AFLOW MF
Contents
1. 5 Max frequency 200 Hz 1600 Hz 200 HZ 6 Alarm frequency 0 Hz OHZ o o eee eee ene 7 Active level Low Low Low Sian O O O O a a E a 10 min 9 Power supply mode Active Active for direct flow Table C 2 50 32 20 125 8 2 08 05 Table C 3 DN mm 300 Kp pis i 1 6 Table C 4 Design version Cutoff MF 420 520 L F 0 002 Qmax Table C 5 Cutoff values for various nominal diameters DN mm 20 25 32 40 50 100 150 200 300 0 002 Qmaxm h 0 027 0 042 0 070 0 109 0 170 0 679 1 528 2 716 6 112 0 001 Qmaxm h 0 014 0 021 0 035 0 054 0 085 0 340 0 764 1 358 3 056 re_er x20LF_doc3 4 trans 282. 122 7 m 1 4 3 2 The set of displayed parameters period of displaying and display cutoff value may be set at the factory on customer request or on site when putting the flowmeter into operation Period of displaying is the time for displaying a parameter that may be set from 1 to 100 s 5 s is a factory set value Alarm pipeline conditions detected by the flowmeter or flowmeter s faults are indicated by H character that is periodically displayed on a position related to specific error type The types of errors detected and corresponding positions of the marker are described in section 2 5 of this manual 1 4 3 3 General purpose outputs The flowmeter has two galvanically isolated outputs These outputs are versatile both with regard to operating mode frequency pulse or logical and function Operation modes function and settings for the outputs are config ured at the factory Configuration may be performed on site when put ting the device into operation In the pulse and frequency modes measured signal is taken from a general purpose output in the form of square pulse sequence with pe riod to pulse duration ratio of 2 and standardized pulse weight The maximum pulse repetition rate is 2000 Hz Output conversion coefficient Kp pulse l that defines the pulse weight may be set within the range from 0 0001 to 200 000 with 0 0001 increment To determine the Kp value having regard to the maximal flow rate in the
3. ELECTROMAGNETIC FLOW METER AFLOWT MF OPERATION MANUAL 4 9001 2008 Saint Petersburg Russia KKK VZLJOT JSC quality management system is certified to ISO 9001 2008 Rad KKK Vzljot JSC Postal address Masterskaya Str 9 190121 Saint Petersburg RUSSIA Tel 7 812 714 81 62 Fax 7 812 714 71 38 E mail im vzljot ru URL http www aflowt com VZLJOT JSC provides free consultation services and personnel training VZLJOT JSC TABLE OF CONTENTS INTRODUCTION a e e N aar E E Ta E E A E A E 3 1 DESCRIPTION AND OPERATION ccceeeeeeeeeeeeeeeeeeeeeeeeeeaeeeeeeeeeeeeeeeseaea 5 uf le 19 9 Tee 1d 0 9 eerie ron reeeree a a tre tenmrererecurer st erer swe a sr tru erste 5 A Specifications nne eenei aE E i d 5 1 3 Contents of the delivery PACKAGE ceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 7 1 4 DESIGN AND OPERATION eseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 8 1 4 1 Operation principle cc ceeeeeseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeaeeeeeeteesseeeseeeseeees 8 1 4 2 Operation Modes s raae a A e e ea aa aa N OENE ei 8 14 3 Displaying TES UNS nenene reen n A E a ai Oaa 9 1 4 4 Service fUNCHIONS 0 ccc cceececceeeeeeeceeee essa eeeaeeeaaeaaeeeaaeaaaeeeaesaaaesaasaaeases 12 VAS DOSIOM 2 ceh ce Ree eee bite Ue ei A oats eats ork fadeenndn 12 1 5 Marking and sealing scescesecesccorecesecwsecnsecereeesereteceserer
4. on J5 and J6 terminals which are located on the MU board see Fig A 5 Combinations of jumpers with regard to operating modes are specified in Table 3 means that the terminal contacts are closed by a jumper and means that the terminal contacts are opened Mode Terminal ipti T 76 Mode description Adjustment ADJUSTMEN 7 and calibration SERVICE sl sae a procedures OPERATION z Work In different operating modes the user can modify different device s settings The settings are reconfigurable via optional RS 232 serial in terface In the ADJUSTMENT mode all of the settings may be changed The mode is used to configure the device during manufacture and cali bration In the SERVICE mode the following settings may be configured Flow measurement cutoffs Settings and operation modes for general purpose outputs Display related settings In the OPERATION mode only the display related settings may be modified set of displayed parameters period for displaying a pa rameter measurement units and display cutoff Configuration settings that may be modified in the OPERATION and SERVICE modes have no effect on the device s metrological char acteristics and may be performed on site In the SERVICE and OP ERATION modes adjustment and calibration settings are inaccessible 1 4 3 Displaying results 1 4 3 1 Display Table 4 specifies the parameters that may be displayed on the flowme
