User`s Manual Shanghai Cowell Machinery Co.,Ltd.
Contents
1. Fig 4 4 b Connection of electro magnet counter 14 e Integrated Flow o9 E 41 2 3 4 5 6 H PCOM Fig 4 4 c Connection of electronic counter m 900 oo WL Low Lim itA lum OP T I f DC Pow er Supply alt 8 EE 2 EE AE hib N N U pperL im itA lan i Fig 4 4 d Connection of alarm output inside outside ee ae PUL ii PDR i atm ee PCOM L_i ALCOM Fig 4 4 e Connection of OC gate 15 4 4 4 Grounding Contact area of copper Connector PE on Converter Cabinet for grounding should be larger than 1 6mm Contact resistance should be less than 10 4 5 Digital output and calculate Digital output means frequency output and pulse output and both of them use the same output point so user can choice only one type of them but not both 4 5 1 Frequency output Frequency output range is 0 5000HZ and corresponding the percent of flux _ Measure value Full scale value The up2. Whole time Att 0002 20H Exactitude to minute 6 3 Examine power off records Push down key Enter to enter the model Displaying Turn off Time a No power off records means there are no power off records push any key to return to Flow Display Model b If having power off records push Up key to display next recording and Down key to display preceding recording Finally Push down the key Enter to return to Flow Display Model 6 4 Clear the records After user set down the records it can clear all the records Do like this Step 1 push Complex Enter to password setting Step 2 input password 4 11 Step 3 push Complex Enter for a second to clear records 34 7 Recording gross of hour has hour gross recording function At present much flowmeter measure system uses ladder time method for example some supply water system For this complexion L_MagB designs hour gross recording function Use the unit as hour record the gross flux in this hour and supply gist to this method 7 1 Function parts Hour gross recording function accords to the clock inside so make sure the clock inside is OK a Set the year month day hour minute and second exactly b Make sure the power inside is enough exchange batteries every 5 years 7 2 Format There are 1024 record stores and everyone records one hour power off When 1024 numbers have
3. HART Bus Conception HART Bus is a kind of data communication Bus using in field apparatus which is developed by Rosemount enterprise in 1993 Its English name is the abbreviation of Highway Addressable Remote Transducer which means addressable remote sensor data path Its transferring mode of data signal is to fold a current FM signal on current signal which value is from 4 to 20 Logical one is represented by 1200Hz Logical zero is represented by 2200Hz Baud rate is 1200bps The signal modulation waveform is as follows INPUT ARXA OUTPUT OR ST 1 1200s 42 2 HART Bus network fig HART Bus transfers data signal through signal line which value is from 4 to 20mA For this reasonit can save local data communication line and implement data communication Its adaptive for local using The local network fig composed by HART Bus is as follows HART electronetic owmeter display p instrument 3 Matters need attention of HART using function meter 1 Load which is parallel connection between electrical flowmeter and Hand held uint and HARTMODEM is on polarity 2 Resistance of circuit should be greater than 2009 less than 500Q 3 Hand held uint and HARTMODEM shouldn t be connection in series in current circuit Note 1 When parameter of L Mag series electronetic flowmeteconverter is set by hand held uint and HARTMODEM the meter should set address not zero modify Communication mode to be mode 2 and set bau
4. RESERVE eessen 38 11 1 L MAG ENGASEMENT eene Ie ee ee ee ee ee ee nnne rns n rese se resi n ans ese enses n anre enn 38 11 2 SHIPPING AND STORAGE Henne een nh nene ee ee ee ee ee ee Ee ee ee ee sene ee 38 APPENDIX ONE SELECTION OF EXCITING FREQUENCY RE 39 Appendix Two ON OFF Switch Diagram see see ee ee ee ee ee Re ee ee 41 Appendix Three HART function explaination eee 42 Electromagnetic Flowmeter Converter Instruction Manual 1 The product function introduction 1 1 Basic function Low frequency square wave exciting exciting frequency 1 10 power frequency 1 16 power frequency 1 25 power frequency 1 32 power frequency High frequency square wave exciting exciting frequency 1 2 power frequency for grouting liquid measure Exciting current can be selected for 125mA 187 5mA 250mA No need to add empty pipeline measurement and can measure continuously alarm by fixed value Current speed range 0 1 15m s current speed resolution 0 5mm s AC high frequency switching power range of voltage 85VAC 250VAC DC 24V switching power range of voltage 16VDC 36VDC Network function MODBUS RS 232C RS 485 HART and PROFIBUS DP choose Chinese or English displaying mode other languages can be set Three integrator gross inside respective register Forward gross reverse gross and minus value gross 1 2 Especial function Recording
