Measuring Gas Velocity with the D-FL 100 Differential Pressure Bar

11/07Measuring Gas Velocitywith the D-FL 100Differential Pressure BarGmbHKollaustraße 105 · 22453 Hamburg ·Tel. +49 / 40 / 55 42 18-0 · Fax +49 / 40 / 58 41 54

Document:man_dfl100_uk.docVersion: 20.10.2007Last update: 07.12.2007Print date: 07.12.2007This documentationis valid from:Software-VersionD−FL 1.6 upwardsDURAG GmbHKollaustraße 10522453 HamburgTelephone: +49 (40) 55 42 18 – 0Fax : +49 (40) 58 41 54Email: info@durag.deInternet: www.durag.deThis documentation (approx. 53 pages) has been compiled with the greatest care. However, all liabilitymust be excluded.The contents of this document can be changed without notice.The documentation of DURAG GmbH refers toa.) the complete equipment in principle, even if individual program modules or parts have not beenpurchasedb.) the current status of the equipment design at the time of updating this documentation (seeabove).© DURAG GmbH 2007Editorial department: Herbert Lange. All rights reserved.This document or parts of it may not be duplicated or communicated without the express consent ofDURAG GmbH, irrespective of by which method or means, electronic or mechanical, this occurs.GmbH

D-FL 100Table of Contents1. Application ...........................................................................................................................12. Functional Description........................................................................................................13. System Components of the D-FL 100................................................................................63.1. Differential Pressure Bar...........................................................................................................73.2. Differential Pressure Transducer..............................................................................................83.3. D-FL 100-10 Display.................................................................................................................94. Installation ..........................................................................................................................114.1. Choosing the Measuring Point................................................................................................114.2. Installing the Differential Pressure Bar ...................................................................................114.3. Electrical Connections ............................................................................................................144.4. Purge Air Connection ................................................................................................................195. Start-Up / Error Messages.................................................................................................205.1. Start-up of the Transducer......................................................................................................205.2. Start-up of the D-FL 100-10 Display.......................................................................................215.2. Error Messages on the D-FL 100-10 Display .........................................................................236. Recording of Measured Data............................................................................................237. Maintenance .......................................................................................................................248. Specifications of the D-FL 100 .........................................................................................259. Selecting the System Components..................................................................................299.1. Selecting the differential pressure transmitter ........................................................................299.2. Selecting a differential pressure bar .......................................................................................309.3. Selecting the differential pressure bar material ......................................................................319.4. Selecting the Type of Installation............................................................................................319.5. Ordering Information / Technical Overview ............................................................................329.6. Darstellung der Gerätevarianten.............................................................................................3510. Calculation sheet D-FL 100...............................................................................................3810.1. Explanation of the calculation sheet D-FL 100 .......................................................................4011. Measuring Point Questionnaire........................................................................................43DURAG GROUP company addresses ................................................................................................48GmbH

D-FL 100IllustrationsFig. 1: Diagram of a Pitot tube .......................................................................................................2Fig. 2: Diagram of a differential pressure bar inside a stack......................................................3Fig. 3: Dividing the duct/stack cross section into equal ring surfaces .....................................4Fig. 4: Possible settings of the switching valve...........................................................................5Fig. 5: Overview of the system components ................................................................................6Fig. 6: Cross section of the differential pressure bar..................................................................7Fig. 7: Diagram of a differential pressure transducer..................................................................8Fig. 8: Front cover of D-FL 100-10 Display .................................................................................10Fig. 9: Installation positions of the differential pressure bar ...................................................12Fig. 10: Installation of the differential pressure bar I (Dimensions in mm)...............................12Fig. 11: Installation of the differential pressure bar II (Dimensions in mm)..............................13Fig. 12: Connection of the pressure pipes ...................................................................................13Fig. 13: Electrical connection of the transducer ..........................................................................14Fig. 14: Connection diagram of socket rack 1 (19-inch rack mount system) ...........................15Fig. 15: Connection diagram of socket rack 2 (19-inch rack mount system) ...........................16Fig. 16: Dimensions of D-FL 100-10 (19-inch rack mount system) ............................................17Fig. 17: Connection diagram of terminal strip (housing model) ................................................18Fig. 18: Dimensions of D-FL 100-G (fieldhousing for 19-inch rack)...........................................19Fig. 19: Turning knob ......................................................................................................................21Fig. 20: Probe cross sections ........................................................................................................27Fig. 21: Drawings of the mounting flanges...................................................................................28Fig. 22: Overview of parts...............................................................................................................32Abb. 23: Gerätevarianten, Darstellung außerhalb Kamin .............................................................35Abb. 24: Gerätevarianten, Darstellung im Kamin ..........................................................................36Abb. 25: Anschlussplatte, für Differenzdruck-Messumformer.....................................................37GmbH

D−FL 100 Seite 11. ApplicationOne of the most popular and reliable methods of measuring the differential pressure in a duct or stack isby means of a mechanical device such as a venturi or a differential pressure bar.The differential pressure bar is useful in measuring the velocity of exhaust gases that are not saturatedwith steam or water vapors. These gases may be generated by burning fossil fuels; e.g., in currentplants, waste incinerators and cement kilns. The differential pressure bar is designed to measurebetween 0 and 2,000,000 m 3 /h, depending on velocity and on the inner diameter of the duct/stack. Theminumum velocity should be more than 3 m/s.The DURAG D-FL 100 Velocity Measuring System has been suitability tested by TÜV Nord, Test ReportNo 128CU11650 dated 29. March 1996.2. Functional DescriptionThere are several advantages to using a differential pressure bar instead of a venturi to measure thevelocity of a gas. A venturi reduces the pressure, thus causing pressure loss, whereas a differentialpressure bar has only a marginal influence on the gas flow. Because a differential pressure bar hasminimal effect on the gas flow, it can be used in shorter ducts/stacks, where installation of a venturiwould not be as cost-effective. Finally, a differential pressure bar requires less blower force for equalgas velocity, making it less expensive in overall operating costs.The velocity of a gas in a duct/stack is derived from the difference between the total impact pressureand the reference pressure on the differential pressure bar or Pitot tube (Fig. 1). This relationship isexpressed by Bernoulli’s equation:(Eq. 1)ΔPPgesPstatρvdifferential pressuretotal impact pressure (flow side)static (reference) pressuregas densityvelocityGmbH