5. pipeline where the flowmeter is installed and frequency characteristics of the input receiving the pulse signal the following for mula may be used 3 6xF 1 8x10 Q Q max x Tols where Qmax is the maximal operational flow rate in the pipeline m3 h F is the maximal flowmeter s pulse repetition rate permissible for a receiving input Hz K pulse I lt max Tpis Tpis 2 is the minimal flowmeter s pulse duration permissible for a receiving input ms Tpis is the pulse repetition period for the pulses on the flowmeter s output ms In the frequency operation mode frequency is proportional to average volumetric flow rate measured over previous 80 ms For the frequency mode in addition to the Kp Conversion coeffi cient the values for Max frequency Alarm frequency and Ac tive level parameters should be selected Max frequency is the frequency of output signal corresponding to maximal flow rate in the pipeline If the Max frequency value is ex ceeded this is identified as an alarm condition i e the value of K set for this output is incorrect Alarm frequency is the pulse repetition rate of a pulse sequence no more than 2000 Hz generated on the output if the measured flow 10 rate exceeds Qmax specified for a given flowmeter The value set for the Alarm frequency must be no less than the Maximal frequency value To disable the Alarm frequency function set 0 for the Al
6. 1 Qmax increment For a bidirectional flowmeter the cutoffs operate either for positive or for negative flow Flow direction signal is also changed ac cording to the preset cutoffs Factory set values for the cutoffs are specified in Table C 4 of Ap pendix C 1 4 5 Design Design of the flow sensor depends on pipe connection type and may be as follows Wafer connection type DN20 DN150 the FS is fixed by studs between the flanges welded to the pipeline ends Flanged type DN20 DN300 the FS s flanges are fixed to the mating flanges of the pipeline by bolts 12 Design type of the FS is indicated in the design version name by the following letters L wafer pipe connection type F flanged type For MF 420 520 L flowmeters flow tubes of DN20 DN50 nominal sizes are all polymeric and DN100 DN150 flow tubes have fluoroplastic liner inside To protect projecting part of fluoroplastic liner from damages during mounting and operation flow sensors designed for wafer pipe connec tion type are equipped with protection rings For MF 420 520 F flowmeters flow tubes of all standard sizes are lined with fluoroplastic Flow sensors for DN20 DN150 sized MF 420 520 L flowmeters are manufactured in a polymeric case with a stand The case consists of the halves fixed together by 4 screws Flow sensors for DN100 DN150 nominal sizes come in a one piece metal case with a stand Flow sen sors for flanged MF 420 520 F flowmeters come
7. 5 3 5 and 4 0 hH1 m wat col 2 3 4 5 6 7 8 9 10 11 12v2 m s Fig 3a Fig 3b 1 2 3 4 5 6 7 8 9 10 11 12 v2 m s Fig 3c Fig 3 Graphs of hydraulic losses in confusor a straight pipe run b and diffusor c 17 1000 500 200 100 50 20 10 5 0 2 0 1 0 0 5 0 2 0 1 0 05 0 02 0 01 m h i m DN150__ _ _ DN80 cH E 0 1 0 2 0 3 0 5 0 7 1 0 2 0 3 0 5 0 7 0 9 0 12 0 m s Fig 4 Graph of flow rate vs flow velocity for various DNs 2 3 Preparing for operation 2 3 1 Safety instructions 2 3 1 1 The flowmeter should only be used by personnel familiar with all opera tional documentation for the product 2 3 1 2 When working with the flowmeter the dangerous factors are as follows AC voltage RMS value up to 264 V frequency 50 Hz Pipeline pressure up to 2 5 MPa Medium temperature up to 150 C Other site specific factors 2 3 1 3 Do not use the flowmeter in the pipelines with pressure exceeding 2 5 MPa 2 3 1 4 In the course of mounting putting into operation or repair works you must not Make electrical connections to the flowmeter or switch over modes when the flowmeter is powered up Remove the EFM from the pipeline until pressure in the pipeline section worked on is fully released 2 3 2 Preparing for operation When putting the flowmeter into operation check the follow
