User's Guide Series A.6
Contents
1. Intrinsic Safety Barriers may be ordered with the Greyline instrument and are supplied mounted in the Greyline instrument enclosure Replacement barrier fuses DO DO 15 011239 may Eee BREED be purchased separately The C N CN O C NCINO RX PU GND TX C T CN C Instrument Enclosure RELAY 1 RELAY 2 RELAY 3 4 20 RS 232 RELAY 4 RELAY 5 INPUT containing the 2ISB Intrinsic Safety Barriers must be VOLTAGE FREE DRY CONTACTS installed a non hazardous LIN G BY CUSTOMER location The Sensor connecting cable and Junction boxes may be located in the NON HAZARDOUS LOCATION LIMIT hazardous rated area CLASS I GROUPS C D NOTE BARRIER EQUIPPED UNITS CLASS II GROUPS E F G ARE FACTORY WIRED WITH CLASS 111 GROUND THROUGH THE INSTRUMENT CHASSIS POWER INPUT GROUND SENSOR MUST BE CONNECTED TO A J GOOD GROUND lt 1 Ohm WITH A 12 AWG CONDUCTOR REPLACEMENT FUSE ASSEMBLY ORDER PART ISB 011239 160 Intrinsic Safety Barrier Specifications Certified rated 9 3V max 25 ohms min Recommended Stahl Model 9001 02 093 390 10 Page 28 Gr S yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 ENCL2. ERE STORING Set Relays 1 3 4 5 optional to Off Pulse or Flow Pulse press Y and set digits to the flow volume increment required between relay pulses Use this feature for remote samplers chlorinators or totalizers Minimum time between pulses is 1 second and pulse duration 1s 350 milliseconds Flow press and set digits to the required On and Off set points Use this feature for flow control and alarms Page 9 Greyling inslrumenls inc Simul E ADJ an mp Paster or Slawe Hey Password Lom 24 45 oe 1 mi iT DFM IV Doppler Flow Meter Manual Series A 6 SPECIAL FUNCTIONS SPECIAL FUNCT ION mm ADJ 4 888 Hee STORING DF MTI ser shows software version installed enter instrument Tag Number 0 9999 Date with Optional Data Logger use the Y or keys to change date as required Time with Optional Data Logger use Y or f keys to change time as required Select ez to reset totalizer Press 3 times to select Store to erase all user settings and return instrument to factory default settings exercises 4 20mA output digital display and control relays Simplifies calibration of remote devices on the 4 20mA loop and checks set point operation of Relays calibrated in Flow mode Go Y for 1663 Use to fine tune the 4mA and 20mA calibration of the 4 20mA output Adjustment range is 1mA to ImA in 0 002mA steps Important The 4 20mA ou
3. 0 62 20 36 0 62 20 36 0 67 20 26 0 72 20 16 0 78 20 04 0 84 19 92 24 25 80 0 63 24 54 0 68 24 44 0 73 24 34 0 79 24 22 0 79 24 22 0 85 24 10 0 92 23 96 Cast Iron Pipe AWWA Standard Class A Class B Class C Class D 100 Ft 43 PSIG 200 Ft 86 PSIG 300 Ft 130 PSIG 400 Ft 173 PSIG O D WALL ID O D WALL LD O D WALL LD O D WALL T D 56 66 53 96 57 10 54 00 62 80 60 02 63 40 60 06 75 34 72 10 76 00 72 10 87 54 84 10 88 54 84 10 Class E Class F Class G Class H 500 Ft 217 PSIG 600 Ft 260 PSIG 700 Ft 304 PSIG 800 Ft 347 PSIG O D WALL LD O D WALL I D O D WALL O D WALL 2 24 22 28 22 54 1 15 0 54 1 27 26 90 1 31 24 26 90 1 45 33 10 1 55 30 00 33 46 1 73 39 60 1 80 36 00 40 04 2 02 Page 43 DFM IV CALIBRATION RECORD Circle selected units and enter Values in blank spaces p dp I 3 84 E G n zi ES LL xt E in I LE 2m C gt O ti EC Lil E 2 E O in e F O IF TMG fe xx E Lil Lu 5 El 5 T tL e E 1 Lu Ei Fun m e in Z n x I Lt E a pea E m Dee um E Tug mE 3 Tuan z iS x i il EH 3 OR TMi TI EI I Be thd Da
4. 5 563 4 813 2973 I 4 313 625 6 625 5 761 432 562 5 189 718 1 278 191 1 160 250 7 813 406 7 625 500 7 439 593 7 189 718 7 001 812 6 813 906 12 2 923 276 2 125 375 2 900 300 2 624 438 3 364 318 3 826 233 438 3 438 531 1 500 200 1 338 281 1 939 218 1 689 343 10 750 9 750 500 9 564 593 9 314 718 9 064 843 8 750 1 000 8 500 1 125 12 750 11 626 562 11 376 687 11 064 843 10 750 1 000 10 500 1 125 10 126 1 312 14 688 656 14 314 843 13 938 1 031 13 564 1 218 13 124 1 438 12 814 1 593 18 000 16 500 750 16 126 937 15 688 1 156 15 250 1 375 14 876 1 562 14 438 1 781 20 000 18 376 812 17 938 1 031 17 438 1 281 17 000 1 500 16 500 1 750 16 064 1 968 22 000 14 000 12 814 593 12 500 750 12 126 937 11 814 1 093 11 500 1 250 11 188 1 406 16 000 20 250 875 19 750 1 125 19 250 1 375 18 750 1 625 18 250 1 875 17 750 2 125 24 000 22 064 968 21 564 1 218 20 938 1 531 20 376 1 812 19 876 2 062 19 314 2 343 Page 42 Gr 8 yl A DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 Cast Iron Pipe ASA Standard Size O D 3 4 6 8 10 12 WALL Tp wau rp wau rp wau rp wa rp rp WALL rp 14 16 18 19 50 0 54 18 42 0 58 18 34 0 58 18 34 0 63 18 24 0 68 18 14 0 73 18 04 0 79 17 92 20 21 60 0 57 20 46
5. US GALLONS 3 785 US GALLONS 0 003785 LITRES SEC 15 85 LITRES 0 001 BARRELS 42 BARRELS 34 9726 BARRELS 158 9886 INCHES PSI 0 0676 FOOT METER 0 0929 Page 40 Gr SL M Im DFM IV Doppler Flow Meter inc Manual Series A 6 PIPE CHARTS Carbon Steel amp PVC Pipe Ya Va 1 1 11 2 210 3 3 4 I i 20 22 24 26 28 30 32 34 36 42 Ductile Iron Pipe Standard Classes OUTSIDE CEMENT LINING DIA STD DOUBLE INCH REDUCE I D BY DIMENSION SHOWN Page 41 Gig SL M 2 DFM IV Doppler Flow Meter LLLI mir INC Manual Series A 6 Stainless Steel Hastelloy C amp Titanium Pipe FIRE T 5 S a Schedule 10 S a Schedule 40 S Schedule 80 S size ee ME ee 30 5 73 Em 1 pe 920 2 po 113 ni 1 315 1 185 1 097 109 133 1 660 1 530 1 442 109 140 1 900 1 770 1 682 109 2 379 2 245 2 157 109 E Mis ee SE 2 875 2 709 2 039 3 500 3 334 3 260 p 4 000 3 834 3 760 120 4 500 4 334 4 260 120 5 563 5 345 p 5 295 134 6 625 6 407 109 6 357 s 109 134 p 156 180 156 188 165 188 165 188 188 I 218 188 218 218 250 Rh pa paja Jo N N N No Schedule 60 Schedule 100 Schedule 120 Size WALL I D WALL WALL I D WALL T3 1 050 1 315 466 187 614 218 815 250 1 1 660 115 1 900 2 2 375 2 2 2 075 3 3 500 4 000 4 500
6. 255 D teme Ce fina b m ui in E E m T o z B exu Z ii 165 L 27 qu Om E d pi le Ti x m x z me TC n I sip aM 23 oZ TF ds