D−FL 100 Seite 2Fig. 1:Diagram of a Pitot tubeIn a Pitot tube, the total reference pressure P ges is measured at the tip of the differential pressure bar,and the static pressure P stat is measured via lateral openings. However, the influence of the velocitysquared (v 2 ) component makes obtaining an accurate measurement difficult in the case of gases withvery slight differential pressures and slight pressure variations.The differential pressure is therefore increased by using a reference pressure that is lower than thestatic pressure. A low-pressure area created through a vortex effect behind an object in the path of theflow can be used as a reference. The correction of the dynamic pressure according to Bernoulli (Eq. 2)is achieved with a so-called k -factor. The mathematical relation between the differential pressure andthe gas velocity is therefore as follows:(Eq. 2)VAkmass flowduct/stack cross-sectioncorrection factorWhen correcting volume or mass flow for temperature and absolute pressure, the density of themeasured medium is taken into account. Equation 3 shows how the density depends on the twoparameters of an ideal gas:(Eq.3)ρ n normal density under standard conditionsP n standard pressure = 1,013 * 10 5 PaP operating pressure in PaT n standard temperature = 0 ° CT operating temperature in °CGmbH

D−FL 100 Seite 3The output signal at the D-FL 100-10 Display can be corrected so that the current value of the volume ormass flow is displayed. To do this, the signals (4 - 20 mA) for absolute pressure and temperature mustbe accessible to the D-FL 100-10 Display.The equation between the standard volume flow and the flow is:(Eq. 4)Taking the eqauations 2, 3 and 4 into account, the standard volum flow can be obtained by the followingequation:(Eq. 5)Fig. 2 shows a diagram of a differential pressure bar spanning the entire diameter of a stack. The twochamberdifferential pressure bar senses the impact and static pressures, and transfers them separatelyto the differential pressure transmitter.Fig. 2:Diagram of a differential pressure bar inside a stackAs the gas velocity is not evenly distributed in a duct/stack, an average speed is derived to calculate gaspressure. With completely laminar flow patterns, a single differential pressure measurement wouldsuffice to calculate average gas velocity. This, however, requires very long input and output paths,which are usually not present.The average velocity is measured by means of the differential pressure bar placed across the entirediameter of the duct/stack. The duct/stack is divided into rings of equal areas, and measuring points areGmbH

D−FL 100 Seite 4placed on the differential pressure bar at different distances from the center of the duct/stack.Measurements are taken at all points simultaneously, and therefore the differential pressure is averagedright at the measuring points. The distance between the measuring points is calculated as follows:(Eq. 6)DabD Kindistance from the measuring point to theduct/stack wallduct/stack diameteri-fraction of partial surfacenumber of partial surfacesThe number of ring zones created is dependent on the diameter of the duct/stack. Five ring zones withten measuring points are usually sufficient. (Please consult VDI guidelines DIN 2066, sheet 1 or yourappropriate regulatory agency.)Fig. 3:Dividing the duct/stack cross section into equal ring surfacesGmbH

D−FL 100 Seite 5To prevent residue accumulation on the differential pressure bar, the gas should be clean. Ductscontaining high-particulate gases should be periodically purged with compressed air. By moving thelever in front of the differential pressure bar, each chamber can be purged separately (Fig. 4).Fig. 4:Possible settings of the switching valveCalculating the volume of gas flow also depends on the density of the gas (Eq. 1). To obtain an accuratecalculation, the contents of the gas and their molecular weights must be known (DIN 1952). No gaswatermixtures can be measured, because of condensates.Because it is directly affected by gas density fluctuations, velocity must be measured under operatingconditions. If a calculation for standard conditions is required, the D-FL 100-10 Display will take thestatic pressure and temperature into account. The gas density always depends more on temperaturethan on pressure, so the correction for absolute pressure can be neglected in most cases. Temperatureand pressure can be measured using additional sensors, and the results transferred to the D-FL 100-10Display.GmbH

D−FL 100 Seite 63. System Components of the D-FL 100The D-FL 100 measuring system consists of the following components:• differential pressure bar• differential pressure measuring transducer• D-FL 100-10 DisplayFig. 5:Overview of the system componentsGmbH

D−FL 100 Seite 73.1. Differential Pressure BarThe special shape of the differential pressure bar provides a defined separation point for the gas flowaround its edges. This effects constant conditions for measurement in a large speed range.The separation point of the gas flow normally depends on the shape of the differential pressure bar’sedges and on the speed of the gas. If the position of the separation point of the gas flow on thedifferential pressure bar’s edges changes, a whirl will be created behind the differential pressure bar.The area behind the differential pressure bar thus has different pressure areas due to the differentwhirls. However, a constant flow pattern across the entire speed range on the back of the differentialpressure bar is required for a constant reference pressure. This is ensured by the following profile (Fig.6).Fig. 6:Cross section of the differential pressure barThe differential pressure bar has the shape of a tilted square divided into two chambers by an integrateddivider plate. The tips of the integrated divider plate create the differential pressure bar’s edges. Thedouble chamber system transfers the two pressures (impact pressure and reference pressure) outsideto the differential pressure transducer.The correction factor (c-factor) of the differential pressure bar (see Eq. 2) must be calculated taking intoaccount the geometry of the differential pressure bar and the dimensional relation of the differentialpressure bar to the duct/stack cross section. The c-factor is between 0.5 and 0.7, depending on thediameter of the duct/stack.The application of the differential pressure bar and the gas to be measured will determine what itscomposition should be. The standard differential pressure bar is made of stainless steel (material No.1.4571). Other materials, such as stainless steel alloys, are available for extreme conditions (stainlesssteel alloy material No. 1.4539, Hastelloy C 276 material No. 2.4819, Inconel 602 material o. 2.4816).GmbH

D−FL 100 Seite 83.2. Differential Pressure TransducerThe differential pressure is measured using the differential pressure transducer. Fig. 7 is a diagram of atransducer.The differential pressure is transmitted, via separating membranes and a filling liquid, to a siliciumpressure sensor. If the measuring limits are exceeded, the overload membrane expands until one of theseparating membranes attaches itself to the pressure sensor and thereby protects the silicon sensorfrom overloads.The applied differential pressure expands the measuring membrane laterally. Consequently, the piezoresistors, which are switched in a jumper array and integrated into the measuring membrane, changetheir respective resistive load value. This change in resistor load leads to a jumper output voltage whichis proportional to the differential pressure. This signal is transformed into an output current of 4 to 20mA.Fig. 7:Diagram of a differential pressure transducerThe range of the differential pressure transducer can be adjusted to anywhere from 1 to 20 mbar. Theseparating membranes inside the transducer can be made of either stainless steel (material No. 1.4404)or Hastelloy C276 (material No. 2.4819).The differential pressure transducer comes with an installation bracket and a switching valve mounteddirectly on the transducer. The switching valve permits cleaning of the differential pressure bar withcompressed air, thereby lengthening its maintenance cycle. The zero point check of the differentialpressure transducer can also be performed with the switching valve.The transducer must always be installed above the differential pressure bar. At least the first part of thesupply line from the differential pressure bar should be installed at a slight incline toward the differentialpressure transducer, so that condensation can flow back to the bar in this area.When the ambient temperature is lower than the gas temperature, condensation buildup -- especiallyinside the supply lines to the differential pressure transducer -- will alter the measurement considerably.GmbH

