DMI - Manoraz
Contents
1. 17 10 TE NACA OA ee MM 18 IT DIMENSION ee Um 20 USE OC ANON Ss ee en ee 21 13 Declaration of 22 Manufactured and sold by Kobold Messring GmbH Nordring 22 24 D 65719 Hofheim Tel 49 0 6192 2990 Fax 49 0 6192 23398 E Mail info de kobold com Internet www kobold com DMI 09 00 DMI 3 Specific Application The DMI is to be installed only in the specified applications Every usage which exceeds the specifications is considered to be non specified Any damages resulting thereform are not the responsibility of the manufacturer The user assumes all risk for such usage The application specifications include the installation start up and service requirements specified by the manufacturer 4 Operating Principles The flowrates of liquids with a conductivity of at least 50 uS cm can be measured with this flowmeter Miniflow Faraday s Laws of Induction state that a voltage is generated which is proportional to the average flow velocity This signal voltage is measured at two electrodes which are in contact with the fluid Various signals are available at the outputs of the converter for further processing e g flowrate proportional pulses 20 mA current output min max contact output for process monitor ing The electrical connections are made with a plug 5 Instrument Inspection These devices are checked be2. Electronic Power supply Ripple Power consumption Display Electr connection Impulsausgang fest eingestellt Pulse width Pulse frequency Output signal Page 18 PEEK or PETP Hastelloy C Hastelloy C 10 bar over whole temp range 25 C 110 C PEEK 25 60 PETP 25 50 min 50 uS cm 3 x DN inlet 2 X DN outlet 3 f r Q gt 0 07 x Q max Q maxX 0 0021 f r Q lt 0 07 x Q max Option 1 596 of actual range lt 0 2 of actual range adjustable 0 10 of the adjusted range Hysterisis 1 5s step function 0 99 Adjustable between 5 40 Sec 61 4 Hz IP 65 EN 60529 15 m s max axeleration at 10 150 Hz series DMI don t have any parts loading into the measuring tube The pressure loss disregardingly small 16 8 31 2 VDC or 16 8 26 4 VAC 5 96 5W 3 line 97 x 32 pixel plug in DIN 43650 1 pulse Liter Gallon 20 ms max 20 Hz 0 or 4 20 mA adjustable Load lt 600 Ohm DMI 09 00 DMI Optocoupler The opotcoupler output can be set either as a pulse output or switch output a Pulse output passive Optocoupler Voltage 16 lt 0 lt 30V 0V lt Uce lt 2 V Current lt Icen lt 0 2 2 mA lt 1 220 mA frequency 20 pulses sec Pulse width fixed 20 ms or b Switch output Function adjustable Example forward backflow switching min max contact system alert Technical data optocoupler
3. Arrow keys are used to scroll forward throught the menus All desired parameters can be accessed 9 The ENTER function requires that both of the arrow keys be pressed simultaneously ENTER is used to turn the program protection on and off to change and fix new parameter values Page 12 DMI 09 00 DMI 8 3 Data Entry instructions Condensed Form Action use keys Display Information Starting poini y 233 55 Process intormation min SET Example Flowrange setting arbitrary parameter Omax is displayed Find Pararneler Program Protection Prog Protection on Program Protection Program Protection of Direct Numeric Entry Entry from a Table Action use keys Display Inform Action use keys Display Inform Find arrow kay m 233 55 Find arrow key Submenu Parameter subrnenu mar 0 nd currant output LOUPE HN Change Change m Pie t Parameter ENTER t Cmax Parameter ENTER t 0 20mA turrenti me l min Change tram 2 Current output B io 4 20 mA EH _ Wm JH 6x find desired TAT Current output currant 4 20 mA Emer the desired numbers in accept new Sequere current nulpit Ex 2 value ENTER Current output 4 20mA accepi new Oma Gmax value ENTER ER 620 imin Exit from Omay Program Protection Find Parameter v off Prog Protection Turn Prag Pratecbon Program Protection on