7. B BB 24 Flow Meter Data Sheet o o n n n n n n BB eee 25 Warranty TTC 26 Appendix A Options noia a 7 a a 5 a a osado aos 27 Data Logger o a A A A 3 2 RS232C Serial Output ra a om Gk e 40 T 37 Specifications piro a o ac 4 A e A d 2 e bo e 39 Appendix Conversion eee 40 Pipe Charts 41 Calibration Record rr 44 IMPORTANT NOTE This instrument is manufactured calibrated to meet product specifications Please read this manual carefully before installation and operation Any unauthorized repairs or modifications may result in a suspension of the warranty Available in Adobe Acrobat pdf format Page 2 Gr SL M 2 DFM IV Doppler Flow Meter En Inc Manual Series A 6 QUICK BENCH TEST Connect Sensor as shown below then Power Test operation of the DFM IV by holding the sensor in one hand and rubbing your thumb or fingers briskly across the face plastic surface of the sensor Allow 15 seconds for the DFM IV to process the signal and display a flow value CONNECTIONS POWER INPUT The standard 115VAC model requires AC power input between 100 to 130 VAC 50 60Hz 2 amp fuse 1s recommended No adjustments are necessary for voltages within this range Optional 230V AC requires power input between 200 to 260 VAC 50 60Hz See OPTIONS section of this manual for connection of optional 12VDC or 24VDC power input I
8. Shield connected to Instrument Ground stud e Reduce DFM Sensitivity setting Cross talk between two or more DFM IV flowmeters on same pipe e Turn OFF one flowmeter or follow synchronization procedure for two or more DFM IV Flowmeters Variable Speed Drive interference e Follow Drive manufacturers wiring and Grounding instructions e Relocate Flowmeter electronics Sensor and wiring away from VSD Page 19 inslrumenls inc DFM IV Doppler Flow Meter Manual Series A 6 Possible Causes Corrective Action Valve leak or Reverse flow e Test Valve Relocate Sensor farther from valve e Use Backflow Rejection Sensor connections incorrect e Refer to Connections diagram METER READING ERRATIC sensor mounted too close to valve pump or elbow e Change sensor placement Recommended 6 10 diameters from elbows and 30 diameters from pumps controlling valves orifice plates nozzles or open pipe discharge NO FLOW INDICATION 55 Signal Strength Sensitivity set too low e Increase SS Sensitivity Not enough suspended particles or gases in the fluid e Relocate sensor in more turbulent pipe section Mount sensor at 12 o clock position on horizontal pipe Coupling compound washed out or sensor loose on pipe e Remount sensor e Use Dow Corning Silicone 4 Slawe selected in SPECIAL FUMC TIONS menu with no Synchronization
9. a Dow Corning silicon compound 4 supplied Additional supply order Greyline Option CC b High Temperature compound supplied with Sensor Option SE3H Additional supply order Greyline Option AP 1W c Water based sonic compound Order Greyline Option CC30 d Electrocardiograph gel e Petroleum gel Vaseline The above are arranged in their order of preferred application d e are only good for temporary bonding at room temperature DO NOT USE Silicon RTV caulking compound silicon rubber Use the PC3 pipe clamp supplied as illustrated above or use a loop of electrical tape for temporary mounting Apply silicon coupling compound 4 to the coloured face of the sensor A bead similar to toothpaste on a toothbrush 1s ideal Do not overtighten crush the sensor The sensor must be fixed securely to the pipe with coupling material between the sensor face and the pipe Sensor installation with excessive coupling compound can result in gaps or voids in the coupling and cause errors or loss of signal Insufficient coupling compound will create similar conditions COMPOUND Over time temporary coupling compounds e g Petroleum Gel may TAPE oR w sM I SIAI gradually sag away from the sensor resulting In reduced signal strength and finally complete loss of signal Warm temperatures moisture and vibration will accelerate this process Dow Corning Silicone Compound 4 as supplied with the DFM IV and available from Greyline Instrum
10. diagram shows the DFM IV Menu system Arrows show the three directions to leave a box Pressing a corresponding keypad arrow will move to the next box in the direction shown Move the cursor or underline under numerals and increase or decrease numerals with the amp and keys At the bottom of each Menu column is a Store box To store the calibration values permanently even through power failure move the cursor under and press the Y or key If Y key 15 pressed with the cursor under Store s no changes will be stored and the system will return to the top of the Menu column Page 4 Gr S DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 Calibration Menu TION Li c gt IAL FUN OPTIONAL FEATURES S TOR IHG gc w RELAY PARAMETERS ATI IF IMG E C E he T e 3 E in me Lor m gt u 1 pth TUE 2 T pd ra s E in ia LES Liz SG STOR IMI Be i id ORD T IPIE MIMFI Qmm m TIME alla IH IMFI ITAL ilu AVERAGE Dai ge Cia 24 HR LOG ai ds la ONLY IF ENABLED Ti TiO Tri SHOWS 24 Hr FORMAT T 5 Gr S yl A 2 DFM IV Doppler Fl
11. in the group can be in MASTER mode If all units are returned to MASTER status the SYNC wiring must be disconnected Page 16 Gr 8 yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 BACKFLOW REJECTION The DFM IV can be forced to zero under backflow conditions by connecting external voltage free control relay dry contacts to the DFM IV connection terminals marked INPUT Typically the external relay will be energized or de energized in tandem with a pump or control valve The external relay must be voltage free the DFM IV generates a low voltage DC current across the INPUT terminals In response to the external relay contact closure the DFM IV display and outputs will drop to zero the Totalizer will not increment and the message Backflow Rejection will be displayed DFM IV EXTERNAL RELAY VOLTAGE FREE DRY CONTACTS BY CUSTOMER lt 4 _F 2 gt c O 0 Page 17 Er yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 ERROR WARNING MESSAGES ILLEGAL I D The value entered for Fire ID must be greater than 0 5 inches 1 26 cm and less than 180 inches 457 3 cm E ILLEGAL The value entered for aF maximum flow is too low or too high Maximum flow value must compute using pipe ID a velocity greater than 0 25 ft sec 0 076 m sec or less than 40 0 ft sec 12 2 m sec Refer to Appendix B Conversion Tables to
12. input from Master e Select Master in SPECIAL FUNCTIONS menu Power interruption No flow e Check fuse breaker Confirm flow METER READING TOO HIGH Calibration error e Review UNITS MODE menu and Pipe ID Vibration or noise on the pipeline e Decrease Sensitivity Install in another location Pipe is not full e Remount Sensor on vertical pipe Nearby velocity increasing device pump valve orifice plate e Relocate sensor gt 30 pipe diameters from velocity increasing device Local electrical noise e Ensure all Flowmeter wiring is in METAL conduit and sensor cable shield is connected to Ground stud Page 20 Greyling inslrumenls inc DFM IV Doppler Flow Meter Manual Series A 6 Possible Causes Corrective Action Variable Speed Drive interference e Follow Drive manufacturers wiring and Grounding instructions e Relocate Flowmeter electronics Sensor and wiring away from VSD METER READING DOES NOT TRACK FLOW sensor and GND wires reversed or not properly connected e Check Sensor connections Improper AC power input Ground e Use direct connection with 12 AWG wire to nearest Ground pole 1 ohm resistance Page 21 Gr S yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 COMMON QUESTIONS AND ANSWERS The pipe vibrates Will it affect the flow meter Common vibration fr
