16 46 - 0.3·T[°C] bartemperature Tpressure+232[psig] [bar]+14-14+212+302°F745 - 2.42·T[°F] psig
21 Installation and operating instructions BM 702  (07/00)Operating temperature at flange LP flange system: -20°C (-4°F) to +130°C (302°F)(see also chapter 8) V96 flange system:Basic version: -30°C (-22°F) to +130°C (266°F)Special version: min. -60°C (-76°F)High temperature version, FFKM:max. +250°C (482°F)Kalrez 2035: max. +210°C (410°F)FPM (Viton) or FEP-coated: max. +200°C (392°F)PTFE-Wave-Stick: -20°C (-4°F) to +150°C (302°F),  pressure dependentPP-Wave-Stick: -20°C (-4°F)to +100°C (212°F)Product temperature Unrestricted, provided ambient temperature and flangetemperature are within the specified limitsAmbient temperature Signal converter (Tamb): -40°C (-4°F) to +55°C (131°F)MicrowavesMeasuring principle FMCW RadarFrequency range X-Band 8.5 - 9.9 GHzAntenna radiation angle Type 3:  ± 8° Type 4:  ± 6° Wave-Stick:  ± 9°Ex-i current output HART® (passive)Current 4 - 20 mA; without or with error message 3.6 mAor 22 mAAccuracy and linearity 0.15 %; TC=100 ppm/Kclamp voltage > 17V (I = 4 mA); >  13V (I = 20 mA)Digital communication HART®Ambient conditionsEnvironment class Locations exposed direct to open-air climate,D1 Severity in conformity with EN 60654-1Protection category (converter) IP66 / IP67 (equivalent to NEMA 4 and 4X)Electrical connectionCable entries: 1 x M 20×1.5(delivered with 1 cable gland M 20 mm orQUICKON® 2-pole cutter clamp)Terminals: Cable cross-section 0.5-1.5 mm² (AWG 20-16)U-clamp terminals (for PA and FE) cable cross-section max. 4 mm² (AWG 12)
22 Installation and operating instructions BM 702  (07/00)8 BM 702 Level-Radar Type codeSeries V96 or LP:Series WS:Marking of the signal converter (see name plate):BM 702 non-Ex version for non-hazardous areasBM 702i / EEx Ex version for hazardous areas,terminal compartment in Increased Safety „ia“Marking of the Flange systems (see name plate on flange):..(1).. ....(2)...... non-Ex version for non-hazardous areas..(1).. ....(2)...... – E Ex ..(3).. Ex version for hazardous areas(1) SeriesV96 Flange system V96(with „Metaglass“ as versions with horn antenna or Wave-Guide)WS Wave-Stick(plastics rod antenna or short stick for still wells)EA Enamel antennaLP LP version(with horn antenna or Wave-Guide)(2) Materials of the parts in contact with the product- Series V96:» Antennas and flanges:SS Flange and antenna of stainless steelused material: see marking on flangeHB Flange plating and antenna of Hastelloy B (e.g. B2)used material: see marking on platingHC Flange plating and antenna of Hastelloy C (e.g. C4 or C22)used material: see marking on platingTi Flange plating and antenna of TitaniumTa Flange plating and antenna of TantalumMo Flange plating and antenna of Monel» gasket material:xxxxxxName plateFlange systemFlange materialMaterial "Metaglass" ringHigh temperature distance piece(optional)Flange plating(for Hastelloy, Ti, Ta)MarkingMarkingMarkingFlange plating(for Hastelloy)Terminal cover(not for LP version)xxxName plateFlange systemFlange materialoptional: flange plate(Vers. LPTFE/PTFE)optional: antenna(LP horn antenna)Stick(LPTFE/PTFE/PP)MarkingTerminal cover
23 Installation and operating instructions BM 702  (07/00)FFKM Gaskets of FFKM, e.g. Kalrez™ 4079 or Parofluor™ V8545-75K2035 Gaskets of Kalrez™ 2035K1091 Gaskets of Kalrez™ 1091FPM Gaskets of FPM, e.g. Viton™FEP Gaskets FEP-coated (FPM core)- Series WSLPTFE Stick and flange plate of conductive PTFEPTFE Stick and flange plate of PTFESS PTFE stainless steel PTFE, gasket of FFKMalso for version „LP horn antenna“SS PP stainless steel PP, gasket of FPM (Viton™)- Series EAEM PTFE Antenna of enamel, sealing of PTFE(3) Application conditions, equipment group II(explosive atmosphere by gases, vapours, mists)1G equipment category 1, application in Zone 0(versions V96, EA, or Wave-Stick LPTFE or PTFE with Metaglass)2G equipment category 2, application in Zone 1(Wave-Stick PP or PTFE without Metaglass, or LP flange system)(free) Without Ex approval (e.g. LP version)Limits of temperature at flange:Version Minimum flange temperature Maximum flange temperature(1)+(2) of thetype code Standardversion Special versionwith marking„2.4610“ at theMetaglass ringWithout hightemperaturedistance pieceWith hightemperaturedistance pieceV96 ... FFKM -30°C (-22°F) -60°C (-76°F) +130°C (+266°F) +250°C (+482°F)V96 ... K2035 -30°C (-22°F) -60°C (-76°F) +130°C (+266°F) +210°C (+410°F)V96 ... FPM -30°C (-22°F) -60°C (-76°F) +130°C (+266°F) +200°C (+392°F)V96 ... FEP -30°C (-22°F) -60°C (-76°F) +130°C (+266°F) +200°C (+392°F)WS LPTFE -40°C (-40°F) ––– +130°C (+266°F) +150°C (+302°F)WS PTFE -40°C (-40°F) ––– +130°C (+266°F) +150°C (+302°F)WS SS PTFE -20°C (-4°F) ––– +130°C (+266°F) +150°C (+302°F)WS SS PP -20°C (-4°F) ––– +100°C (+212°F) +100°C (+212°F)iLP -20°C (-4°F) ––– +130°C (+266°F) –––
24 Installation and operating instructions BM 702  (07/00)9 Parameter check list BM 702 ..................................Vers.:......................device no..................................Menu modified at.......................................:.................:.................:.................:Fct. Configuration parameters (extract)3.1.1 Tank height.......................................:.................:.................:.................:3.1.2 Block distance..................................:.................:.................:.................:3.1.3 Antenna............................................:.................:.................:.................:3.1.4 Antenna extension.............................:.................:.................:.................:3.1.5 Distance piece..................................:.................:.................:.................:3.1.6 Stillwell / diameter............................:.................:.................:.................:3.1.7 Reference offset................................:.................:.................:.................:3.1.8 Tank bottom......................................:.................:.................:.................:3.3.1 Current output, function offset............:.................:.................:.................:3.3.2 Current output range/error.................:.................:.................:.................:3.3.3 Min. current scale..............................:.................:.................:.................:3.5.2 Empty spectrum................................:.................:.................:.................:3.5.3 Time constant...................................:.................:.................:.................:3.5.4 Tracking speed..................................:.................:.................:.................:3.5.5 Multiple reflections (yes/no)..............:.................:.................:.................:3.5.6 Block distance ident (yes/no)............:.................:.................:.................:3.5.7 Function FTB.....................................:.................:.................:.................:3.5.8 Epsilon R..........................................:.................:.................:.................:3.5.9 Tank type..........................................:.................:.................:.................:

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