8. TIC FLOW METER T O V Wy o o eo _ ____ mh Temperature class T90 MAP 1 6MPa Power supply 24VDC CE _ reference dimension 1 Display if applicable 2 Measuring Unit 3 Flow Sensor 4 Protection rings 5 Signal cable gland 6 Power cable gland 7 Wires for connection between the EFM case and pipeline 8 Electrodes Weight no more than Fig A 2 View of the MF 420 520 L flowmeter DN100 DN150 nominal sizes flow tube with fluoroplastic liner 23 AFLQUUT MF MAGNETIC FLOW METER reference dimension 1 Display if applicable 2 Measuring Unit 3 Flow Sensor 4 Signal cable gland 5 Power cable gland 6 Wires for connection between the EFM case and pipeline 7 Electrodes Weight no DN mm D mm D1 mm L mm H mm more than k 20 50 105 150 212 3 8 25 58 115 150 217 4 1 32 66 135 194 233 5 8 40 75 145 194 241 7 0 50 87 160 195 255 8 9 100 149 230 244 320 20 0 150 202 300 316 384 36 4 Fig A 3 View of the MF 420 520 F flowmeter DN20 DN150 nominal sizes flow tube with fluoroplastic liner 24 reference dimension 1 Display if applicable 2 Measuring Unit 3 Flow Sensor 4 Protec tion rings 5 Signal cable gland 6 Power cable gland 7 Wires for con nection between the EFM case and pipeline 8 Electro
9. arm frequency pa rameter Active level is the signal level Low or High related to the presence of a pulse The electrical parameters for signal level are specified in Appendix B Q absolute value of flow Q Direct flow and Q Reverse flow are the parameters that define function of the output in the fre quency mode If Q absolute value of flow is activated a pulse sequence with pulse repetition rate proportional to the measured flow rate is generated on the output regardless of flow direction Selection of Q Direct flow setting means that the pulse sequence is only generated for for ward flow active Q Reverse flow setting means that the pulse se quence is only generated for reverse flow If the pulse mode with 1s period is set a burst of pulses generated on the output contains the number of pulses considering pulse weight re lated to the flow volume measured over a previous second For the pulse mode parameters to be configured are Conversion coefficient Pulse period and Active level Pulse period is the pulse repetition period in a burst It may be set from 1 to 255 ms which relates to pulse repetition rate from 1000 to 4 Hz y V and V are the parameters that define function of the output in the pulse mode If V is activated pulses the number of which is proportional to the measured volume are generated o
10. des Weight no more than Fig A 4 View of the MF 420 520 F flowmeter DN200 DN300 nominal sizes flow tube with fluoroplastic liner 25 15 coooaoooo aly J 6 0000 ooo 0 2 DIR DIR TSOUT XP1 connector for display flexible flat cable or RS 232 adaptor cable XS1 DC 24 V power supply connector XT2 general purpose output N1 terminal block XT2 general purpose output N2 terminal block J1 J3 terminals used to set operation modes for general purpose output N1 J2 J4 terminals used to set operation modes for general purpose output N2 J5 terminal used to enable modification of calibration settings J6 terminal used to enable modification of service settings XP2 XT1 XT5 service terminal blocks Fig A 5 View of the Measuring Unit board 26 APPENDIX B General purpose outputs circuit diagram of out put stages Output stages of the general purpose outputs have the same circuit design outlined in Fig B 1 Terminals pins and signals for N2 general purpose output are specified in brackets 5V 1 kOhm J3 J4 XT2 1 TSOUT XT3 1 DIR XT2 2 TSOUT J1 J2 XT 3 2 DIR l Fig B 1 General purpose outputs circuit diagram of output stages For the Active level High setting pulse state in the fre quency and pulse modes or event state in the logic mode corresponds to the open switch No pulse and No event states correspond to the clo