13. pipe Do not attempt to mount it on bends elbows or fittings Page 11 Greyling inslrumenls inc SENSOR MOUNTING DFM IV Doppler Flow Meter Manual Series A 6 Prepare an area 2 wide by 4 long 50mm x 100mm for sensor bonding by removing loose paint scale and rust The objective of site preparation is to eliminate any discontinuity between the sensor and the pipe wall which would prevent acoustical coupling PC3 Sensor Mounting Kit is supplied with each Greyline flow meter It includes recommended coupling compound in a plastic applicator and a stainless steel mounting bracket with adjustable pipe straps END VIEW al SENSOR Mount the pipe clamp illustrated on pipes 0 6 15 mm OD or larger Stainless steel bands included for mounting on pipes up to 32 81 cm OD Additional stainless steel bands by customer may be combined to mount on pipes up to 180 4 5 m OD SENSOR ADJUSTABLE STAINLESS PIPE STEEL STRAP Page 12 Gr 8 yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 SENSOR COUPLING For permanent or temporary bonding the following are recommended
14. L Iu m dm d m om E n 5n B Hin Le Flin Bin Flin i Press to return to to Interwal Y to Reset Loa To erase all existing data in the log press 9 to ez and Y To keep existing data in the Log press Y from Rezet Loa If you have made changes to the Start Date Time or Interval the data logger will automatically start a new session The DFM IV will display Hese Daas Left From the Herz Left display press Y to Store vez Press to and then Y to save your Data Logging setup or press Y from Store to cancel changes made above and exit without storing changes From the Data Logging Store Yes prompt the menu will return to RUM STOP SETUP Press 9 to position the cursor under FIM and press Y to activate the Data Logger to start at your selected start Date and Time The DFM IV will display SESS IO MO Press Y to return to DATA LOGGING Event based Trend Logging Event based logging stores data points only when a High or Low flow set point has been reached With cursor under Ewent press Y to HiAlm Lonim Hifmlm will log points above a selectable flow rate while Lo lr will log points below a selectable flow rate Position the cursor under Hi lm or Lorilm and press Y to the At prompt Press to the numerals column and press Y or ft to set flow alarm logging set point Press to return to Ait Page 35 Er SL M 2 DF
15. M IV Doppler Flow Meter 0 mir inc Manual Series A 6 Press Y to Interval and 9 to Sec Min column Press Y or to set the logging time interval Choose fil a RL m ot m mi gt miu 3B Hin Le Min gt Min Plain E Mn Press to return to Inter al and press Y to Reset Loa To erase all existing data in the log press to Yes and Y To keep existing data in the Log press Y from Reset Loa If you have made changes to the Start Date Time or Interval the data logger will automatically start a new session The DFM IV will display gt lt Hese Daus Left From the Hrs Left display press Y to Store Yes Press to and then Y to save your Data Logging setup or press Y from Store to cancel changes made above and exit without storing changes From the Data Logging Store Yes prompt the menu will return to RUM STOP SETUP Press to position the cursor under and press Y to activate the Data Logger to start The DFM IV will display SESSION HO Press Y to return to DATA LOGGING Logging Sessions Each time you 9 STOP in the DATA LOGGING menu Data Logger stores the current data in memory as a SESS TOM MO automatically numbered from 1 to 18 If you resume logging by the Data Logger will report that a new logging session is started and titled SESS IOM HC When you download the logger files to your PC
16. MPORTANT NOTE To comply with CSA NRTL electrical safety standards AC power input and relay connection wires must have conduit entry to the instrument enclosure Greuline _ AS ince RCVR YN YN lt E O 2 N C N O C N CN O RX PUGND TX C N CN O NC lt RELAY 1 RELAY 2 RELAY 3 4 20 RS 232 RELAY 4 RELAY 5 NPUT 5 OPTIONAL 100 130VAC 50 60 Hz VOLTAGE FREE OPTIONAL 200 260VAC 5060 Hz L N G DRY CONTACTS BY CUSTOMER GROUND STUD IMPORTANT IMPORTANT MUST CONNECT TO A ATTACH CABLE GOOD GROUND 1 Ohm SHIELDS SENSOR WITH 12 AWG CONDUCTOR 4 20mA RS232 THIS END ONLY Page 3 Gr S yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 KEYPAD SYSTEM The DFM IV has a simple 3 button calibration 9315 system Operating and calibration modes are shown on the 16 digit alphanumeric display The keypad 15 sewing used to move around the menu to calibrate the DFM IV and to view operating mode and functions A beep is sounded as each key 15 pressed If the keypad 16 not used for 10 minutes the DFM IV will automatically go to FUH mode Use the keypad to explore the Menu and become familiar with its features MENU FLOW CHART The following
17. ONNECTIONS POWER INPUT Connect only 12VDC 0 54 Amps to the and terminals for units marked 12V or 24VDC 0 27 Amps for units marked 24VDC The Power Input GND terminal must be connected to the nearest Ground pole A 1 amp fuse in line is recommended Power Consumption is 6 5 W continuous P d 12 AWG x MAX OPTIONAL 24VDC OPTIONAL 12VDC POWER INPUT 000 GND DW MEC S MUST CONNECT TO A GOOD GROUND lt 1 Ohm 12V or 1 FUSE WITH 12 AWG CONDUCTOR 24VDC __ O Page 30 Gr S yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 INSERTION FLOW SENSOR OPTION ISE 20 6 m CONTINUOUS SHIELDED COAXIAL PAIR AERE 15 m OPTIONAL TP POINTS Insertion Depth 1 8th pipe inside diameter plus 3 4 20 mm ETEN ADJUSTABLE SWAGE LOCK Orientation Screw head marks the active face and should point FITTING upstream 5 NPT Average Flow Rate Before permanent tightening of swage lock fitting the probe can be inserted to variable depths to determine the flow profile Theoretical average flow occurs at 1 8 pipe diameter 6 12 OR SPECIAL ORDER 316 STAINLESS STEEL Installation Procedure Install a 1 NPT Female Nipple on the Pipe Insert probe Tighten swage lock until it just grips the Probe then tighten 3 4 o