D−FL 100 Seite 9If the differential pressure transducer cannot be installed higher than the measuring differential pressurebar, at least the first part of the supply line should angle upward to the differential pressure transducer,so that the condensation can flow back to the differential pressure bar in this area.The auxiliary current of the differential pressure transducer is 11 to 30 VDC and is supplied by the D-FL100-10 Display (24 VDC). Please consult the operating manual for further details.3.3. D-FL 100-10 DisplayThe D-FL 100-10 Display evaluates the measuring signal from the differential pressure transducer underdifferent application conditions. Gas velocity is usually evaluated under operating conditions. If acomparison of the volume or mass flow to standard values is desired, further gas flow parameters mustbe provided to the D-FL 100-10 Display. Connections for temperature and pressure sensors areavailable for this purpose.A current signal of 4 to 20 mA is available as an output proportional to the volume or mass flow. It canbe connected to additional evaluation devices, such as the emissions D-FL 100-10 Display, recorder ora DAS. The current measured value is shown on a display. Parameters such as inner stack diameter,standard density, c-factor and measuring ranges are programmed on site.The D-FL 100-10 Display consists of a 19-inch rack mount (width 21 TE; height 3 HE) with its owndisplay. If no cabinet is available, the unit can be delivered with a plastic wall housing (24 TE).There are two signals to indicate that the set limit values have been exceeded, and an additional signalfor the status “maintenance/measuring.”Four keys are used to operate the evaluator: MOD, STO, , . The MOD key leads to the setting modeand illuminates the upper yellow indicator light. By pressing the key, the desired function (shown inthe following chart) is selected and the respective LED will be illuminated. The stored values of thecorresponding function are shown on the display. If the value does not need to be changed, press theMOD key once more to exit the setting mode. To change the value, press the STO key. The four-digitdisplay will show a blinking digit.This digit can be increased by pressing the key. Choose the next digit by pressing the key.Pressing the STO key transfers the changed value into non-volatile memory (EEPROM). The LEDinside the STO key will switch off, and the saved value will be displayed. The system automaticallydetermines whether a programmed value is larger than 20 mA. If the value is larger than 20 mA, it willnot be saved; the previous value will once again be displayed. The setting mode can be left by pressingthe MOD key. The LED inside the MOD key switches off.Fig. 8 shows the front cover of the D-FL 100-10 Display.GmbH

D−FL 100 Seite 10LED DisplayStand byIntgL.V.1L.V.2DisplayFunctionunit is in service, zero point testing of differentialpressure transducerintegration time in seconds1st limit value, smaller than L.V.2 in mA (from theoutput current signal)2nd limit value, larger than L.V.1 in mA (from theoutput current signal)shown on display:• volume flow 1000 m3/h• mass flow 1000 kg/h• current output 4-20 mADPHP differential pressure in hPa (mbar)P HP absolut pressure in hPa (mbar), only thethree least significant numbers are displayed,e.g. 1013 hPa is displayed like P013t °C temperature in °CFig. 8:Front cover of D-FL 100-10 DisplayGmbH

D−FL 100 Seite 114. Installation4.1. Choosing the Measuring PointThe technical configurations of boilers and smokestacks vary widely. It is advisable to have themeasuring point determined by the local regulatory agency, which later also calibrates the emissionmonitoring facility.The measuring point for the D-FL 100 inside the duct/stack must have a fairly constant velocitydistribution and should never drop below the dewpoint of the gases.The measuring point should not be located close to a bend or a change of diameter in the duct. Theinput path (distance before the measuring point) and the output path (distance behind the measuringpoint) should be at least 3D (D=inner diameter of duct/stack). If there is not enough space, the inputpath must be longer than the output path. D represents the diameter of a round stack or the hydraulicdiameter of a square or rectangular cross section (Eq. 7).F = areaU = circumference(Eq. 7)If the measuring point lies between a filter and a suction fan, the installation point should be directedtoward the suction fan rather than the filter. Vibrations at the mounting point -- often caused by thesuction fan -- cannot always be avoided. But if, at full load, the vibrations become so strong thatmechanical parts or electrical settings are jeopardized, the installation should be made separate fromthe vibrating suction fan.The measuring point must be safely accessible not only during start-up or calibration, but also for latermaintenance and service.4.2. Installing the Differential Pressure BarFirst attach the installation flange to the duct/stack, then attach the differential pressure bar to theflange. Please observe the following installation guidelines:• Always install the differential pressure bar horizontally with a slight decline so that condensatescannot flow from the differential pressure bar to the pressure transducer (Fig. 9).• Provide sufficient space above the differential pressure bar for the differential pressure transducerand the switching valve. If the differential pressure transducer will not be installed above thedifferential pressure bar, make sure the pipes to the transducer are inclined.• Attach the differential pressure bar to the flange in the direction of the flow or toward the duct/stack,so that the openings at one of the chambers of the differential pressure bar are pointing toward thegas flow. The openings at the other chamber are now located on the side turned away from the flow.Only in this position can a correct differential pressure reading be assured.• Make sure the pressure pipes of the differential pressure bar are connected to the correct side ofthe differential pressure transducer. The flow-side chamber of the differential pressure bar must beconnected to the positive input of the differential pressure transducer, the other chamber with thenegative input. (see also Fig. 12.)GmbH

D−FL 100 Seite 12After the differential pressure bar and the differential pressure transducer have been properly connectedto the electrical system and to each other, the differential pressure bar can be operated.Fig. 9:Installation positions of the differential pressure barFig. 10:Installation of the differential pressure bar I (Dimensions in mm)GmbH

D−FL 100 Seite 13Fig. 11:Installation of the differential pressure bar II (Dimensions in mm)untere SondenkammerLower probe chamberuntere SondenkammerLower probe chamberAdapter fürUmschalthahnAdapter forcross overcockAdapter fürSchlauchanschlussAdapter forhose connectionobere SondenkammerUpper probe chamberobere SondenkammerUpper probe chamberFig. 12:Connection of the pressure pipesGmbH