11. e values are determined without regard for time lag for either direct or reverse flow To match the outputs to inputs of different types the output stage of a general purpose output may be powered either from the internal power source active mode or external power source passive mode Circuit diagram of the output stage and description of its operation modes are given in Appendix B Cable length for the general purpose outputs operating in the pulse and frequency modes shall be up to 300 m Factory set configuration settings are listed in Appendix C If you require to change the settings specify the new values in the purchase order The configuration settings may be modified on site from AFLOWT MF program via RS 232 adaptor Connection of the adaptor is de scribed in the Installation manual 1 4 4 Service functions The flowmeter enables you to set thresholds for suppressing flowrate measurement Rising Falling and Display cutoff Qmax Rising and Falling cutoffs are the flowrate thresholds below which on increasing or decreasing the flowrate value respectively the device stops to totalize volume and output pulses All flowrates are dis played as zeroes Display cutoff Qmax is the flowrate threshold below which the flowrate value is displayed as zero however the device continues to totalize volume and output pulses Values for all cutoffs may be set from 0 to 0 255 Qmax in 0 00
12. ed access during operation 14 2 OPERATION 2 1 Operating restrictions 2 1 1 Environmental operating conditions are in conformity with Environ mental class B C 2 1 2 The flowmeter may be mounted into the pipeline installed horizontally vertically or obliquely Special filters or dirt traps are not needed 2 1 3 For precision and reliable operation when choosing the FS mounting location consider the following conditions Air collection in the mounting location must be prevented Liquid pressure in the pipeline must not be of values that may facilitate gas release Straight pipe runs of appropriate length and nominal diameter equal to the nominal diameter of the EFM should be provided upstream and downstream the EFM The runs must not include devices or compo nents that may disturb flow structure When the flowmeter is operated the flow tube must be fully filled with liquid Intensity of external magnetic field commercial frequency should not exceed 40 A m CAUTION DO NOT touch the electrodes in the flow sensor s inner channel at any step of working with the flowmeter Mounting considerations as well as mounting and dismounting in structions are given in AFLOWT MF Electromagnetic Flowmeter In stallation instruction document For the FS with protection rings removed DO NOT remove the tightening stud bolt and clamping plates for more than 10 minutes 2 1 4 Type and composition of medium Susp
13. ensions and their concentration impurity substances etc and pipeline conditions must not lead to sediments affecting performance and metrological characteristics of the flowmeter To provide proper operation of the flowmeters in pipelines equipped with carbon filters it is necessary to keep the filters in good condition 2 1 5 If needed the mounting location is provided with grounding system and lightning protection system 2 1 6 The requirements for mounting location and operating conditions speci fied in this manual are based on the most typical external factors affect ing flowmeter s performance The external factors that cannot be foreseen evaluated or tested by the manufacturer may exist or appear on site In this case it is necessary to eliminate these factors or place the flowmeter in other location 15 2 2 Selecting nominal size 2 2 1 Flowmeter s nominal size is selected on the basis of flow rate range in the pipeline where the flowmeter is installed If several sizes are suit able the nominal size is selected from the specified limit of pressure losses 2 2 2 If the selected flowmeter s nominal diameter DN is less than the nominal diameter of the pipeline use pipe reducers confusors and dif fusors 2 2 3 To evaluate hydraulic losses in the lt confusor FS diffusor gt system use the method represented in the Fig 2 2 2 3 1 The following initial values are used to evaluate hydraulic losses