18. OSURE HEATER AND THERMOSTAT Option TH Instruments can be factory equipped with an Enclosure Heater and Thermostat The Thermostat is factory set to turn ON at 40 F 4 5 C and OFF at 60 F 15 5 C Power consumption is 15 Watts FACTORY CONNECTED TO AC POWER SUPPLY ENCLOSURE SUNSCREEN Option SCR Do not mount instrument electronics in direct sunlight Overheating will reduce the life of electronic components and condensate may form during the heat cool cycles and cause electrical shorts 11 280 mm Note Exposure to direct sunlight can cause overheating and moisture condensation which will reduce the operating life of electronics Protect Instruments from direct sunlight with this iridite finished aluminum sun screen Greyline Option SCR oeal conduit entries with caulking compound to further reduce moisture condensation Ir M 87978 SUE Rcx a E E E EI Page 29 Er yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 POWER INPUT OPTION 12VDC OR 24VDC DFM IV Flow Meters may be ordered factory configured for 12VDC or 24VDC power input QUICK BENCH TEST Connect Sensor as shown below then Power Test operation of the DFM IV by holding the sensor in one hand and rubbing your thumb or fingers briskly across the face plastic surface of the sensor Allow 15 seconds for the DFM IV to process the signal and display a flow value C
19. S232 Cable Connects RS232 485 Converter to a PC Cable length 6 ft 2 m with DB9M and DB9F connectors Page 38 Greuline inslrumenls inc SPECIFICATIONS Flow Rate Range Pipe Size Accuracy Displays Calibration Power Input Power Consumption Output Control Relays Back Flow Rejection Enclosure Electronics Operating Temp Sensitivity Electrical Surge Protection SE3 Doppler Sensor Minimum Pipe Diameter Maximum Pipe Diameter Operating Temperature Operating Frequency Sensor Housing Sensor Cable Submersion Rating Hazardous Locations DFM IV Doppler Flow Meter Manual Series A 6 7 4 1698 mm O 4O0 164 mm 4 5 12 150 mee 0 25 to 40 ft sec 0 08 to 12 2 m sec in most applications Any pipe ID from 0 5 to 180 12 5 mm to 4 5 m 12 of full scale Requires solids or bubbles minimum size of 100 microns minimum concentration 75 ppm Repeatability 1 Linearity 0 5 of full scale Flow Rate large 4 digit LCD in Doppler programmable engineering units NS K 10 254 mm 10 94 7276 mm Greyline 4 INSIT Zr inslrumenls inc Totalizer Menu Status Signal A Strength 16 digit LCD j alphanumeric CONDUIT ENTRY SIDE VIEW built in 3 key calibrator No drift ENCLOSURE transmitter quartz crysta
20. TE TODAYS DATE GAILY TOTAL DAILY AVERAGE PIAS FLO Ps TIME I IM FLO o e c j PREVIOUS DATE The current day plus the past 255 days of data be displayed Greyline Logger software will display up to 1300 days of data Trend Data Logging Setup From RUM S TOP SETUF press to SE TLF and then Y Site Press to position the cursor under the numeral and Y or to change the numerals The Site ID number is retained with data logging sessions to identify logs stored from different locations From Loa Site press Y toFormatted Trend and press to position the cursor under Trend Then press Y to select Time based logging Time based Trend Logging Time based logging allows you to choose Start and Stop times and a logging interval Page 34 Gr SL M 2 DFM IV Doppler Flow Meter En Inc Manual Series A 6 From Time press Y to Start DD eg Tan 6 2004 Press 9 to position the cursor and then Y or to set the Month Day and Year that logging will Start Press to return to Start Press Y to Start time and 9 to position the cursor under the time column HH MM SS 24 hour clock in Hours minutes seconds eg 23 62 16 and then or ft to set the logging start Time Press to return to Start Press Y to Interval 9 to the Sec in column Press Y or to set the logging time interval Choose ON ii R
21. USER S GUIDE Installation Operation Instructions Doppler Flow Meter Model DFM IV Manual Series A 6 Er yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 INDEX Bench Test o o o n n n n n n n n n n n n n ln B lg ng n R A ce 3 Connections scs t IIIA IRR eere 3 Keypad System sa ee ee ee ee 4 Calibration Menu o 5 Totalizer 6 Signal Strength eo riera cada ar Hee aes 6 Relay Status Display pa dos pe cir e ae pola orah ia 7 Password 4 Q 5 7 Units Mode corr 7 Calibration 8 4 20mA Current Loop A A RA Q 9 Relay Parameters occ o RR RA ee I eee 9 Special Functions ccc cc t RR RI I RII A III eee 10 Reset Totalizer o o n n n n n ng Mg gg Mg ng lg ng lg 2g ng 1l 1 1 e 10 Sensor Mounting TII 11 Enclosure Installation n n n n n n n n n M eee 15 Synchroni zation cst IIR ehh 16 Backflow Rej ECON dms hor ad aca o ee d e ag 17 Error Warning Messages rr 17 Fuse Replacement APRA AAA AAA de Ue de a OR o e Oe m A un 18 Troubleshooting TT 19 Common Questions and Answers eee o co oo IRI n 22 Applications Hotline o n n n n ng n ARR IG 24 Product Return Procedure ss o n o n n n n I
22. ange the numbers and decimal point Pipe ID should be entered as the exact inside diameter of the pipe where the sensor 15 mounted Press to return the cursor to P ipe ID and Y to MaxF Set digits to the maximum flow rate in your application If maximum flow 1s unknown enter an estimated maximum and observe actual flow to determine the correct maximum value aF entry is required only to set 20mA output at a specific flow rate and maximum flow in the optional data logger MaF setting has no effect on the DFM IV digital display totalizer or control relays 4 20mA CURRENT LOOP Some applications may require the 4 20mA output to be offset so that 4mA or 20mA correspond to flow rates other than Zero and Maximum 4m at use Y or to set output for 4mA It is adjustable from 5 3 8mA up to 15 lower than the 20mA setting Adjustment resolution 15 0 05 0 01mA Am at use Y or to set output for 20mA down to 15 greater than the 4mA setting and up to 300 Adjustment resolution 1s 0 05 0 01mA DAMPING Increase damping to stabilize readings under turbulent flow conditions Damping time shown in percentage 15 the interval for a zero to full scale display change maximum 99 percent Factory default 15 20 percent Page 8 Gr S yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 RELAY PARAMETERS CAL TBRAT TOM RELAY PARAMETERS RELAY PARAMETERS Rion 108 43 Rion i Fior 8 86