D−FL 100 Seite 144.3. Electrical ConnectionsIf a 19-inch cabinet is available, the D-FL 100-10 Display can be ordered as a rack mount system.Electricity is connected via two socket racks at the rear of the unit as shown in Figs. 14 and 15.If the D-FL 100-10 Display cannot be installed in a cabinet, it can be ordered with its own housing. Inthis case, the electrical connection is made via a 20-pin terminal strip in the terminal part of the housingas shown in Fig. 17. The electrical connection between the differential pressure transducer and the D-FL 100-10 Display is a cable attached to the transducer. The cables for main current, status signal,recorder output and alarm contact should be installed separately. The connection to the recorder shouldbe shielded.If the D-FL 100-10 is not used, the transducer must be supplied directly with auxiliary current from a UH11...30 VDC unit. The connections are behind the housing cover. (Fig. 13). The output of the transduceris read from the load R. The maximum load is calculated as follows:(Eq. 8)U Haux. energy in VFig. 13:Electrical connection of the transducerCAUTION!With all installations involving D-FL 100-10 differential pressure transducers andD-FL 100-10 Displays, the currently applicable VDE guidelines and any supplementarystipulations of local energy-generating utilities must be observed.GmbH

D−FL 100 Seite 15Fig. 14:Connection diagram of socket rack 1 (19-inch rack mount system)GmbH

D−FL 100 Seite 16Fig. 15:Connection diagram of socket rack 2 (19-inch rack mount system)GmbH

D−FL 100 Seite 17Fig. 16:Dimensions of D-FL 100-10 (19-inch rack mount system)GmbH

D−FL 100 Seite 18Fig. 17:Connection diagram of terminal strip (housing model)GmbH

D−FL 100 Seite 19250 mm13538,5 188,5[B]246230170[B][B]B = 3-Punkt-WandbefestigungsbohrungenØ 5mmG11-01-006120M20 x 1,5M16 x 1,567Fig. 18:Dimensions of D-FL 100-G (fieldhousing for 19-inch rack)4.4. Purge Air ConnectionIn order to clean the differential pressure bar, or to keep it clean, it is recommended to havecompressed air inside the pressure chambers. The compressed air can be used to purge the pressurechambers of the differential pressure bar. The flow of purge air is controlled by the switching valve. Ifthere is no purge air (compressed air: 6-8 bar) at the measuring point, a simple compressed air bottlewill do. Backflow intervals are rarely very short. The frequency of the need for cleaning depends on thedust load in the exhaust stack and on the application. Generally, the differential pressure bar should becleaned at intervals of several weeks or months.If the chambers in the differential pressure bar are so clogged that purge air will not clean them, removethe differential pressure bar and adapter piece and clean the interior of the bar mechanically.GmbH

D−FL 100 Seite 205. Start-Up / Error Messages5.1. Start-up of the TransducerThe differential pressure bar is equipped standard with a differential pressure transducer 2010TD madeby ABB without a display.The transducer will be shipped adjusted (* by Durag. After mounting the transmitter it is only necessaryto do a zero point adjustment.1) turn the switching valve to the position zero point adjustment2) open exhaust screws and wait 30 sec.3) open the key-cover on the top of the transducer4) press down the lock-key „ / M“ with a screwdriver and turn it 90°5) press the „0% / -“ key once6) turn back the lock-key to lock the transducerNow the transducer is adjusted ans should be readout 4mA.If you want to change the measuring range there are three possibilities:• 1) open the key-cover on the top of the transducer2) press down the lock-key „ / M“ with a screwdriver and turn it 90°3) connect a definied pressure for the beginning of the measuring range (normaly 0 mbar) andwait 30s for stabilisation4) press the „0% / -“ Key once5) connect pressure for the end of the measuring range and wait 30s for stabilisation6) press the „100% / +“ Key once7) turn back the lock-key to lock the transducer• It is possible to order a LC-display with two additional keys. With this display you can change veryparameter of the transducer.• The transducers have a HART-interface for programming the parametersNote: you have to change the parameter of your evaluation unit (D-FL100-10) also.(* measuring range see chapter 9.1; damping 5s; transfer function: rootGmbH

D−FL 100 Seite 215.2. Start-up of the D-FL 100-10 Display• After all electrical connections have been made, parameters to calculate volume or mass flow canbe set in the D-FL 100-10 Display. This is done by setting the turning knob.Drehschalterturning knobFig. 19:Turning knobThe turning knob has the following settings:Turning knob settingOperating mode0 measuring mode1 installation mode 12 installation mode 23 installation mode 3In the installation modes the LED are used in combination with the following parameters:LED readout installation mode 1Stand by D Kinner diameter in mmIntg c c-factor (entering digits after the decimal point)L.V.2 ΔP upper value of measuring span of the differential pressuretransducer in Pa (1 mbar = 100 Pa)This value must correspond to the setting on thedifferential pressure transducer. The D-FL 100-10 Displayrecalculates the numerical value of the differential pressurebased on this reference value and the current of thetransducer (e.g., 20 mA = 2000 Pa).L.V.1 m3/h volumetric measuring range in 1000 m 3 /hThis parameter is the reference value of the mA output. 20mA are emitted as soon as this gas flow value is reached.Display ρ gas density at standard operating conditions in kg/Nm³Error T operating temperature in °CGmbH

D−FL 100 Seite 22LED readout installation mode 2Stand by T_0 zeropoint, temperature transmitter in °CIntg T_span span, temperature transmitter in °CL.V.2 P_0 zero point, absolute pressure transmitter in barL.V.1 P_span span, absolute pressure transmitter in barDisplay t_purge cycle time, automatic backflow purging in h9999 backflow disabled0000 DR_release enabled, time release disabledelseError C_mod calculation modeDR_release and time release enabled0000 standard volume flow, temperature constant, absolutepressure constant0001 standard volume flow, calculation with temperature input,absolute pressure constant0002 standard volume flow, calculation with absolute pressureinput, temperature constant0003 standard volume flow, calculation with temperature andabsolute pressure inputLED readout installation mode 3Stand by I_out 20 mA output, adjustmentIntg Code codenumber, unlock input-adjustment, code 8888L.V.2 I_dp input differential pressure transmitter, adjustmentL.V.1 I_Tmp input temperature transmitter, adjustmentDisplay I_P input absolute pressure transmitter, adjustmentErrornot usedThe parametrisation is done in installation mode 1 and 2. The installation mode 3 is only used for theadjustment for the mA inputs and output (alredy done by the manufacturer).GmbH