14. epeseceueeescerepesereuecest 14 2 ORERA TION vaea a a e E e a i a 15 2l Operating PESICHONS scent cceddentdced tend cndcantdvnddendcunddentdunddentcueddeutduaddenbeeuce 15 2 2 Selecting nominal size 2 2 2214 s ccsse ects eect eee 16 2 3 Preparing for operation jacccgacrgsccahessnecgacetnce ctouaaseaesa ance denauoueaevteceedeebsenaae 18 2 As Operation 2 dca dcaahsnabaeaaieansGiaeead Ronee eae aeeans ones eae 19 2 0 HOUBIOSHOOUNG icone e e let ieaie 19 3 MAINTENANCG Enen aaaea E esate 20 4 STORAGE AND TRANSPORTATION ceceeeeeeeeeeeeeeeeeeeeeeeeesaeenseeeeeseees 21 APPENDIX A View of the flowmeters ccccccccccceeeeeeeeeeeeeeeeeeeesseeeeeeeeeeeeees 22 APPENDIX B General purpose outputs circuit diagram of output stages 27 APPENDIX C Factory configuration settings cc ceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 28 This document describes design and operation of AFLOWT MF electromagnetic flowmeter hereinafter referred to as the flowmeter of MF 420 520 L and MF 420 520 F versions LIST OF ABBREVIATIONS DN Nominal Diameter MU Measuring Unit FS Flow Sensor EFM Electromagnetic Flowmeter 1 DESCRIPTION AND OPERATION 1 1 Application AFLOWT MF is an electromagnetic flowmeter designed to measure average volumetric flow rate and volume of hot and cold water as well as other electrically conductive liquids in wide temperature and viscosity ranges AFLOWT MF flowm
15. error during measuring 5 Value of K on the output N2 not correct for flow direction mode 6 Value of K on the output N1 not correct for frequency or pulse mode 7 Single error during measuring 2 5 2 If H is displayed in positions 1 or 2 the flowmeter shall be forwarded for repair 2 5 3 If H is displayed in other positions and or in case of no pulses on a general purpose output check the following Power supply voltage comes from the secondary power source and conforms to the specifications The power cable is reliably connected Liquid is present and moves in the pipeline Air is not collected in the place where the flowmeter is installed The K and cutoff values are correctly set change if necessary If all the requirements listed above are met contact the service centre regional dealer or manufacturer for the information about the device s operability 19 3 MAINTENANCE 3 1 It is recommended to check on regular basis that Flowmeter s performance complies with the specifications Operating conditions are met Power supply voltage is present No external defects are detected Electrical and mechanical parts are reliably connected Check periods depend on operating conditions but should not ex ceed two weeks 3 2 If operating conditions specified in Environmental class B C are not ob 3 3 3 4 served this may lead to the flowmeter s fault or the permissible limits of relat
16. eter designed for power industry municipal en gineering and many other applications is mainly used as part of heat metering systems measuring and monitoring systems and automatic process control systems The flowmeter may be tailored to measure characteristics of re verse flow including output of flow direction sign according to the needs of a certain customer 1 2 Specifications 1 2 1 Specifications are listed in Table 1 Table 1 Parameter Value 2 Maximal measured average volumetric flow rate Qmax 10 16 25 40 63 250 630 1000 2500 m h 3 Minimal measured aver age volumetric flow rate Qmax 160 Onin m h 4 Pipeline pressure MPa no more than 2 5 Specifi ductivity of me f 5 set oe uctivity of me soesto 5 107 6 Temperature of medium C from 0 1 to 90 7 Power supply voltage V 24 see section 1 2 3 no more than 2 0 MF 420L F versions no more than 2 5 MF 520L F versions 9 Mean time to failure h 75 000 10 Mean life time years 12 8 Power consumption W 1 2 2 Accuracy class 2 Limits of permissible relative error for recording time of totalizer operation are within 0 1 1 2 3 The flowmeter is powered from a stabilized 18 25 V DC voltage source with pulse level of no more than 1 0 1 2 4 The flowmeter relates to Environmental class B C 1 2 5 View overall dimensions and weight are given in Appendix A 1 3 Contents of the delivery package Items of the delivery