23. convert from volume to velocity units FUSE REPLACEMENT 1 Turn OFF power 2 Loosen 2 Phillips corner screws and remove power module from the chassis 3 Locate fuse on Power Board 4 Replace fuse with 2 Amp 250V 5 x 20mm fuse 5 Reinstall power module the chassis CONDICIO x Z REMOVE REMOVE POWER MODULE Page 18 Greyling DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 FIELD TROUBLESHOOTING Possible Causes Corrective Action METER READING LOWER THAN EXPECTED Calibration Error e Review UMITS MODE menu and Fipe Lower flow rate than expected e Investigate pump valves Compare velocity with alternate instrument Signal not penetrating far enough into the flow stream e Increase sensitivity e Relocate sensor closer to elbows or flow disturbances Laminar flow condition or high solids bubbles content in liquid e Remount Sensor at 12 o clock position on horizontal pipe Improper mounting of sensor e Reinstall Sensor with careful application of Coupling Compound Pipe is not full e Remount Sensor on vertical pipe METER READING WHEN THERE IS NO FLOW Vibration on pipe e Install in another location Local electrical noise e Ensure all Flowmeter wiring is in METAL conduit and sensor shield is properly grounded e Ensure correct power input Ground connection lt 1 ohm resistance e Ensure 4 20mA
24. d in accordance with the requirements of the National Electrical Code System grounding 1s provided by connecting grounding wires from all conduit entries to the steel mounting plate or another point which provides continuity Page 15 Gr S yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 SYNCHRONIZATION Synchronization may be required to prevent interference readings with no flow or cross talk in applications where more than one DFM IV Doppler sensor is used in close proximity Synchronize DFM IV flow meters if sensors from separate DFM IV flow meters are mounted on the same pipe extended sensor cables from separate DFM IV flow meters are run in the same conduit To synchronize two or more DFM IV flow meters 1 Choose one DFM IV as a MASTER Go to the SPECIAL FUNCTIONS menu select Haster and Stores 2 All other DFM IV s must be SLAVES Go to the SPEC IAL FUNCTIONS menu select 5 1 and stores 3 Connect SYNC of the Master unit to SYNC of the first Slave Connect SYNC of the first Slave to SYNC of the second Slave and so on Ensure that all units have a common Ground by wiring all GND terminals together as illustrated MASTER SLAVE SLAVE TMTR SYNC TMTR SYNC TMTR SYNC am xd WARNING Only one DFM IV
25. ed Use only Greyline shielded coaxial pair RG174U cable Extended sensor cable should be installed in conduit for mechanical protection Recommended installation with a metal junction box Option DJB 16 illustrated below TERMINAL BLOCK CORE 0 0 m SENSOR CABLE 20 ft 6m SHIELDED COAXIAL PAIR EXTENDED SENSOR CABLE TO ELECTRONICS ENCLOSURE CONDUIT BY CUSTOMER Required For Mechanical Protection MAX LENGTH 500 ft 152m GREYLINE SHIELDED COAXIAL PAIR SENSOR 2 DIG DO GREEN WIRES MUST BE CONNECTED TO GND TERMINAL SENSOR CABLE JUNCTION BOX OPTION DJB Optional Watertight steel NEMA4 Junction Boxes with terminal strips are available from Greyline Instruments DIMENSIONS OPTION DJB JUNCTION BOX 5 5 140mm ee 2 86 SIDE VIEW 73mm 3 31 28mm TOP VIEW 84mm Mounting 5 127 27 Gr SL M 2 DFM IV Doppler Flow Meter En inc Manual Series A 6 SENSOR INTRINSIC SAFETY OPTION 2ISB When connected through INTRINSIC SAFETY BARRIER Intrinsic Safety Barriers the aS Greyline Sensor Model 5 15 ac ib CSA certified for Installation In a hazardous location rated Greyline _ inslrumenls inc RCVR Class I Groups C D Class II Groups E F G Class
26. ents 1s recommended for semi permanent installations Page 13 Er yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 SENSOR MOUNTING COUPLING RECOMMENDATIONS BAD GOOD Page 14 Gr 8 yl A 2 DFM IV Doppler Flow Meter insirumenis inc Manual Series A 6 ENCLOSURE INSTALLATION Locate the enclosure within 20 ft 6 m of the sensor 500 ft 150 m optional The enclosure can be wall mounted with the four mounting screws included or panel mounted with Option PM Panel Mount kit from Greyline Instruments Avoid mounting the enclosure in direct sunlight to protect the electronics from damage due to overheating and condensate In high humidity atmospheres or where temperatures fall below freezing Option TH Enclosure Heater and Thermostat 1s recommended NEMAAX IP66 WITH CLEAR COVER 1 Open hinged enclosure cover 2 Insert 8 screws supplied through the four enclosure mounting holes to secure the enclosure to the wall or mounting stand ENCLOSURE MOUNTING HOLES N ENCLOSURE Additional conduit holes can be cut in the bottom of the enclosure when required Use a hole saw or Greenlee type hole cutter to cut the required holes DO NOT make conduit wiring entries into the top of the enclosure END VIEW Note This non metallic enclosure does not automatically provide grounding between conduit connections Grounding must be provided as part of the installation Groun
27. equencies are far lower than the sonic frequencies used by the Greyline flow meter and will not normally affect accuracy or performance However applications where very weak Doppler signal is present when sensitivity is adjusted to maximum and signal strength 1s low accuracy may be affected by pipe vibration or the flow meter may show readings under no flow conditions Attempt to relocate the sensor on a pipe section where vibration 1s reduced or arrange pipe mounting brackets to reduce vibration at the sensor mounting location The flow meter must be installed in a high noise environment Will this affect operation Greyline flow meters are designed to discriminate between environmental noise and the Doppler signal High noise environments may affect the flow meter s performance where low signal strength and or low flow velocities are being measured If adjustment of the flow meter sensitivity does not eliminate noise interference a non acoustic flow meter should be considered for the application Will pipe corrosion affect accuracy of the flow meter Yes Rust loose paint etc must be removed from the outside of the pipe to provide a clean mounting position when installing a Doppler sensor Severe corrosion oxidation on the inside of the pipe may prevent the Doppler signal from penetrating into the flow If the pipe cannot be cleaned a spool piece PVC recommended should be installed for sensor mounting What effect do pipe liners have on t