5. limit of frequency output can be adjusted It can be choice from 0 5000HZ and e frequency range also can be choice low frequency such as 0 1000HZ or 0 5000HZ Frequency output mode general can be used in control application because it responses the percent flux Users can choice pulse output when the equipment is applied to count 4 5 2 Pulse output mode Pulse output mainly applies in count mode A pulse output delegates a unit flux such as 1L or 1M etc Pulse output unit divide into 0 001L 0 01L 0 1L 1L 0 001M 0 01M 0 1M3 1 MP 0 001UKG 0 01UKG 0 1UKG 1UKG 0 001USG 0 01USG 0 1USG 1USG When choice the pulse unit they should notice the match of the flux range of flowmeter and pulse unit For volume flux count formula as follows Q 0 0007854xD xV L S Or Qu 0 0007854xD x Vx10 M S Note D nozzle mm V velocity of flow m s The oversize flux and too small pulse unit will be made the pulse output over the up limit Generally pulse output should be controlled below 2000P S However the too small flux 16 and too large pulse unit will be made the instrument exports a pulse long time Otherwise pulse output is different from frequency output When pulse output cumulates a pulse unit it exports a pulse Therefore pulse output is not equality Generally measure pulse output should choice count instrument but not frequent instrument 4 5 3 The connection of digital output Digital output has three conn
6. sensor use flow resist rate to judge whether full of pipe so empty pipe value is a continuum value Even though different flow has different resist rate when the flow is full the resist rate is steady It uses relative resist rate to calculate empty measure value define the full pipe resist rate 100 as empty pipe alarm to adjust to 100 when flow surface is lower than the electrode the electrode touches the air and the rate will be higher so the instrument displays empty pipe alarm For fact use when the flow is full of pipe after adjusting empty pipe to 100 and the surface is lower than the electrode completely L Mag empty pipe value will get 1000 all more So empty pipe alarm set at about 900 and can alarm empty state correctly When the surface drops from full to empty it will hang some liquid on the wall and this 30 will lead the empty pipe measure not to get the max immediately but needs some time So if want empty alarm reacts quickly make the threshold smaller as 500 5 2 2 19 Mtsensor Cre Liquid specific conductance is different because of different mediator and area The instrument can t determine threshold of empty pipe alarm in every condition detailedly So L_Mag uses mathematics normalization method to set threshold as the method of setting alarm percentage by users Instrument designing has an amendment coefficient of empty pipe No matter which mediator where the instrument being used if in the condition of ful
7. stored the time will not recorded anymore Record format like this Time 0001 Nid Date 064E04 01 Han Gross 220000009862 Ad X 0000000068 7 3 Check the gross Push Up to the interface of hour gross then push Up or Down to check at last push Enter to return 7 4 Clear the records The grosses of hours and cumulations are correlatively so clear one clear both Do like this 35 Push Complex Enter to the password interface input the 4 password then push Up to the Total Clear and input the password to complete The records will be cleared 8 Infrared telecontrol function keys The operation of the infrared hand remote control keyboard is the same with the operation of the instrument When use it please keep the infrared transmitter of the infrared hand remote control keyboard and the receiver of the instrument parallel with the distance of about one meter Concrete operation referring to the figure E S x E 2 El e Ei em Fig 8 1 The communication figure of the infrared hand remote control keyboard and the instrument 9 Alarm information PCB of electromagnetic flowmeters converters use SMT so for user it is unable to service and cannot open the shell of converter Intelligent converters have self diagnose function Without trouble of power and hardware circuit the normal trouble can be alarmed correctly This information disp