D−FL 100 Seite 235.3. Error Messages on the D-FL 100-10 DisplayThe D-FL 100-10 Display puts out the following error messages on the display:Displayed error Cause of error SolutionE-01 The absolute pressure transmitterputs out a signal less than 3.8 mA.E-02 The temperature transmitter puts outa signal less than 3.8 mA.E-04 The differential pressure transmitterputs out a signal less than 3.8 mA.E-08 The current entering at the input ofthe differential pressure (absolutepressure or temperature) transmittermeasures more than 20 mA.Check connections and connectingwires. Calibrate transmitter ifnecessary.Check connections and connectingwires. Calibrate transmitter ifnecessary.Check connections and connectingwires. Calibrate transmitter ifnecessary.Check transmitter and calibrateanew if necessary.E-16 Defective RAM Restart unit and replace RAM-IC ifnecessary (DURAG service).E-32 Spill: the gas velocity is too high. Increase gas velocity measuringrange (see Section 5.2: Start-up,turn turning knob at setting 1, valueat L.V.1)E-64 EEPROM transmission error Restart unit and replace EEPROM ifnecessary (DURAG service).FEHLThe turning knob is switched to anillegal position ( > 3)Check the position of the turningknobThe displayed error number is the sum of all actual errors, e.g. E-05 means: E-01 and E-04.During these error messages, a signal of 2 mA of current is read at the output of theD-FL 100-10 Display.6. Recording of Measured DataThe D-FL 100-10 Display puts out the present measured data as an analog electrical signal. Accordingto industry standards, there should be a continuous recording of measured values. The following stripchart recorders are recommended: recorders of 0-20 mA with recording width of at least 100 mm. Thelive zero point of the display is at 20% (4 mA) of the recording scale.The measurements and status signals may, however, also be evaluated by an emission computerdownstream.GmbH

D−FL 100 Seite 247. MaintenanceThe D-FL 100 is a low-maintenance system with long maintenance intervals. The maintenance scheduledepends on the application, and is generally several months (3 months as a rule of thumb). Pressureconditions, climatic and other ambient influences at the measuring site, and the gas being measured allaffect the maintenance schedule.Maintenance work should be performed in the following order:1. Adjust menu item Maintenance at the D-FL 100-10 Display.Use the MOD key on the D-FL 100-10 Display to select Stand by.2. Clean the exterior of the unit.3. Check the differential pressure bar and the differential pressure transducer.Check exterior covers and the connections between differential pre ssure bar and transducer.4. Flush the measuring pipes.The pipes may need to be flushed, depending on application conditions. By changing the setting ofthe switching valve, purge air is directed separately to the different pressure lines (see Fig. 4 forswitching valve settings).5. Clean the differential pressure bar.Under extreme application conditions, when a simple flushing of the pressure lines would not besufficient, the differential pressure bar must be cleaned with a cloth or a brush. The differentialpressure bar must first be disconnected from the transducer and removed from the duct/stack. Themaintenance intervals need to be shorter under such extreme application conditions.6. Make a zero point adjustment of the differential pressure transducer.The two wires on the transducer are cross-wired via the switching valve, and the exhaust screwsare opened briefly and shut again (pressure equalization at transducer).Remove the housing cover from the transducer to monitor the electric current signal on the display.The current output must now be 4.00 mA. If it is not, a zero point adjustment must be made.Remove both screws from the protective cover and remove the cover. Use the M key to proceed topoint 7 and perform the adjustment. Press and simultaneously for about 2 seconds. Thedisplay should now show 4.00 mA; if it does not, repeat the adjustment.7. Switch on the D-FL 100-10 Display.Use the MOD key on the D-FL 100-10 Display to proceed with the measuring process.GmbH

D−FL 100 Seite 258. Specifications of the D-FL 100Measuring principle: Continuous in situ measurement by the differential pressure method.Lengths of the measuring paths:Differential pressure bar I: ...................................... 400 - 2000 mm (15 ¾ in. – 78 ¾ in.)Differential pressure bar II: ..................................... 2000 - 4000mm (78 ¾ in. – 157 ½ in.)Differential pressure bar lll: ..................................... 4000-8000mm (157 ½ in.) – 315 in.)Measuring range: ................................................... 0 - 2.000.000 Nm³/h,Minimum velocity: ................................................... 3 m/sExhaust temperature (standard material):............... min. greater than the dew point................................................................................. max. 400°CDifferential pressure bar material: .......................... 1.4571 (standard),2.4819, 2.4816 according to customer requestMargin of error: ....................................................... +/-2%Electrical specifications of the D-FL 100-10 DisplayVoltage: .................................................................. 115/230 V (±10%)Frequency: .............................................................. 50/60 Hz(Other voltages and frequencies are available upon request.)Limiting valueTwo independently adjustable limiting values: L.V. 1, L.V. 21 x Status "Measure"All relay contacts potential-free,maximal load at cosϕ = 1: ...................................... 230V / 0.5AMaximum admissible ambient temperature range: -20° +50°CIntegration period of the measured value: .............. 1 - 180 sec (freely selectable)Output signal: ......................................................... analog 4 - 20 mAMaximum load: ....................................................... 500 OhmLive zero: ................................................................ 4 mAProtection/weight:rack mount model (IP20): ................................... 2,0 kghousing model (IP65): ....................................... 2,2 kgGmbH

D−FL 100 Seite 26Differential Pressure Transducer265DS (ABB)Adjustable measuring range: .................................. 1 to 10 mbarAuxiliary current: ..................................................... DC 12 - 30 VOutput signal: ......................................................... 4 - 20 mAProtection: ............................................................... IP65Absolute Pressure Transducer265AS (ABB)Adjustable measuring range: .................................. 900 to 1300 mbarAuxiliary current: ..................................................... DC 12 - 45 VOutput signal: ......................................................... 4 - 20 mAProtection: ............................................................... IP65Temperature Measuring UnitSensyTemp WT R (ABB):measuring range: ................................................... 0 to 400°CAuxiliary current: ..................................................... DC 12 - 30 VOutput signal: ......................................................... 4 - 20 mAProtection: ............................................................... IP65GmbH

D−FL 100 Seite 27Fig. 20:Probe cross sectionsGmbH

D−FL 100 Seite 28Installation flange:for D. P. Bar I:.......................................................... flange: C40 x 48.3 mm / DIN 2631pipe: ∅48.3 x 2.6 mm / DIN 2448length: 240 mmfor D. P. Bar II:......................................................... flange: C65 x 76.1 mm / DIN 2631pipe: ∅76.1 x 2.9 mm / DIN 2448length: 240 mmfor D. P. Bar Ill: ........................................................ flange: C100 x 114.3 mm / DIN 2631pipe: ∅114.3 x 3.6 mm / DIN 2448length: 240 mmroter Punktred dotroter Punktred dotroter Punktred dotFig. 21:Drawings of the mounting flangesGmbH

D−FL 100 Seite 299. Selecting the System Components9.1. Selecting the differential pressure transmitterIn order to select the appropriate differential pressure transmitter, the expected pressure range atnormal operating conditions must be estimated. Depending on which flow parameters are known, one ofthe following equations can be applied. The value for the c-factor which corresponds to the interiordiameter can be taken from the subsequent table. A differential pressure transducer with a maximumdifferential pressure of 2000 Pa serves as standard.Known quantity:Required measuring range of the differential pressuretransducer in [Pa]Gas velocity:Volume flow:Mass flow:Symbol Meaning UnitΔP Differential pressure Paρ Density in operating mode kg/m 3v Gas velocity m/sV Volume flow m^3/hcCorrection factorD KInner diameter mmm Mass flow kg/hT Operating temperature °CP Operating pressure Paρ NDensity in calibration mode(0°C und 1,014*10 5 Pa)Luft: ρ N=1,293kg/Nm 3If the standard volume flow is known, the required measuring range of the differential pressuretransmitter can be determined with the help of the following formula:whereV N = Standard volume flow [m^3/h]GmbH