17. in a metal case with a stand regardless of nominal size The measuring unit has a polymeric case fixed to the hollow stand of the FS It is possible to turn the MU about stand axis by 90 or 180 factory installed on customer s request The power supply cable and two signal cables are entered into the case through two cable glands of standard Pg7 size If necessary for convenience of reading the MU display the MU front panel may be set on the unit at an angle of 90 or 180 To do this unscrew four fixing screws and place the panel in the desired posi tion disconnection of the flexible flat cable is not required The screw on the MU case is used as a grounding terminal The wires for connection with the pipeline mating flanges are fastened to the screw 13 1 5 Marking and sealing 1 5 1 The front panel of the Measuring Unit bears Name and identifier Manufacturer s trademark Sign of the Type Approval Certificate Design version DN Power supply voltage The serial number is indicated on the nameplate located on the MU case The power cable through is marked as 24 V 1 5 2 The terminal used to enable modification of calibration settings may be sealed after calibration 1 5 3 The terminal used to enable modification of service settings may be sealed after completion of start up procedures In addition the cover of the measuring unit may be sealed to pro tect the device from unauthoriz
18. ing Flow is in the direction of the arrow located on the flowmeter s body Inlet and outlet straight pipe runs correspond in length The flowmeter and related equipment are connected in accordance with the selected wiring diagram Operation modes and configuration settings of the flowmeter s outputs are correctly set and match the parameters of corresponding inputs Power supply voltage corresponds to the specifications 18 At the first power up or after a long break in operation the flow meter becomes operational after All hydraulic processes in the pipeline related to changing flow rate draining filling flow adjustment etc are fully completed The FS is washed by medium for 30 minutes The flowmeter is kept powered for 30 minutes 2 4 Operation After putting into operation the flowmeter works in the automatic mode Measurement results are shown on the flowmeter s display if applicable In addition measurement results and configuration settings may be read via RS 232 serial interface with use of the optional RS 232 adap tor 2 5 Troubleshooting 2 5 1 The list of possible faults and alarm conditions detected by the flow meter and indicated by H character is given in Table 5 Position num ber of H character is read from left to right Table 5 Position Explanation Notes number 1 Device not initialized 2 Measuring equipment failure 3 Flow rate exceeds Qmax 4 Repeated
19. ive measurement error may be impaired External defects may also lead to deterioration in measurement ac curacy Therefore when external defects of the flowmeter power cable or signal cable are detected contact the Service Center or regional dealer for the information about the device s operability During device s lifecycle it is necessary to check the inside of the flow sensor s flow tube for dirt or and sediment no less than twice a year Slight layer of reddish sediment is permissible The sediment shall be removed with a clean soft dump cloth If dirt and or sediment of other type or in considerable amount is detected it is necessary to clean the surface of the FS and send the flowmeter for unscheduled calibration In this case it is recommended to clean the flow sensor immedi ately after removing it from the pipeline with a clean cloth moistured in water and non abrasive detergent Before dispatching the flowmeter for calibration or repair after dis mounting clean the inside of the flow tube from sediment and liquid residues The flowmeter is mounted and dismounted according to the instruc tions specified in the Installation manual for the flowmeter of a given design version Please specify post details phone fax numbers along with the way and address for redispatching in the documents forwarded to the manu facturer along with the flowmeter 20 4 STORAGE AND TRANSPORTATION 4 1 The flowmeter should be kept i