8. the resistances by means of multimeter with pointer to see the charging process well 37 The DC voltage should be less than 1V between DS1 and DS2 testing the voltage by means of multimeter If DC voltage is larger than 1V the electro poles of sensor were polluted that have to be cleaned 10 4 Measure flow disallow Tf measured fluid full of testing pipe of sensor Check if the signal cable is OK Check the sensor modulus and sensor zero whether set as the sensor scutche on or leave factory checkout 11 L_Mag encasement and reserve 11 1 Encasement Electromagnetic flowmeter converter is packed as vacuum and can insulate wet The bag is appropriative one if the bag is open it will not product of original factory Installation Manual Certificate of Product and Packing List are all with the converter 11 2 Shipping and storage To prevent the product from damage during shipping keep the original package of manufacturer The products should be stored in storehouse that meets following conditions a Keep off raining and moisture b Keep off heavy vibration and strike c Ambient temperature 20 60 C d Humidity less than 80 38 Appendix One Selection of exciting frequency re L_Mag afford three exciting frequency types 1 10 frequency type 1 1 16 frequency type 2 1 25 frequency type 3 and 1 32 frequency type 4 The small bore one should use 1 10 frequency and large bore one should use 1 1
9. value of the flow with the volume unit following the last valid The microprocessor can remind the users of the set mistakes leading to the upper limit and lower limit overflow causing by unsuitable choosing the volume unit For example when caliber is 200mm and choose l h as the display volume unit if the speed of the volume is 1m s and the volume is 113097 L h the figures is more than 5 valid and cause upper limit overflow and error is showed on the panel So now the volume unit can be chose from m s m min and m h While caliber is 3mm choose mis as the volume unit and the volume is 0 00000707m s it is impossible to show the valid using 5 valid and causing lower limit overflow and error is showed on the panel So now the volume unit can be chose from L s L min or L h 5 2 2 7 Flow Rspns 27 It means time of filter measure value The long one can enhance the stability of flow display and output digital and fits for gross add up of pulse flow the short one means fast respond rate and fits for production control It is set by select 5 2 2 8 Flow Direct If users think the direct and design are differ just change the direct parameter is OK but not change exciting or signal 5 2 2 9 Flow zero Make sure the sensor is full of flow and the flow is stillness Flow zero is shown as velocity of flow mm s Converter s zero flow correction displays like this Upper small words FS means measure value of zero Lower l
10. 0 001L m 13 Segma N Ena Select 2 Enable Disable 14 Analog Type Select 2 0 10mA 4 20mA 15 Pulse Type Select 2 Freque Pulse 16 Pulse Unit Select 2 0 001L 1m 17 Frequen Max Select 2 1 5000 HZ 18 Mtsensor Ena Select 2 Enable Disable 19 Mtsnsr Trip Set count 2 999 9 20 Mtsensor Cre Set count 2 0 0000 3 9999 21 Alm High Ena Select 2 Enable Disable 22 Alm High Val Set count 2 000 0 199 9 23 Alm Low Ena Select 2 Enable Disable 24 Alm Low Val Set count 2 000 0 199 9 25 Clear Total Password 3 000000 399999 24 He Total Key Set count 4 000000 399999 27 Sensor Code User set 5 Finished YM 28 Sensor Code2 User set 3 Product number 29 Sensor Fact Set count 5 0 0000 3 9999 30 Field Type Select 5 Mode 1 2 3 4 31 Flow Factor Set count 5 0 0000 3 9999 32 Mult Factor Set count 5 0 0000 3 9999 33 Analog Zero Set count 5 0 0000 1 9999 34 Analog Range Set count 5 0 0000 3 9999 35 Meter Factor Set count 5 0 0000 3 9999 36 MeterCode 1 Factory set 3 Finished YM 37 MeterCode 2 Factory set 5 Product Serial No 38 FwdTotal Lo Correctable 5 00000 99999 39 FwdTotal Hi Correctable 5 00000 39999 40 RevTotal Lo Correctable 5 00000 99999 41 RevTotal Hi Correctable 5 00000 39999 42 Year User correct 5 00 99 43 Month User correct 5 00 99 44 Day User correct 5 00 99 45 Hour User correct 5 00 99 46 Minute User correct 5 00 99 4