D−FL 100 Seite 30Inner diameter(mm)c-factorInner diameter(mm)c-factor300 0,6931 900 0,7749350 0,7356 1000 0,7773400 0,7442 1100 0,7793450 0,7506 1200 0,7813550 0,7592 1350 0,7816600 0,7634 1500 0,7839650 0,7658 1750 0,7857700 0,7685 2000 0,7871750 0,7703 2250 0,7873800 0,7721 2500 0,7876850 0,7736 ≥ 2800 0,78789.2. Selecting a differential pressure barThe differential pressure bar is available in two models. The model used depends on the inner diameterof the duct/stack. Bars of smaller diameter are recommended for stacks of smaller diameter. Thefollowing table shows the suitability ranges of the two differential pressure bars:Bar typeD-FL100-ID-FL100-IID-FL100-llIInner diameter400-2000 mm(15 3/4 in. - 78 3/4 in.)2000-4000 mm(78 ¾.-.157 1/2 in.)>4000 mm(>157 1/2 in.)GmbH

D−FL 100 Seite 319.3. Selecting the differential pressure bar materialThe standard material of the differential pressure bar is stainless steel. Special applications with criticalgases may require a differential pressure bar made of a different material. The following table gives arough overview of application ranges of different materials. Other materials can be provided only uponrequest.MaterialCrNiMoTi 17 12 2(standard material)Area of application1.4571 Moderately corrosive environmentNiMo16Cr15WHastelloyC-2762.4819Durable, withstands various chemicalsChemical and petrochemical industriesCurrent plants and waste incinerators running onfossil fuels, as well as smoke gas desulphurizationplantsProduction of organic acidsNiCr15Fe Inconel 6022.4816Can be used up to 850°C (from 600°C)KilnsCatalytic generators in petrochemical processes9.4. Selecting the Type of InstallationDifferential pressure bars are available in various installation designs. They can be delivered with orwithout counter bearings. Use of a counter bearing is recommended for stacks with large innerdiameters and also if unusually large forces in the gas could affect the differential pressure bar andcause resonance. The counter bearing is therefore a standard option for the differential pressure bar.The differential pressure transducer can also be connected directly to the differential pressure bar with aswitching valve and an adapter. If lack of space or other factors make this configuration impossible, adifferential pressure bar with a flange for connecting to a pressure line is available. It, in turn, willconnect the transducer/switching valve to the differential pressure bar (standard).GmbH

D−FL 100 Seite 329.5. Ordering Information / Technical OverviewFollowing is a drawing of equipment parts and a description of the parts. (Please complete themeasuring point questionnaire in section 10 to ensure ordering the correct differential pressure bar hasbeen ordered.)Fig. 22:Overview of partsDescription Part No. Part No. Part No.up to 2 m 2-4 m greater than 4mDifferentialPressure Bar IDifferentialPressure Bar IIDifferentialPressure Bar IlI1. Adapter for switching valve (option for item 2) FL100A1 FL100A2 -2. Adapter for hose connection(alternative for item 1)FL100SF1 FL100SF2 FL100SF33. Installation flange (set of two) FL100MF1 FL100MF2 FL100MF34. Counter bearing FL100GL1 FL100GL2 FL100GL35. Flow differential pressure bar FL100DS1 FL100DS2 FL100DS36. Differential pressure transducer → FL100DDM ←7. Switching valve (optional) → FL100UH ←8. Servo drive → FL100SD ←GmbH

D−FL 100 Seite 33DescriptionHose (10m, optional other lengths available)Hose clamp (optional)Microprocessor control (optional)Fieldhousing for FL100-10Absolute pressure transducer (optional)Temperature transducer (optional)Part No.wdiluftsch100wdischelle100FL100-10FL100-GFL100ADMFL100TMErsatzteile Art-Code Art-Code Art-CodeSonde I Sonde II Sonde IlI... Gasket for adaptor FL100DTA1 FL100DTA2 FL100DTA3... Gasket for flange FL100DTF1 FL100DTF2 FL100DTF3... Rubber washer for cross-over cock → FL100DTU ←...Lever for cross-over cock → FL100HEU ←Parts required for each diameterOrder No. Description Diameter0 - 2.0 m *Standard model (Material 1.4571 **)FL100A1 Installation flange l 2x +Diameter2.0 - 4.0 m *Diameter4.0 - 8.0 m *FL100A2 Installation flange ll 2x +FL100A3 Installation flange lll 2x +FL100DS1 differential pressure bar l *** +FL100DS2 differential pressure bar ll *** +FL100DS3 differential pressure bar lll *** +FL100GL1 Counter bearing l +FL100GL2 Counter bearing ll +FL100GL3 Counter bearing llI +FL100DDM Differential pressure transducer + + +FL100UH 1 switching valve + + +FL100SF1 Adapter for hose connection to flange I +FL100SF2 Adapter for hose connection to flange II +FL100SF3 Adapter for hose connection to flange IIl +* Exterior diameter of duct/stack (flange to flange)GmbH

D−FL 100 Seite 34** Other materials such as Hasteloy available upon request*** Indicate inner and outer diameter of duct/stackGmbH

D−FL 100 Seite 359.6. Illustration of equipment variations9.6.1. Variant equipment, outside stackFL100 System I SFL100 System II SFL100 System III SFL100 System IFL100 System IIFL100 System I EFL100 System II EFL100 System I PFL100 System II POption(absolute pressure measurement):Measuring transducer:FL100ADM-HFL100ADM-S←FL100EVWelded hose connection:FL100EVOption(automatic back purging):FL100ARfl100_031_000Fig. 23:Variant equipment, outside stackGmbH

D−FL 100 Seite 369.6.2. Variant equipment, inside stackFL100 System IFL100 System IIFL100 System I SFL100 System II SFL100 System III SFL100 System I EFL100 System II EFL100 System I PFL100 System II Pfl100_033_000Fig. 24:Variant equipment, inside stackGmbH

D−FL 100 Seite 379.6.3. Mounting, differential pressure transducerFL100 System I SFL100 System II SFL100 System III SFL100 System IFL100 System IIFig. 25:Mountingplate, differential pressure transducerGmbH