4. If DMI should measure only in one flow direction a straight pipe section of 3 x DN upstream and 2 x DN downstream is required If DMI should measure in both flow directions 3 x DN straight pipe section upstream and downstream is required Page 4 DMI 09 00 DMI Valves or other shutoff devices should be installed downstream form the flowmeter so that it connot drain A slight slope in the pipeline of approx 3 is advantageous in eliminating gas pockets in the flowmeter Installations in vertical pipelines are ideal when the fluid flows up Installation in drop lines i e the fluid flows from the top to the bottom should be avoided because it is impossible to assure the flowmeter will remain full due to an equilibrium condition which may exist between the downward flowing fluid and gas being forced upward DMI 09 00 Page 5 DMI In general the flowmeter should be installed in the pipeline with the PG Connectors facing down When installed in a horizontal pipeline the imaginary line between the two electrodes should be horizontal if at all possible to prevent air or gas bubbles from interfering with the flow signal which is measured at the electrodes The position of the electrode axis is shown in the adjacent figures Electrode axis Entrained gas bubbles carried along with the fluid cause flow measurement errors When installed in free discharge lines the flowmeter should not be located in the high point in the
5. of the flow range setting alarm will nurmarkc always be indicated in the display An output signal can only be obtained e m the submenu Prog oulpul Min Alarm Max Alam or Min Max Alarm was selected Deim value Gr fis Alm im 0 oe Pinning see connection diagram Switching mystereses 1 DMI 09 00 Page 15 DMI Submenu Parameter Entry Type i Comments Selectable 0 20 mA or 4 20 mA E Dalasa 8 4 20 ma Exit the submenu 1 or fix new selection with with 4 20 mA the current output during alarm condition can be set tn mA 3 6 mAs 21 m with 0 20 mA the current output during alarm condition can be set to O mA 21 Dale Eve deut al darem LT m lout at Alarm The totalizer in the display indicatas the forward and tha reverse tatalizar as a single value The totalizer can be reseted to zero by pushing Lo Exit the submenu 1 Manual adjustment of system zero Valve must be closed Flowmeter must be full and flow must be at zero The automatic zero adjustment is limited by pressing Enter The limit for the zero adjustment is 50 Hz If the zero automatic System zero adj exceeds this value no adjustment is made The value determined by the converter is displayed in the 2nd ling Exit the submenu Select if flowrate should ba indicated in or in engineering units in the display Switch over from tn the engeneering unit selec ted in the submenu Unit fix new selectian with Ente
6. pipeline or at the outlet end of the pipeline flowmeter drains gas bubbles Standing eddies after partially open valves or when there are tangential inflows upstream of the flowmeter which persist into the flowmeter should be avoided If a pump is used to produce the flow the flowmeter should be Page 6 DMI 09 00 DMI installed on the pressure side of the pump In mixing systems the flowmeter should be installed in a location where the complete mixing has taken place Non homoge neous fluid conditions in the flowmeter are to be avoided Pulsation dampers should be utilized where required The ground connection between the two plugs on the converter housing is to be connected to a good ground There are grounding electrodes integrated in the meter tube in the flowmeter The meter tube and the electrodes integrated in the meter tube come in contact with the fluid Check before start up that the materials used are chemically resistant to the fluid being measured Gaskets should be used when installing the flowmeter These should also be compatible with the fluid being metered Assure that the maximum temperature will not exceed the fol lowing values a For meter tubes made of PEEK max 110 C b For meter tubes made of PETP max 60 C The meter tube material is listed on the Instrument Tag on the flowmeter Observe the max torque values when tightening the connectors on the DMI Torque Specifications for process