20. liquid volumetric flow rate in the pipeline Q m h DN of the inlet pipeline D1 mm DN of the FS D2 mm DN of the outlet pipeline D3 mm confusor taper angle a1 deg diffusor taper angle a3 deg length of the straight pipe run mm 1 2 ie aoa 3 2 4 1 confusor 2 full bore ball valve 3 EFM 4 diffusor Fig 2 Pipeline with the flowmeter installed 2 2 3 2 Pressure losses h in the lt confusor FS diffusor gt system are the sum of pressure losses in the confusor hm losses in the straight pipe run length hy2 and losses in the diffusor hys Hydraulic losses in the confusor are determined according to graph Fig 3a where v2 is the flow velocity in the straight pipe run The graph of hydraulic losses as a function of flow velocity is calculated for confu sor taper angle a 20 To determine flow velocity by volumetric flow rate Q use the graph in Fig 4 or the formula y mis 2 cag 0 97 x DN mm 16 Graph 3b is used to determine hydraulic losses in the straight pipe run The graph of the hydraulic losses as a function of flow velocity cor responds to straight pipe run legnth to diameter ratio 15 20 25 and 30 Hydraulic losses in the diffusor are determined according to graph 3b The Graph of hydraulic losses as a function of flow velocity is calcu lated for diffusor taper angle a3 20 and corresponds to diffusor s maximal to minimal diameter 2 0 2
21. n the manufacturer s box in a dry heated storeroom The storeroom should be free from current conductive dust acid or alkali fumes and aggressive gases During storage the flowmeter does not require any special mainte nance 4 2 The flowmeters can be transported by road rail sea or air provided that the following requirements are met The flowmeter is transported packed in the manufacturer s box Protection against moisture is provided Temperature is within the range of 30 to 50 C Humidity does not exceed 98 at 35 C Vibration is within the range of 10 500 Hz with maximum 0 35 mm am plitude or 49 m s acceleration Impact acceleration does not exceed 98 m s The flowmeters are fixed to prevent damages 21 APPENDIX A View of the flowmeters 107 85 AFLQUUT MF MAGNETIC FLOW METER Temperature class T90 MAP 1 6MPa CE Power supply 24VDC MF X20L DNXX reference dimension 1 Display if applicable 2 Measuring Unit 3 Flow Sensor 4 Signal cable gland 5 Power cable gland 6 Wires for connection between the EFM case and pipeline 7 Electrodes Weight no D mm H mm L mm H mm more than kg 50 81 113 188 0 78 58 81 113 188 0 85 65 90 123 196 1 04 75 98 133 204 1 24 87 110 153 216 1 61 Fig A 1 View of the MF 420 520 L flowmeter DN20 DN50 nominal sizes polymeric flow tube 22 AFLQUUT MF MAGNE
22. n the output regardless of flow direc tion Active V means that pulses are only generated for direct flow active V means that pulses are only generated for reverse flow In the State Logic mode one signal level on the input corresponds to the event state or its specific condition and the other level corre sponds to the no event state or another condition For the logic mode Active level is the parameter to be config ured which corresponds to the event state To set function of the output in the logic mode the following options may be selected Flow direction signal level on the output is changed without lag on changing flow direction Active level corresponds to direct flow Error Q gt Qmax signal level on the output is changed if the measured flow rate exceeds Qmax specified for DN of a given flowmeter Any error signal level on the output is changed in case of any alarm situation detected by the flowmeter 11 Reverse flow signal level on the output is changed only if the actual time of changing flow direction exceeds the preset time lag the value of T lag is set from 0 to 60 min Active level corresponds to direct flow Supply control High signal level is generated if power is applied to the flowmeter In case of power supply failure output signal is absent CAUTION In bidirectional flowmeters flow and volum