11. 6 4 6 SIMULATION SIGNAL OUTPUT ANDCALCULATR nnne ee ee ee ee ener nnn 19 51 KEYS FUNCTION ER gedd ENEE USA NEEN 22 5 2 FUNCTION KEYS FOR SETTING PARAMETERS ees sees see ee ee see ee ee ee ee ee ee ee ee ee ee ee ee ee ee 23 6 RECORDING TIME WHEN POWER TURN OFF WITH POWER TURN OFF 6 1 DISPLAYING TURN OFF POWER TIME 33 6 2 ERASING TURN OFF POWER RECORDING esse ese ee esse see ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee 34 6 3 EXAMINE POWER OFF RECORDS cesses ees see ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee eterni nnne nnns 34 64 CLEAR THE RECORDS cte eR EER de Ge GEREEN de TE GE Ge NEU ET GENE ERE RE YER SN ed sed 34 7 RECORDING GROSS OF HOUR HAS HOUR GROSS RECORDING FUNCTION 71 EUNGTION PARTS Es EE Gees Gee DE Ge n GE ee oe GE ee DE Ee EE ER SG SE ee ee GE ee GE ee se TaS ed 35 TZ oe AS VO OR N 35 TA CHECK THE GROSS 4 ER N EE EN ER EE RE OR N 35 JAGCEEAR THE RECORDS ER eT 35 9 ALARM INFORMATION ccccccsosssocssecssosssecssosssecscosssecscasssecssosesecssasesecssosssecsscadesecsscdesecs 36 10 TROUBLESHOOTING sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssesees 37 101 NODISPEAY ees sen ettet ee De ote e ee Gee Ge e eege 37 10 2 Ei HN TEE EE 37 10 3 EMPTY PIPE ALARM SE DR Ee ed ENEE SEENEN SEO 37 10 4 MEASURE FLOW DISALLOW csccccccseeccccesecccceseccccusecsccueececeueecssseseceseusecsesueecessueseses 38 11 L MAG ENCASEMENT AND
12. 6 or 1 25 frequency When using please select type 1 first if the zero of velocity is too high select the type 2 or type 3 In the user s sensor that L_Mag gives often the sensor is not fit for the L_Mag converters at this time can do like this 1 Small exciting loop resist 39 If the exciting loop resist is smaller than the sensor s request can series resist to get the total value The series resist s power should be more than one time of fact for example series 10Q on 250mA current the power will be 3W 2 Large exciting loop resist change exciting current If the exciting loop resist is larger than the sensor s request can change the exciting current for example if exciting loop resist is 70Q for 250mA this is larger so can change the current to 187mA 3 Large exciting loop resist change loop connect If the exciting loop resist is larger than the sensor s request can change the connect of loop for example if exciting loop resist is 200Q every exciting loop resist is 100Q parallel connection the upper and lower loop is OK According the analysis change the connect of exciting loop measure from either head of exciting loop Total resist R1 Ry parallel connection R2 R12 lt 1200 As the Fig Ry R2 addition resists Ri Rr2 exciting resists R Ry Li CYY YN EXT e 9 EXT R Rig Ly YY Total resist Ri R
13. 7 Second User correct 5 00 99 48 Pass Word 1 User correct 5 0000 9999 49 Pass Word 2 User correct 2 0000 9999 50 Pass Word 3 User correct 5 0000 9999 51 Pass Word 4 User correct 9 0000 9999 52 Load Preset Factory set 6 Initialize password Note 4 and 13 don t use when drop time 43 49 are recording time when power turn off no this function no these parameters 25 5 2 2 Converters parameters Parameters of converters can decide the running status process and output ways as well as state of output Correct option and setting of parameters can keep the converters running optimally and get higher accuracies of output bother in display and in measurement There are 6 grades of passwords for setting parameters function Grades 1 to grade 5 of passwords are for users and grade 6 of password is for manufacturer Users can reset their passwords of grades 1 4 in grade 5 Users can check converters parameters in any grade of password However if users want to change parameters pf converters deferent grade of parameters have to be used by the users Grade 1 of password set by manufacturer as 0521 users can only read parameter Grade 2 of password set by manufacturer as 3210 users can change 1 24 parameters Grade 3 of password set by manufacturer as 6108 users can change 1 25parameters Grade 4 of password set by manufacturer as 7206 users can change 1 26parameters Grade 5 of password Fixed users can change 1 51 param