7. Operating instruction for Electromagnetic Flowmeter Model DMI DMI 1 Note These instruction are to be read before unpacking and operating the device and are to be closely heeded at all times The devices are only to be used maintained and serviced by persons familiar with these operating instructions and with the prevailing regulation applying to procedural safety and the prevention of accidents 2 Contents Page 2 ls NO eare E 2 Ge T ee 2 3 SPECINE ABBICA ON ee ee 3 4 Operating 3 5 Instrument InSDOCllOD uceasierserers vacui ku ravra ku eani d 3 Mecnamcal COMME CUO e TTE 4 6 WIINSTAN ATION Stall Deine nee 4 7 _EICCUGAl CONNECH OM anne 9 7 1 Signal Outputs and supply 9 7 2 Grounding 9 7 3 Interconnection Diagram 10 AOU RET 11 8 1 Overview of the Factory Settings in the converter 11 ETT 11 8 3 Data Entry instructions Condensed 13 8 4 Data Entry 14 9 Mechanical putting into
8. again Jf Exit point Process V 233 55 information GCoryarter l min remains online WV 32251 DMI 09 00 Page 13 DMI 8 4 Data Entry Instructions Submenu Parameter Entry table Prog Protection off tabla lable andy for Info numeric fable Aci numeric table u m zer 14 m rs Teg Comments ON OFF Data can only be entered after the Prog Protection has been turned off Exit the submenu 1 German English Dela La abe oy e Creer Select preferred language by used of arrow keys and fix new selection with DN 10 15 25 50 see tag Widest measuring range the meter can be set to Automatic setting based on the flowmeter size selection Flow range for forward and reverse flaw directions Dalaran iz Aangel mir flow range setting 0 0 5 m s max flow range setting 0 10 m s The engineering unit is to be set in the submenu Unit Vs l min bh galis galfi s nmn Range 5 to 40 seconds is 5 sec Range 0 10 of the selected flow range end Affetcs to the display indication amd all outputs The switching point for the how cutoff incorporates a hysteresis of 0 5 55 Dalauit vetve for ow flow culalf io T 95 External zero ratum or totalizer reset or without function This sub menu will only be displayed if this option was ordered If this functi
9. connection on PETP Avoid usage of ferromagnetic process connectors DMI 09 00 Page 7 DMI Page 8 Information for using the threaded Adapters a Flowmeter is installed in a plastic pipeline DN Suitable for plastic Threaded Connection at Miniflow for pipelines with 2 outside Plastic Pipelines G 3 4 no threaded adapter G 1 with threaded adapter G34 G1 G1 2 with threaded adapter G1 4 G1 12 234 with threaded adapter G2V2 G2 Example The DMI is to be installed in a plastic pipeline with a 20 mm outside diameter The above table indicates that a 1 2 DN 15 meter size is required The adapter shipped with the flowmeter must be used This increased the 34 thread on the flowmeter to G 1 so that the coupling union which has a 1 thread size for size plastic pipeline can be connected to the flowmeter b Flowmeter is installed in a metal e g copper pipeline DN Suitable for plastic Threaded Connection at DMI for Metal pipelines with outside pipeline 14 mm 2 tubing G 3 4 no threaded adapter 18 mm 3 tubing G 3 4 no threaded adapter 28 mm 1 tubing G1 no threaded adapter 54 mm 2 tubing 221 no threaded adapter Example The DMI is to be installed in a metal pipeline with a 14 mm outside diameter i e 1 2 metal tubing The above table indicates that 3 8 DN 10 meter size is required The adapter shipped with the flowmeter must be removed since it is
10. fore despatch and sent away in perfect condition should the damage to a device be visible we recommend a thorough inspection of the delivery packing In case of damage please inform your parcel service forwarding agent immediately since they are responsible for damages during transit Scope of delivery e Magnetic Inductive Flowmeter e Service manual DMI 09 00 Page 3 DMI 6 Mechanical connection The DMI incorporates a threaded process connection The diameter difference of the transition from the pipeline to the flowmeter should be kept to a minimum For this reason additional threaded adapters are mounted on the flowmeter and shipped together exceptions flowmeter size 3 8 DN10 and flowmeters with NPT threads These adapters provide the ability to install the flowmeter using a coupling union either in plastic pipelines using the threaded adapter or to install it in copper or other metal pipelines by re moving the threaded adapter and connecting directly to the threads on the flowmeter see the following Table for an overview 6 1 Installation and start up The DMI should not be installed in the vicinity of strong electromagnetic fields The installation orientation is arbitrary It is essential that the flowmeter always be completely filled with fluid Partial filling results in measurement errors The DMI measures in both flow directions The forward flow direction is shown by the arrow on the meter primary