23. package are specified in Table 2 Table 2 Item Qty Notes Flowmeter Note 1 2 RS 232 adaptor with cables Optional Installation kit Note 3 Equipment Certificate Operating documentation User manual Installation manual NOTES Flowmeter s design version and nominal diameter are specified in the purchase order 2 The flowmeter is delivered in standard configuration The factory con figuration settings listed in Appendix C may be changed on customer s request 3 Gaskets power cables and signal cables are included in the standard supply Cable length is customer selectable Standard length for power cables is 1 5 m Multipurpose viewer software package with AFLOWT MF pro gram is used to process data on a PC via RS 232 Serial Interface 1 4 DESIGN AND OPERATION 1 4 1 Operation principle The flowmeter comprises an electromagnetic flow sensor FS and a microprocessor measuring unit MU Operation principle is based on measuring electromotive force in duced in electrically conductive liquid when it moves in magnetic field The magnetic field is furnished in the inner channel of the flow sensor s flow tube by a special electromagnetic system 1 4 2 Operation modes Table 3 The flowmeter operates in three modes ADJUSTMENT adjustment and calibration SERVICE start up procedures OPERATION user mode Flowmeter s operating modes are set by placing removing jump ers
24. se switch For the Active level Low setting the output states and switch states are related inversely To set the active power supply mode for an output stage it is nec essary to connect the output stage to the internal 5 V power source by placing jumpers between J1 and J3 terminals on the flowmeter s board for general purpose output N1 and between J2 and J4 terminals on the flowmeter s board for general purpose output N2 In the active power supply mode the open switch state relates to output voltage in the range of 2 4 5 0 V the close switch state corre sponds to output voltage of no more than 0 4 V External load resis tance shall be 1 kOhm as a minimum The passive power supply mode means powering from an external power source with output DC voltage up to 24 V Permissible value of external load current is maximum 10 mA Length of signal cables should be no more than 300 m 27 APPENDIX C Factory configuration settings Table C 1 Unidirectional Bidirectional flowmeter flowmeter Parameter General purpose General purpose General purpose General purpose output N1 output N2 output N1 output N2 1 Operation mode Frequency Frequency State Logic Reverse 2 Function Q direct flow oy absolute flow value of flow 3 Conversion coefficient Kp As per Table C 2 As per Table C 3 AsperTableC 2 lt o 4 Flow cutoffs As per Table C 4 AsperTableC 4
25. ter s display Table 4 Symbol Parameter Units Number of digits indicated integral part fractional part Average volumetric 3 Q flow tate m h Up to 7 Up to 6 Totalized 3 V volume m Up to 4 3 Totalized 3 yii volume of forward flow m UROA Totalized 3 y volume of reverse flow m Mpio T Time of hour min up 5 hour 2 min totalizer operation hour Up to 6 2 NOTES 1 Totalized volume is the algebraic considering the sign of the flow sum of the flow volumes totalized for both forward positive and reverse negative flows For unidirectional flowmeters the Totalized volume value equals the Totalized volume of forward flow value 2 Reverse flow flowrate and volume along with the negative values of to tal volume are indicated by negative sign 3 When a totalized value exceeds maximum the totalizer rolls over and counting starts from zero The MF 520L F flowmeters are equipped with a seven segment two line 8 character LCD with decimal point Fig 1 The lines are as fol lows Alphanumeric data line Marker line The marker displayed as V character indicates the parameter the value of which is being displayed The parameter symbols stenciled on the device s front panel are located under the flowmeter s display A z J 0 I alphanumeric data line marker line a al marks on the front panel Fig 1 View of the display showing the value of reverse flow volume V
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