14. Electromagnetic Flowmeter Converter User s Manual Shanghai Cowell Machinery Co Ltd CONTENTS 1 THE PRODUCT FUNCTION INTRODUCTION sees sseesseesse esse esse esse esse esse esse esse esse esse L 1 1 BASIC FUNCTION nce cave fenced Ee By EE cen e GEE N n e e eae ee oe n s 1 1 2 BSPECTAE FUNCTIONS 1 555 eege ee ee 1 1 3 NORMAL OPERATING CONDITIONS cccccccececcceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeees 2 1 4 TYPE OF CONNECTING WITH SENSORS ese ese ee ee ee ee ee ee ee ee ee ee ee ee ee ee nennen nennen 2 1 5 PLOT OF INSTALLING MEASURE esse ees ee ee ee ee ee ee ee ee ee ee ee ee ee ee nennen eene estresore sare enne 2 2 BASIC CIRCUIT OF CONVERTER eere eene entente ntes esos neon seen seenseenseeneeeneess d 3 INDEX OF TECHNICAL PERFORMANCE sesse esse esse esse esse esse ee see ese ee ee see see ees see ese D 3 1 STANDARD OF IMPLEMENT ees sees esse ee ee ee ee ee ee ee ee rns ene ee ee rn sen re ese arisen ee ee ee ee 5 3 2 BASIC PARAMETERS AND PERFORMANCE INDEX ees sees esse ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee 5 4 L KEYS AND DISPLAY mii hs eed hehe ds SE ee Hee 8 4 2 SECTION PICTURE OF CONVERSION esse sees ee ee ee rrr ee Re RR Re ee ee Re ee ee ee ee ee ee ee ee ee ee ee ee Ee 9 4 3 CONNECTIONS OE SENSOR eieiei 10 4 4 CHARACTERISTIC AND CONNECTION OF CABLE eese 13 4 5 DIGITAL OUTPUT AND CALCULATES ses dies idee eei ee a EHE ED Ee ed 1
15. IC 100mA Vcc KS Vcc V Low voltage IC 100mA 0 9 1 0 1 4 V 4 6 Simulation signal output and calculate 4 6 1 Simulation signal output There are two signal system 0 10mA and 4 20mA user can select from parameter setting Simulation signal output inner is 24V under0 20mA it can drive 750Q resistance The percent flux of simulation signal output Measure value 0 Full scale value The current zero is 0 when 0 10mA and the current zero is 4mA when 4 20mA e the scale of current the zero point of current It can be advanced simulation signal output distinguish User can select the range of measure The manufacture s parameter have been adjusted it can t need adjust If have abnormity it can consult 4 6 2 4 6 2 Simulation Signal Output Adjust 1 The Converter adjust preparative When the converter is running 15 minutes the inner of converter becomes stabilization 19 Preparative 0 1 amperemeter or 250 0 1 voltage instrument IOUT Converter ICOM 2 Current zero correct When the converter getting into parameter setting selecting to Analog Zero and enter to it The standard of signal fountain getting to O Adjust parameter make amperemeter is 4mA 0 004mA 3 The full scale current correct To select Anlg Range to enter Adjust the converter parameter make amperemeter is 20mA 0 004mA Adjust the current zero and the full range the current
16. When electrify the instrument comes into measure way automatically and under this way it can do all the functions and display data Under the parameter setting way user can set the parameter by the four keys 5 Keys function 5 1 1 Down key function in self testing way Down key Selecting displayed data on lower line in turn Up key Selecting displayed data on higher line in turn Compound key Enter key Come into parameter setting Enter key Press it to come into the picture of select function Under the measure adjust of the LCD contract the squared with small LCD uses Compound key Up key or Compound key Down key for several seconds other LCDs use the potentiometer behind the LCD 5 1 2 Function keys for parameters setting Down key Subtract 1 from the number at cursor area Up key Add 1 to the number at cursor area 22 Compound key Down key Cursor turns left Compound key Up key Cursor turns right Enter key In Out submenu Enter key Press for two seconds under any state and will return to automate measure way Note 1 When use Compound key you should press Compound key and Up or Down both 2 It will return to the measure way automatically after 3 minutes when under the parameter setting way 3 Direct select of zero correction about the flow you can move the cursor t
17. are waveform and Pulse output is a serial wave of square wave Frequency output is mainly used for instant flow and total integrated flow in short time measurement Frequency output can be chosen in equivalent frequency unit and volume of integrated flow can be displayed Frequency Output can be used in long time measurement for total integrated flow with volume units Frequency output and pulse output are usually from OC gates so that DC power supplies and load resistors have to be required See Part 4 5 5 2 2 15 Pulse Unit Equivalent pulse Unit is referred to one pulse for value of flow The range of pulse equivalent can be chosen Pulse Equivalent Flow 1 0 001L cp 2 0 01L cp 3 0 1L cp 29 4 1 0L cp 5 0 001 m cp 6 0 01 m cp 7 0 1 m cp 8 1 0m cp Under the same flow the smaller pulse the higher frequency output and the smaller error will be The highest pulse output is 100cp s and mechanism electromagnetic counter can get 25 frequency s 5 2 2 16 Frequen Max Frequency output range is as the upper limit of flow measure just the percent flow 100 Frequency output upper limit can be selected between 1 5000Hz 5 2 2 17 Mtsensor Ena The state of empty pipe can be detected with the function of converter In the case of Empty Pipe Alarm if the pipe was empty the signals of analog output and digital output would be zero and displayed flow would be zero too 5 2 2 18 Mtsnsr Trip The