11. on i amp available 20 mA will be omitted then Note If the name tag indicates a Variant 5 this option is available for Prog input je DMI 09 00 DMI Selectable as pulse output or forward reverse flow direction signal or Min Alarm Max Alarm Min Max Alarm General Alarm No Function Note In conjunction with pulse output internal setting are 1 pulse per liber ar per gallon pulse width 20 ms pulse frequency 20 Hz Ciia for Peng oul General alarm Pulse weight selectable 0 1 pulse or 1 pulse or 10 pulses Pulse entny fram tabla per litre only for infor no settings possible Automatic setting of pulse only for info weight based on adjusted flaw range On Off ratio 1 1 pulse on width off width if pulse width is within 2550 ms imax pulss width and within 20 ma min pulse width If other pulse width is required change pulse weight or flow range Calculation of pulse width 30 Omax x pulse weight pulse width in seconds insert Gmax in limin and pulse weight in pulse Liter in above equation Limit alarm range 0 105 75 of the ow range Selling An alarm wall numere always be indicated in the display An output signal can only be obtained if in the submenu Prog output Min Alarm Max Alarm or Min Max Alarm was selected Detaut vaius tor Max Aim i 105 Pinning see connection diagram Switching hystereses 1 ts Limit alarm range 0 105
12. only required for installations in plastic pipelines With the threaded adapter removed the 3 8 DN 10 flowmeter size has a 34 threaded connection This is the connection size required for the G 34 coupling union used with the 12 metal tubing DMI 09 00 DMI 7 Electical connection 7 1 Signal Outputs and supply power Wiring otandard DIN 43650 plug connector with PG 9 cable glands pipe cross section max 1 5mm 65 rating Open plug and wire according following instructions Three PIN Plug Supply power 1 24 V AC DC 2 GND Ground Four PIN Plug Signal Outputs Pin 1 2 20 mA or contact input option Pin 3 4 Pulse contact output option Also see Section Interconnections Peripherals 7 2 Grounding When installing the flowmeter in a metal to the plug Point A together with the supply power left plug then the connection at Point B must be at the same potential as at Point A Attention If a ground connection is made to the plug Point A together with the supply power left plug then the connection at Point B must be at the same potential as at Point A If this cannot be assured then the ground should be connected at only one point either in the plug Point A or externally to the flowmeter Point B If is recommended that a ground be connected to Point B See fig 11 LLL Ta e Bes dE Ground oa Potential equalization only at metal pi
13. peline DMI 09 00 Page 9 DMI 7 3 Interconnection Diagram Interconnection Examples for Peripherals Option A Pulse output optocoupler Pulse output passive and current output 0 4 20 mA or optocoupler or contact output passive contact output passive optocoupler optocoupler and current output 0 4 20 mA internal axternal internal external Ag Ag Pulse output Tai Pulse output contact output ei contact output Aa gt Pin not used lee 04 20 mA Pin 1 mot used Option B Power supply 24 V AC DC Pin 1L 24 V AC DC 2 GND Function ground Pin 4 Signal Output Specifications The function assigned to the optocoupler of the signal output can be set in the software Function either as a pulse output or function as a contact output Pulse output passive Optocoupler specifications 16 V lt U lt 30 lt x2 V 0 mA l cep 0 2 mA 2 MA lt Ice 220 mA fmax 20 pulse sec pulse with 20 ms or Contact output passive Optocoupler The selection can only be made in the options with a display In the contact output mode one of the following signals can be set Current output selectable 0 4 to 20 mA Burdon x 600 Ohm Power supply 16 8 26 4 VAC bzw 16 8 31 2 VDC Ripple 5 Power consumption lt 5W Page 10 DMI 09 00 DMI 8 Configuration 8 1 Overview of the Factory Settings in the conver