D−FL 100 Seite 3810. Calculation sheet D-FL 100Each D-FL 100 system is delivered with the calculation sheet. After the projectation is completed, thecustomer gets a copy of this data sheet. The calculations are done on MS Excel. The program isexplained in the next section.D-FL 100 calculations / circular stackCustomer: Example date: 01.07.99Ref. no.: XYZ due day:Stack:Order no.:power plantproject offerParameters of the flue gas channelflow N or [Nm^3/h] standard flow flow N or ERROR!!!flow or [m^3/h] flow (working conditions) flow orv 21,6 [m/s] gas velocity (working conditions)D 1930 [mm] inner diameterflange length: 120 [mm] wall tickness, standard 240 mmt 35,8 [°C] temperatureP 1013 [hPa] absolute pressureρn 1,293 [kg/Nm^3] standard densityk 0,7867 correction factorn 7 number of ring zonesProbe no. 2 according to the inner diameter 1, 2 or 3Results of the calculationN-flow 201129 [Nm^3/h] standard flowflow 227489 [m^3/h] flow (working conditions)v 21,6 [m/s] gas velocity (working conditions)rho 1,143 [kg/m^3] density (working conditions)dP 4,31 [hPa] resulting differential pressureThe following transmitters are recommended:zero point spandiff. press. transmitter span: dP/sq.rooted 0 5,3 [hPa]abs. press. transmitter sp.: P 900 1100 [hPa]temp. transmitter span: T 0 100 [°C]Calculation formula (standard volume flow):Vn= KxP*dP( 273, 15+T) * with:calculated: Kx = 53507Vnstandard volume flow [Nm^3/h]Ppressure (working cond.) [mbar or hPa]Ttemperature [°C]dPdifferential pressure [mbar or hPa]K 0 020763 D 2= , * * kxρNPage 1GmbH

D−FL 100 Seite 39Customer: XYZ date: 01.07.99Ref. no.:due day:Stack:Order no.:power plantproject offerSituation: vertical Material: 1,4571Probe no. 2 Material: 1,4571probe length ls = 2150 mmflange length lfl= 120 mmlength profile lp= 2065 mmmiddle of the duct lm= 1077 mmcross section duct:diameter holes:2,926 m^210 mmnumber of holes: 14l1 l2 l3 l4 l5920 847 766 675 571l6l7442 255Page 2GmbH

D−FL 100 Seite 4010.1. Explanation of the calculation sheet D-FL 100Page 1First entry box: „Parameters of the gas channel“In this box the main data of the application is requested. In the first three lines only oneparameter has to be known: either the standard flow [Nm³/h] or the flow under workingconditions [m³/h] or the velocity [m/s].The inner diameter D and the flange length are used for the construction of the differentialpressure bar. The parameter n states the number of ring zones. In the flow probe 2*nmeasuring points are used. The probe number indicates the type of flow probe: Type 1 is usedfor a duct up to 2 m diameter, flow probe 2 is used for diameters between 2 and 4 m and flowprobe 3 is used for diameters between 4 and 8 m. If the dust-concentration is higher than 30mg/Nm³ flow probe 1 is not used. In that case flow probe 2 replaces the type 1.The parameters temperature t, absolute pressure P (static pressure inside the stack), thestandard density ρ n are used to calculate the range of the differential pressure transmitter.Second box: „Results of calculation“In this box the correspondent values for the standard flow, the flow under working conditionsand the velocity are calculated. Additionally the density under working conditions and thedifferential pressure are calculated.Third box: „The following transmitters are recommended“The span of the differential pressure transmitter normally is programmed a little bit greater thanthe calculated differential pressure from the data of the application (standard dP / 0.81; this isequal to 90% of the flow range). The advantage is that the transmitter has not to berecalibrated if the flow is a little bit greater than the data given from the application.The span of the absolute pressure transmitter is by default 900-1100 hPa.The span of the temperature measurement is based on the data given from the customer.Fourth box: „Calculation formula (standard flow)“This formula is based on the equation 5 (V n ) in the manual:VThis can be rearanged like:Vn2ΔP T + 273,15 Pn= A· k · ··ρ T+27315 , PΠ 273.15 3600 · 100= · 2 · ·4 1013 1000n 2n2D · k P· ·ρ T + 273,15nn·ΔPwhereby: T n 0°C D inner diameterP n 1013 hPa ρn standard density at 0°C3600 seconds per hour 100 100Pa per mbar or hPa1000 mm per mGmbH

D−FL 100 Seite 41If we want to put all the constants together the formula looks like (formula in calculation sheet):The constant Kx is calculated according:V = PKx · · Δ PnT + 273,1522Π 273.15 3600 · 100 D · k 0,020763 · D · kKx = · 2 · ·· =24 1013 1000 ρρnnHow to use this formula in a data logger (DMS 285/ DMS500 or similar)For the use of the formula always the dimensions stated below on the calculation sheet haveto be taken into account.If the transmitters are delivered from DURAG, the differential transmitter is programmed with asquare rooted output signal (4-20 mA). The temperature and the absolute pressure transmitterare programmed with a linear output signal (4-20 mA). For the evaluation formula stated on thecalculation sheet this means, that the programmer has to take care that the differentialpressure is not square rooted twice.Example :For the DMS 500 the linear input equation is:y = b · x+cwhereby x mA Signaly the physical value thatcorresponds to the mA inputFor the differential pressure transmitter with a span of 4.2 hPa / square rooted this means:42hPa . = b · 20mA + c0hPa = b · 4mA + cThe coeffizients b and c can be resolved out of this two equations: b=0.12808 c=-0.5123y = 0.1280 · x - 0.5123dpThe calculated y out of the equation replaces the square root of the differential pressure in theformula of the standard flow.For the temperature transmitter with a span of 400°C this means:400° C = b · 20mA + cGmbH

D−FL 100 Seite 420C ° = b · 4mA + cThe coeffizients b and c can be resolved out of this two equations: b=25 c=-100y = 25·x-100tThe y out of this equation replaces the T in the formula of the standard flow. The square roothas to be done inside the DMS500.For the absolute pressure transmitter with a span of 900-1100 hPa this means:1100hPa = b · 20mA + c900hPa = b · 4mA + cThe coeffizients b and c can be resolved out of this two equations: b=12.5 c=850y = 12.5 · x + 850PThe y out of this equation replaces the P in the formula of the standard flow. The square roothas to be done inside the DMS500.The final formula inside the data logger is:Vn= Kx·ytyP·+ 273,15 ydpPage 2On page 2 the mechanical dimensions are calculated. It is necessary for every application tocheck the length of the probe. If the length is not correct, the differential pressure bar hasto constructed completly new.The program calculates the positions for the measuring points according to the formula statedin the VDI 2066. It is important that no measuring point is inside a tube of the flanges. This isdone by the program. However it should always be verified.GmbH