18. arge words correction value of zero When FS is not 0 make FS 0 Note if change the value on next line and FS increases please change the to correct FS to zero Flow zero is the compound value of the sensor and should be recorded in sensor list and band The unit will be mm s and the sign will be opposite with correction value 5 2 2 10 Flow Cutoff Flow cutoff is set in percentage of Upper Limit Range of flow and users can delete all Negligible Small Signals of flow volume velocity and percentage out of displaying and outputting them Sometimes user can delete output of current output signal and frequency pulse output signal only to have flow velocity and percentage being displayed 5 2 2 11 Total Unit Converter display is counter with 9 bits and the max is 999999999 28 Integrator units are L m UKG and USG liter stere English gallon American gallon Flow integrator value 0 001L 0 010L 0 100L 1 000L 0 000 0 010m 0 100m 1 000m 5 2 2 12 Segma N Ena When SegmaN Ena is enable if the flow flows the sensor will export pulse and current When it is disable the sensor will export pulse as 0 and current as 0 4mA or OmA for the flow flows reversals 5 2 2 13 Analog Type Output current types can be chosen by users as 1 10mA or 4 20mA practically 5 2 2 14 Pulse Type Two kinds of Pulse Outputs are can be chosen Frequency Output and Pulse Output Frequency Output is continuous squ
19. d rate to be 4800 2 If communication mode address or baud rate is not right band held uint and HARTMODEM couldn t set parameters 43
20. ected points digital output connected point digital ground point and symbol as follows PUL digital output point PCOM digital ground point PDIR flux direction junctions Commonly liquid flows for one direction and at this time user can just use digital output point and digital ground point But if user wants to know the direction can use the PDIR PUL and PDIR use PCOM together PUL and PDIR are both collector plough output user can connection as the below circuit 4 5 4 The connection of digital voltage output PUL l i c P Pin User di equipment E i E b l I Voltage input Inside Pcom Fig 4 5 a the connection of digital voltage output 4 5 5 Digital output connect photoelectricity coupling PLC etc 17 PUL inside equipment Fig 4 5 b Digital output connect photoelectricity coupling Commonly user s photoelectricity coupling current is about 10mA so about E R 10mA E 5 24V 4 5 6 Digital output connect relay inside Fig 4 5 c Digital output connect relay Commonly relay needs E as 12V or 24V D is extend diode now most middle relays has this diode inside If not have user can connect one outside Table of digital output parameter POUT and PDIR Parameter Test condition Mini Typical Max Unit Volatge IC 100 mA 3 24 36 V Current Vol lt 1 4V 0 300 350 mA IC 100mA Frequency 0 5000 7500 HZ Vec 24V High voltage
21. eters Password Grade 5 can be set by skilled users Grade 4 is mainly used for resetting total volume in password Grades 1 3 can be set by any one who can be chosen by users 5 2 2 1 Language There are 2 languages for L Mag converter operation They can be set by users according to the users needs 5 2 2 2 Com Addres It means this instrument s address when communicates with many and has 01 99 holding the 0 5 2 2 3 Baud Rate 600 1200 2400 4800 9600 and 14400 baud rate 5 2 2 4 Com Protocol Tpye 1 is 485 communicates Type 2 is other special communicates 26 5 2 2 5 Sensor Size Converters can be equipped with some deferent sensors that have deferent diameter of measuring pipes The pipes in deferent diameters from 3mm to 3000mm can be chosen in relative table 5 2 2 6 Flow range Flow range means upper limit value and lower limit value is set 0 automatically So it makes the range and makes the relation of percent display frequency output and current output with flow Percent display flow measure measure range 100 Frequency output flow measure measure range frequency full Current output flow measure measure range current full base point Pulse output will not affect Notice The flow unit can choose form the parameters L s L min L h m s m min m h and the user can choose the proper unit according to the technological requirement and using habit Notice Using 5 valid to show the