28. f a turn Do not use above 100 psi PVC HIGH TEMPERATURE SENSOR OPTION SE3H 3 4 OD 19 mm Mount with coupling compound and stainless steel pipe clamp supplied Protect Sensor cable from contact with hot pipes 20 6 m STANDARD k OVERALL LENGTH 13 330 mm pla gt 5 15 OPTIONAL TH 5 16 8 mm OD 1 575 SENSOR E mmm hc SD 55 mm TOF VIEW CE 2 25 57 mm 1 00 SENSOR E 25 4 mm SIDE VIEW L HIGH TEMPERATURE SENSOR MODEL SESH STAINLESS STEEL SE3H Specifications Operating Temperature 40 to 302 F 40 to 150 C Minimum Pipe Diameter 0 5 12 5 mm ID 0 6 15 mm OD Maximum Pipe Diameter 180 4 5 m O D Operating Frequency 640 KHz Exposed Materials stainless steel with epoxy face Sensor Cable 20 ft 6 RG174U shielded coaxial pair Page 31 Gr S yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 Data Logger Menu Optional EL STOF Setup sessionNo 1 Formatted Trend StartJan Bi PBB Hi lm Lo ir Interwal Interuals s Interwal 1 Min STOR IMG Page 32 Gr 8 yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 DATA LOGGING Optional Setup From RUM S TOP SETUF p
29. h Relay MM 3 4 Reverse character indicates that the Relay is On energized 24 HR LOG DFM IV Flow Meters with optional Data Logger will display this menu Refer to OPTIONS section PASSWORD The password a number from amp to 2 prevents unauthorized access to the CAL TBRAT TOM menu rm ssi dm s From EUH press to get to FASSHORT BE Press to place the cursor under the digit and Y f to enter your password O Factory default Password 15 nee E de A new password can be stored by going to SPECIAL FUNCTIONS and Y to Meu Password UNITS MODE PASSHORD UNITS MODE CAL TBRAT IDH Hee STOR IMG Use to get to UNITS MODE then Y to get to Linear Units Use to move the cursor under the required units Use Y to get to Volume Units and then select units of Time and F l ou or We loc ity 1 mode displays flow rate engineering units e g gpm litres sec etc we loc itu mode displays flow velocity in units time e g ft sec or m sec When all units have been selected go to Stare then to tes and Y or ft to CALIBRATION Page 7 Gr S yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 CALIBRATION UNITS MODE CALIBRAT ION RELAY PARAMETERS Pipe 1 888 Ft 16 86 Hee OS IMG From CAL IERAT ION press Y to Pipe and to place the cursor under the digits and Y or ft to ch
30. he flow meter The air gap between loose insertion liners and the pipe wall prevent the Doppler signal from entering the flow Better results can be expected with bonded liners such as cement epoxy or tar however an on site test is recommended to determine if the application 1s suitable for a Doppler flow meter Why is Doppler only recommended for liquids containing suspended solids or gases The Doppler sensor transmits sound into the flow stream which must be reflected back to the sensor to indicate flow velocity Gas bubbles or suspended solids act as reflectors for the Doppler signal As a guideline Greyline Doppler flow meters are recommended for liquids containing solids or bubbles with a minimum size of 100 microns and a minimum concentration of 75 ppm Most applications except potable distilled or deionized water will meet this minimum requirement Can the sensor be submerged in water Yes for short periods of time or by accident but not for continuous operation The sensor is constructed to withstand submersion to 10 psi without damage but external liquid moving in contact with the sensor can be interpreted as flow and cause false readings Page 22 Gr 8 yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 What is the purpose of the Signal Strength Display and Sensitivity adjustment Doppler signals of low strength left of the X on the 55 signal strength display are not accepted or processed by the inst
31. l frequency reference 100 130VAC 50 60 Hz 7 2 W max Optional 200 260VAC 50 60 Hz 7 2 W max Optional 12VDC or 24VDC 6 5 W max 120VAC 0 06 amps 7 2 W 240VAC 0 03 amps 7 2 W 24VDC 0 27 amps 6 5 W 12VDC 0 54 amps 6 5 W Relays Off reduces by 1 W 4 20mA disconnected reduces by 0 5 W Isolated 4 20mA 1000 ohm load max Qty 3 rated 5 amp SPDT programmable flow alarm and or proportional pulse forces display and outputs to zero with contact closure from remote relay watertight dust tight NEMA4X IP66 fiberglass with a clear shatter proof face 10 to 140 F 23 to 60 C adjustable Damping adjustable Sensor 4 20mA output and AC power input 0 5 12 5 mm ID 0 6 15 mm OD 180 4 5 m ID 40 to 200 F 40 to 93 C 640 KHz Stainless Steel with Epoxy face 20 ft 6 m shielded coaxial pair RG174U Optional 50 ft 15 m continuous Withstands accidental submersion pressure up to 10 psi 0 7 Bar Rated for sensor and cable installation in Class I Div 111 Groups C D E F G Hazardous locations with optional Intrinsic Safety Barriers END VIEW SIDE VIEW T 1 25 31 75 mm gt lt 2 25 57 20 5 DOPPLER SENSOR Page 39 Gr S yl A DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 APPENDIX B CONVERSION TABLE CONVERSION GUIDE FROM MULTIPLY BY D S S S S US GALLONS 0 1337 US GALLONS 0 8327
32. ne or phone the Applications Hotline below United States Tel 315 788 9500 Fax 315 764 0419 Canada Tel 613 938 8956 Fax 613 938 4857 Toll Free 888 473 9546 Email info greyline com Web Site www greyline com Greyline Instruments Inc Canada USA 16456 Sixsmith Drive 407 County Route 46 Long Sault Ont KOC 1P0 Massena NY 13662 PRODUCT RETURN PROCEDURE Instruments may be returned to Greyline for service or warranty repair Before shipping a product to the factory please contact Greyline by telephone or Fax to obtain an RMA number Returned Merchandise Authorization This ensures fast service and correct billing or credit When you contact Greyline please have the following information available Model number Software Version Serial number Date of Purchase Reason for return description of fault or modification required Your name company name address phone and fax number After obtaining an RMA number please ship the product to the appropriate address below Canadian and International USA Customers Customers Greyline Instruments Inc Greyline Instruments Inc 16456 Sixsmith Drive 407 County Route 46 Long Sault Ont KOC IPO Massena NY 13662 RMA RMA Page 24 GP S yl A DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 FLOW METER DATA SHEET Greyline Instruments Inc Please complete and return this form to Greyline It is 16456 Sixsmith Dr Long Sault On