14. r or ax submenu wilh Current output settings during an alarm condition Page 16 DMI 09 00 DMI submenu Parameter Entry Type Comments This features is being used to check the 20 mA loop and to check lee pulse output loop The meter will mol be Online amp simulation is set to on The 20 m signal and the pulse output will correspond to the settings done by arrow keys If simulation is turned on the flowrate value has be entered in 5 and to be fixed with ENTER After press to return to process display The display then shows simulation The Minilow is longer online mow By pres ging the amor key the flowrate can now be increased or decreased After completion of the simulation program the para meter Simulation must be tumed aff Simulation DL 5000 anao Data of the software being used D egacogauo1 For ABB Service only 9 Mechanical putting into operation Gas pockets It has to be accertained that the instrument is always completely filled with fluid Partial fitting as well as gas pockets results in measurement errors DMI 09 00 Page 17 DMI 10 Technical data Materials Body lining Electrodes Ground electrode Max pressure Max operating Temperature Ambient Temperature Conductivity Inlet and outlet recommended Accuracy Repeatability Creep suppression Response time Frequency of excitaion Protection Vibration resistance Pressure loss
15. see pulse output Error signal The switch output optocoupler can be set as a system alert Measurment error under reference condition Pulse output a 9 e cd j m o IL Calibration Veios 0 5 0 7 1 0 m s DMI 09 00 Page 19 DMI For Q maxon shedule below 50 l min 100 l min 300 l min 1200 l min 11 Dimensions Page 20 DMI 02 DMI 04 DMI 06 DMI 08 97 ca 51 DMI 09 00 DMI 12 Fuse Locations Location of fuse on the signal input PCB board DIP switch Lo for range setting 20mA damping etc Fuse for Power supply 500 mA T DMI 09 00 Page 21 DMI 13 Declaration of conformance We Kobold Messring GmbH Hofheim Ts Germany declare under our sole responsibility that the product Electromagnetic flowmeter Type DMI to which this declaration relates is in conformity with the standards noted below EN 50081 1 3 93 EN 50081 2 3 94 EN 50082 1 3 93 EN 50082 2 2 96 following the provision of European Directives 89 336 EWG Signed Datum 10 10 00 H Peters M Wenzel Page 22 DMI 09 00
16. ter The DMI is shipped form the factory with preset values The factory settings can be changed at the flowmeter installation site The following table provides an overview of the factory settings Factory settings Flow range DN 10 50 l min DN 15 100 l min DN 25 300 l min DN 50 1200 l min 8 2 DMI configuration The converter can now be configured using menu structured clear text displays e Flow range and damping can be set in an infinite number of steps e Additional direct reading units can be user selected for the flowrate measurements e he function assigned to the optocoupler for the pulse output can be changed e g min alarm max alarm etc Flow Range Table DN Flow Range in l min can be set anywhere between DN Flow Range in Usgal min can be set anywhere between DMI 09 00 Page 11 DMI Display format The display of the DMI magmeter is a graphic display with 97 32 pixel Display view The flowrate is displayed in the upper display line The difference totalizer which indicates forward and reverse flow as a single value is shown in the lower display line Alarms will be displayed in clear text Data entry During data entry the converter remains on line the current and pulse outputs continue to indicate the instantaneous operating values The function of the individual keys is described below Clear key is used to toggle back and forth between the operating mode and the menus
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