22. fication Coefficient is the Converter Verification Coefficient Users must calibrate the converters by means of general standard verifiers Setting this coefficient to make that all converters have the same features in work the converters can match the sensors for flow measurement 5 2 2 27 Mult Factor This is used to bright dyke diving measure such as one sensor is compounded with two alike caliber pipes then the factor is 3 0000 5 2 2 28 FwdTotal Lo and hi Positive total volume high byte and low byte can change forthcoming and reverse total value and be used to maintenance and instead User use 5 byte code to enter and can modify the positive accumulating volume Usually it is unsuitable to exceed the maximum the counter set 999999999 5 2 2 28 RevTotal Lo and hi User use 5 byte code to enter and can modify the negative accumulating volume 3 A Usually it is unsuitable to exceed the minimum the counter set 999999999 5 2 2 29 Date Year Month Day and Time Hour Minute and Second Users can set the date Year month and day and Time hour minute and second in 32 Password 5 5 2 2 30 User s password 1 4 Users can use 5 grades of passwords to correct these passwords 5 2 2 3 Analog Zero When the converters are made in the factory output current have been calibrated to zero scale that is accurate 0mA or 4mA output 5 2 2 32 Analog Range When the converters is made in the factory output current have bee
23. function of the converter reached exactness The line degree of current output of conversion should be controlled within the scope of 0 1 4 Current line degree checking You can place the standard signal source in 7596 50 25 and check the line degree of current output 20 4 6 3 L_mag electromagnetic flowmeter converter s connection of current output User system IVIN DC24V SSS SS PE L_Mag IOUT Signal input converter R COM Fig 4 6 a L_Mag two connection User system Power 24V gs 24V L Mag converter COMM Fig 4 6 b L Mag three connection power supply and current output are not insulated b Power 4 24V bows 24V o amal L_Mag converter E IOUT Signal input User system COMM COM Fig 4 6 c L Mag four connection power supply and current output are insulated 21 5 Setting parameters After L_mag electromagnetic flowmeter converter and sensor connect to the pipe no matter demarcate or use may do the next work first Connect the pipe fore and aft the sensors tighten Make sure the sensor connects the earth Make sure the liquid stillness when regulating zero of the instrument Make sure the oxidation velum of sensor makes steadily electrode and liquid contact continuously about 48 hours Tworunning ways Self testing way Parameter setting way
24. hould be higher than 500V 4 Operation converter 4 1 Keys and display 4 1 1 Squared define keys and LCD screen display E 023456789m 9 V a 9 Alarm Indicator i Flow Volume Flow Volume 2578 5m h Flow Velocity Percentage Conductivity Ratio Forward amp Reverse Integrated Volumes Deference of Forward and Reverse Integrated Volumes Display Alarm Content Enter With ALT Key to form Enter and OK UP Plus 1 Page UP With OK Key to form Right Move Down Minusl Page Down With OK to form Left Move Compound Key Fig 4 1 a Keys on squared panel and LCD display Flow volume 066 08 Unit Alarm Type SYS 15 47 m3 Hr 0000000415 Time Flow velocity Ratio of Emptiness 9 v a 9 Percentage Y M D Hour Min Second Forward amp Reverse Integrated Volumes Deference of Forward and Reverse Integrated Volumes Enter With ALT Key to form Enter and OK UP Plus 1 Page UP With Shift to form Right Move Down Minusl Page Down With Shift to form left Move Compound Key Fig 4 1 b Keys on squared panel and large LCD display 4 1 2 Rotundity define keys and LCD screen display 76 570 Alarm Indicator Lo X1m Hr limit 000000013 5m CV A 9 Flow volume Unit Flow Velocity Ratio of Emptiness Percentage Forwa