33. ngths up to 4000 ft 1220 m Format 8 Bits 1 Stop Bit No Parity Baud rate may be changed under the SPEC IAL FUNCT IONS menu Factory default is 19200 baud Use shielded 4 conductor cable Greyline cable option SC 18AWG recommended Connect the cable shield to Ground at the DFM IV electronics enclosure and do not connect to Ground at the other end RS232 485 Converter RS232 Cable Option 485 9 12 Option DB9M DB9F RX RS485 4000 ft 1220 m Tx Option SC 18AWG 18AWG 4 conductor shielded PU x Detail N RX PU GND TX RS485 di DB9F Greyline Transmitter with RS485 Output 6ft 2m 7742777 27 ALLL LLJ LLLI ILAA AAAI fay 27 as Sp ap ar LIL ZZ 27 E Configure the Greyline software program for RS485 communications Under the Communications Connection Setup menu select Connected to a Greyline 48501 12V adaptor 4850I9TB 12V RS232 RS485 Converter A Use with optional RS485 output for connection to a PC computer or modem 9 95 NS 9159 0 ye 9 Q gy Optically isolates and protects your computer s RS232 port Terminal block for RS485 connections Operates from 2400 up to19 2K baud DB9M DB9F R
34. ould prove defective within the first year return it freight prepaid to Greyline Instruments along with a copy of your invoice This warranty does not cover damages due to improper installation or handling acts of nature or unauthorized service Modifications to or tampering with any part shall void this warranty This warranty does not cover any equipment used in connection with the product or consequential damages due to a defect in the product All implied warranties are limited to the duration of this warranty This is the complete warranty by Greyline and no other warranty is valid against Greyline Some states do not allow limitations on how long an implied warranty lasts or limitation of incidental or consequential damages so the above limitations or exclusions may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state Greyline Instruments Inc Page 26 Gr 8 yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 APPENDIX A OPTIONS EXTRA SENSOR CABLE OPTION DXC Each Greyline flow meter includes 20 ft 6m or 50 ft 15 m optional continuous shielded coaxial pair cable Additional cable and Cable Junction Box Option DJB may be ordered with the Flow Meter or the cable may be spliced and extended up to 500 ft 152m as required during installation No adjustment 1s required when the sensor cable 1s extended or shorten
35. ow Meter inslrumenls inc Manual Series A 6 RUN PASSMHORTD A scrolling display shows the units selected from the units selection column the mode of operation VELOCITY or FLOW the full scale value for the large numeric display and the TOTALIZER value TOTALIZER From use Y key to display the totalizer value The Totalizer value 1s updated every 2 seconds with flow volume gt 1 litre 0 264 USG The Totalizer display will show up to 10 digits and then overflows to 0 automatically Units ft USG IG L Units m Press f key to return to RUH SIGNAL STRENGTH SS z O F From TOTAL IZER use Y key to get to Signal Strength Sensitivity Current Minimum Ideal Signal Strength Marker Marker Arrow Press 9 to position the cursor under the numeral Use or Y to increase or decrease signal strength Minimum setting 15 1 SS 54 Maximum setting 15 9 Signal strength should be adjusted so that the Signal Strength Arrow meets the Ideal Marker under normal flow conditions SS Signal strength must pass the Minimum Marker for the flow meter to display flow SS It is normal for Signal Strength to fluctuate and rise to full scale under high flow conditions SS Page 6 Gr S yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 Relays 1 2 3 Relay Status Display Displays state of eac
36. p function In WrapAround mode the o dest data will be overwritten by the newest If WrapAround 15 not enabled the logger will stop when its memory becomes full Page 33 Er yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 Press Y to Reset Loa Yes Press 9 to and then Y to reset the Log and erase all previous sessions and stored values Or press Y from Reset Loa to retain existing data in the Log The DFM IV will display sexes Hes Daus Left From the Herz Left display press Y to Store vez Press to and then Y to save your Data Logging setup or press amp from Store to cancel changes made above and exit without storing changes From the Data Logging Store Yes prompt the menu will return to RUM STOP SETUP Press 9 to position the cursor under and press Y to activate the Data Logger to start at your selected start Date and Time The DFM IV will display SESS IO MO Press Y to return to DATA LOGGING Viewing FORMATTED Data Logs on the DFM IV Display 24 Hour Formatted logs can be viewed directly on DFM IV display From RUH press 9 to 24 This function is available only if 24 Hour Formatted logging has been Stored from the DATA LOGGING menu The 24 Hour Log Report is designed to be read one line at time using the key Using the Y or keys will return the display to the Date column I IM FLO TIME Ew TOUS DATE EN TOUS DATE EN TOUS DA
37. ress to SE TLIF and then Y Site ID Press to position the cursor under the numeral and Y or to change the numerals The Site ID number is retained with data logging sessions to identify logs stored from different locations Formatted Data Press Y from Low Site ID and press Y from Formatted F armat tec data stores a summary of flow readings over a user selectable time period The summary includes DATE and TIME Interval TOTAL Interval AVERAGE Interval MAX FLOW Interval MAX FLOW TIME Interval MIN FLOW Interval MIN FLOW TIME From F arma ttec press Y to Start DD v eg Jan Bd Z006 Press 9 to position the cursor and then Y or to set the Month Day and Year that logging will Start Press m to return to Start Press Y to Start time and to position the cursor under the time column 55 24 hour clock in Hours minutes seconds eg 23 62 16 and then or ft to set the logging start Time Press to return to Start Press Y to Inter a 1 9 to the Hz column Press Y or to select the flow logging interval Choose from 24 Hes or iz Hes or S Hee or 4 Hres or 1 Hrs Press to return to Interwal Press Y and the DFM IV will report Hes Left indicating the amount of logging time available with your current set up You can also press ft to return to previous menu items and make changes Press Y to HrarAroungd tess Press 9 to and Y to enable the logging wra