D−FL 100 Seite 4311. Measuring Point QuestionnaireGmbH

D−FL 100 Seite 44GmbH

D−FL 100 Seite 45GEMEINSAMESMINISTERIALBLATTdes Auswärtigen Amtes / des Bundesministeriums des Innern / des Bundesministeriums der Finanzendes Bundesministeriums für Wirtschaft / des Bundesministeriums für Ernährung, Landwirtschaft und Forstendes Bundesministeriums für Familie, Senioren, Frauen und Jugend /des Bundesministeriums für Gesundheitdes Bundesministeriums für Umwelt, Naturschutz und Reaktorsicherheitdes Bundesministeriums für Raumordnung, Bauwesen und Städtebaudes Bundesministeriums für Bildung, Wissenschaft, Forschung und Technologiedes Bundesministeriums für wirtschaftliche Zusammenarbeit und EntwicklungHERAUSGEGEBEN VOM BUNDESMINISTERIUM DES INNERN47. Jahrgang ISSN 0939-4729 Bonn, den 2. Dezember 1996 Nr. 42Bundesministeriumfür Umwelt, Naturschutz und ReaktorsicherheitBundeseinheitliche Praxisbei der Überwachung der Emissionenund der Immissionen- RdSchr. d. BMU v. 11. 10. 1996 - IG I 3 - 51 134/2 -Eignung von Meßeinrichtungenzur kontinuierlichen Überwachung von EmissionenUnter Bezugnahme auf Nummer 3 der Richtlinie überdie Eignungsprüfung, den Einbau, die Kalibrierung unddie Wartung von Meßeinrichtungen für kontinuierlicheEmissionsmessungen - RdSchr. d. BMU vom 1. 3. 1990 -IG I 2 - 556 134/4 (GMBI 1990, S.226) - wird nachAbstimmung mit den zuständigen Länderressorts dieEignung der folgenden Meßeinrichtungenbekanntgegeben:GmbH

D−FL 100 Seite 46II.Eignung von Meßeinrichtungenzur kontinuierlichen Messung von Bezugsgrößen1. Abgasvolumenstrom1.1 D-FL 100 mit Meßumformer SITRANS P 7M74430oder Contrans P ASA 800Hersteller:DURAG Industrie Elektronik GmbH & Co. KG, HamburgEignung:Für Anlagen gemäß 13., 17. BImSchV und TA LuftPrüfbericht:TÜV Nord e.V., Hamburg, 128CU11650vom 29. 3. und 8. 8. 1996GmbH

D−FL 100 Seite 47EG-KonformitätserklärungEC Declaration of ConformityHerstellerManufacturerDURAG Industrie-Elektronik GmbH & Co KGAnschriftAddressKollaustr. 105, D22453 HamburgProduktbezeichnungProduct descriptionVolumenstrom-Messsystem D-FL 100Volume Flow Measuring System D-FL 100Das bezeichnete Produkt stimmt mit den Vorschriften folgender Europäischer Richtlinie überein,vorausgesetzt, dass es installiert, gewartet und entsprechend seiner Bestimmung eingesetzt wird. Dieeinschlägigen Vorschriften und Hinweise aus der Bedienungsanleitung sind zu beachten.The described product complies with the following provisions of Council Directive, provided that it isinstalled, maintained and used in applications for which it was made, in accordance with relevantinstallation standards and manufacturer’s instructions.Richtlinie des Rates 89/336/EWG (EMV), geändert durch 91/263/EWG, 92/31/EWG und 93/68/EWGCouncil Directive 89/336/EEC (EMC), changed by 91/263/EEC, 92/31/EEC and 93/68/EECWir bestätigen die Konformität des oben bezeichneten Produktes entsprechend den Normen:We confirm the conformity of the above mentioned product according to the standards:EN 50 081-2 (94)EN 50 082-2 (94)EN 55 011 (92)ENV 50 140 (95)ENV 50 141 (93)EN 61 000-4-2,4,8 (94)AusstellerIssuerDURAG Industrie Elektronik GmbH & Co KGOrt, DatumPlace, dateHamburg, 04.04.1996RechtsverbindlicheUnterschriftLegally bindingSignatureppa. (Norbert Rink)GmbH

D−FL 100 Seite 48DURAG GROUP company addressesDURAG GmbHKollaustr. 105 ▪ 22453 HamburgTel. +49 40 55 42 18 – 0 ▪ Fax +49 40 58 41 54E-Mail: info@durag.deDVN – DURAG Vertrieb NordKollaustr. 105 ▪ 22453 HamburgTel. +49 40 55 42 18 – 0 ▪ Fax +49 40 58 41 54E-Mail: dvn@durag.deDVO – DURAG Vertrieb OstMeißner Ring 4 ▪ 09599 FreibergTel. +49 37 31 30 04 – 0 ▪ Fax +49 37 31 30 04 – 22E-Mail: durag.freiberg@durag.deDVS – DURAG Vertrieb SüdWeidenweg 16 ▪ 73087 Bad BollTel. +49 71 64 9 12 25 – 0 ▪ Fax +49 71 64 9 12 25 – 50E-mail: info@dvs-badboll.deDVW – DURAG Vertrieb WestAn der Pönt 53a ▪ 40885 RatingenTel. +49 21 02 74 00 – 0 ▪ Fax +49 21 02 74 00 – 28E-Mail: dvw@durag.deDURAG France SarlParc GIP Paris Charles de Gaulle49 rue Léonard de VinciBP 7016695691 GOUSSAINVILLEFranceTel. +33 1 30 18 11 80 ▪ Fax +33 1 39 33 83 60E-Mail: info@durag-france.frDURAG UK OfficeHoneysuckle CottageRidding BankStoke-on-TrentStaffordshire, ST4 8SBGreat BritainTel. +44 17 82 65 76 66 ▪ Fax +44 17 82 64 60 20E-Mail: durag.uk@durag .deDURAG, Inc.Southridge Business Center,1355 Mendota Heights Road,Suite 200Mendota Heights,Minnesota MN 55120USATel. +1 65 14 51 – 17 10 ▪ Fax +1 65 14 57 – 76 84E-Mail: info@durag.comDurag India Instrumentation Private Limited#143/16, 4th Main Road,Industrial Town, RajajinagarBangalore 560 044IndiaTel.: + 91 80 23 14 56 26 & 23 14 56 27Fax: + 91 80 23 14 56 26 & 23 14 56 27 Extn. 30E-Mail: info@duragindia.comDURAG ChinaRoom 708 ▪ TSENG CHOW CommercialMansion1590 Yan An West RoadShanghai 200052 ▪ P.R. ChinaTel. +86 21 62 80 82 77 ▪ Fax +86 21 62 80 92 36E-Mail: durag.china@durag.deGmbH

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