38. rument This feature assists 1n rejection of environmental noise and vibration For optimum noise rejection the sensitivity control should be adjusted so that signal strength 1s to the right of the on the signal strength display with flow and to the left of the with no flow Can I change the length of the sensor cable Yes Technological advances Greyline Doppler design allow cable lengths up to 500 ft 152 m with no loss of signal strength Extended cable Greyline Option XC should be installed in rigid or flexible conduit for mechanical protection Use only Greyline shielded coaxial pair RG174U cable Cable junctions should be made through a terminal block and housed in a watertight metal junction box Greyline Option JB BNC coaxial connectors TV cable type are not recommended for cable splices Does the DFM IV require periodic recalibration No DFM IV calibration does not drift over time The solid state sensor has no moving parts to wear and affect calibration The Doppler flow technique generates an ultrasonic signal proportional to the velocity of flow All Greyline timing counting circuits use crystal controlled frequency references to eliminate any drift in the processing circuitry Page 23 Er yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 APPLICATIONS HOTLINE For applications assistance advice or information on any Greyline Instrument contact your Sales Representative write to Greyli
39. t 1 0 important We use this information to check our database Tel 613 938 8956 Fax 613 938 4857 for performance of Greyline flow meters in similar 407 County Route 46 Massena NY 13662 applications and to provide advice and recommendations Tel 315 788 9500 Fax 315 764 0419 to you Thanks for your cooperation Contact Title Dept Company Project Address Tel Fax SENSOR Model Type Cable Length Elec Class Type of Pump Distance from nearest Pump Controlling Valve Orifice or open Discharge INSTRUMENT Model Type Power Input Calibrated Range Indication Operating Temp Alarm Enclosure Class Pulse Unit Elec Class Output SERVICE CONDITIONS Pipe ID O Vertical Horizontal Pipe Mat Solids Fluid Material Build up Oper Flow Vibration Max Flow Max Pressure Min Flow Max Temp Notes Sketch Pipe Run By Date Page 25 Er yl A DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 LIMITED WARRANIY Greyline Instruments warrants to the original purchaser its products to be free from defects in material and workmanship for a period of one year from date of invoice Greyline will replace or repair free of charge any Greyline product 1f it has been proven to be defective within the warranty period This warranty does not cover any expenses incurred in the removal and re installation of the product If a product manufactured by Greyline sh
40. tput will be forced to 4mA and 20mA respectively during these adjustments Master or Slave selection for synchronization of multiple DFM IV flow meters see Manual section SYNCHRONIZATION position cursor under digits set new number between and 22 Optional set the baud rate of the DFM IV RS232 output when equipped with an optional data logger Page 10 Gr 8 yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 SENSOR MOUNTING LOCATION The position of the sensor is one of the most important considerations for accurate Doppler flow measurement The same location guidelines apply to Doppler as most other types of flow meters Before permanently mounting a Doppler sensor onsite testing is recommended to determine optimum mounting position Use the sensor coupling compound supplied with each Greyline flow meter or petroleum gel acoustic compound or electrocardiograph gel Take several readings around the axis of the pipe and then at several points upstream and downstream from the selected position checking for consistent readings Avoid high or low reading areas Mount the sensor where consistent average readings were obtained or continue testing on another pipe section 12 O CLOCK POSITION WITH VERTICAL OR HORIZONTAL PIPE Vertical pipe LOW GAS CONTENT runs generally provide evenly distributed flow On Horizontal pipes and liquids with high concentrations of gas solids the sensor sho
41. uld be mounted the S side 3 or 9 o clock position to avoid concentrations errs te ua of gas at the top of the pipe or solids at the bottom For liquids with minimal gas bubbles e g potable M TO water the sensor should be mounted on the top of a HAS EVENLY DISTRIBUTED FLOW horizontal pipe 12 o clock position to obtain the best signal strength VELOCITY INCREASING DEVICES Generally the sensor must be mounted away from flow disturbances such as valves pumps orifice plates venturis or pipe inlets and discharges which tend to increase flow velocity Velocity increasing devices often cause cavitation or rapid release of gas bubbles and readings both up and downstream may show much higher velocity As a guideline mount the sensor at least 20 diameters upstream or 30 diameters downstream from velocity increasing devices Required distance from a velocity increasing device will vary in applications depending on the flow velocity and the characteristics of the liquid itself TURBULENCE INCREASING DEVICES Elbows SENSOR MOUNTS Z DIAMETERS flanged connections and tees tend to introduce UPSTREAM OR 10 DOWNSTREAM desirable conditions of an evenly distributed flow FROM AN ELBOW profile with some air or gases entrained in the flow Sensor mounting 6 pipe diameters upstream and 10 diameters downstream from these disturbances is generally optimum The sensor is designed to mount longitudinally on a straight section of
42. using ore Logger software each Session wail open as a separate graph table titled Greyline Data Log xx Important If you STORE instrument calibration changes under the UNI TS MODE or CAL IERARTOM menus STOF the data logger and select again to start a new logging Session with your new calibration values Page 36 Gr SL M 2 DFM IV Doppler Flow Meter En Inc Manual Series A 6 RS232C SERIAL OUTPUT with optional Data Logger Format 8 Bits 1 Stop Bit No Parity Baud rate may be changed under SPEC IAL FUNCTIONS menu Factory default 1s 19200 baud Output connector is DB9 Female Use the cable supplied for connection to a PC Computer Use the cable and optional Null Modem NM DB9M DB25M for connection to a modem NULL MODEM Option Public Telephone Lines INCLUDED O estes NM DB9M DB25M Mode p B LO N DB9M DB25M RS232 Greyline 20 6 cable included SM Instrument _ Computer Wm RX PU GND TX Wired as DCE Data Communication Equipment PIN 2 RX PIN 3 TX PIN 5 GND PIN 6 DSR PU PIN 8 CTS PU SHIELD CASE RS 232 PU PULL UP ZIELS J A J Page 37 Gr S yl A 2 DFM IV Doppler Flow Meter inslrumenls inc Manual Series A 6 RS485 SERIAL OUTPUT Replaces standard RS232 Output with Data Logger option Permits transfer of optional Data Logger reports on wire le
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