25. ielded Conductor connected to Signal Ground 12 4 4 Characteristic and connection of cable 4 4 1 Flux signal line When separated models of converters are assembled with sensors for measuring flow of fluid which conductivity is larger than 50uS cm PVVP 2 0 2 mm model cable metal shielded signal cable covered with PVC can be used as communication cable for flow signals The length of signal cable should be less than 100 m Signal cables have to be connected to sensors that were assembled by producers Connections of signal cables are shown in Fig 4 3 b for squire shaped models and Fig 4 3 d for circle shaped models respectively The converter can output equivalent level of shielded exciting signal voltage so that interference to flow measurement signals can reduced by means of lowering the distributed capacitance of communication cable When measured conductivity is less than 50uS cm or signals are transferred in remote distances double conductor and double shielded signal cable at equivalent level of voltage can be used For example special STT3200 cable or BTS model signal cable triple shielded can be used for signal communication 4 4 2 Exciting current cable Two conductor and insulating rubber covered cables can be used as exciting current cables Suggested model is RVVP2 0 3mm Length of exciting current cable should be equal to that of signal cable When the model STT3200 cables are used for exciting current and sig
26. l lines in squad model 4 3 3 Links and labels of connectors in Circinal Model L2 Ll COM I COM P AH AL Seele Fig 4 3 c Connectors in circinal model 11 Symbols and Des cription of Connectors in Circinal Pane I Output Current for Flow Measurement COM Output Current Ground for Flow Measurement P Frequency Pulse Output for Bi directional Flow COM Frequency Pulse Output Ground AL Alarm Output for Low Limit AH Alarm Output for Upper Limit COM Alarm Output Ground FUSE Fuse for Power Supply Ti Communication Input Signal To Communication Input Signal G RS232 Communication Ground Li 220V 24V Power Supply La 220V 24V Power Supply 4 3 4 Labels and connection of signal lines in circinal model OO Zi W hite Cable Red 12 Conductor Shielded C able B lack 12 C onductor Shielded C able Red 10 Conductor Shielded C able B he 13 Conductor Shielded C able Shield Screen B lack Shielded C able Fig 4 3 d Labels and connection of signal lines in circinal model Signal lines labels in circinal model White twisted pair cable Black shielded twisted pair cable 10 Conductors Red connected to Signals 1 for exciting current 12 Conductors Red 12 Conductors Black 13 Conductors Blue connected to Signals 2 Sh
27. l packages we adjust empty pipe amendment coefficient to make instrument indicating relative conductance be 100 then set empty pipe alarm threshold between 500 and 999 to finish operation of empty pipe alarm 5 2 2 20 Alm High Ena Users can choose Enable or Disable 5 2 2 2 Alm High val The parameter of upper limit alarm is percentage of flow range and can be set in the way of setting one numerical value between 0 199 9 When the value of flow percentage is larger than the value of setting value the converter outputs the alarm signal 5 2 2 22 Alm low The same as upper limit alarm 5 2 2 23 Sensor Code It is referred to the produced date of sensor and the serial number of product that can keep the sensors coefficient right and accurate 5 2 2 24 Sensor Fact Sensor Coefficient is printed on the Label of the sensor when it is made in factory The 31 sensor coefficient has to be set into Sensor Coefficient Parameter when it runs with converter 5 2 2 25 Field Type The Meter afford three exciting frequency types 1 10 frequency type 1 1 16 frequency type 2 1 25 frequency type 3 and 1 32 frequency type 4 The small bore one should use 1 10 frequency and large bore one should use 1 16 or 1 25 frequency When using please select type 1 first if the zero of velocity is too high select the type 2 or type 3 Note Demarcate on which exciting type working on it only 5 2 2 26 Flow Factor Flow Veri
28. lays on the left of LCD The trouble is like this Hig Alm Flow high limit alarm Low Alm Flow low limit alarm Mtsnsr Alm Flow empty pipe alarm SYSTEM ALM System exciting alarm UPPER ALARM Flow high limit alarm 36 LOWER ALARM Flow empty pipe alarm LIQUID ALARM Flow empty pipe alarm SYSTEM ALARM System exciting alarm 10 Troubleshooting 10 1 No display a Check the power supply connection b Check the power fuse to see for OK c Check the contrast of LCD and regulate it to working state 10 2 Exciting alarm a Check if the exciting cables EX1 and EX2 did not connected b Check if the total resistance of sensor s exciting coil resistances less than 150 2 c If a and b are OK the converter is failed 10 3 Empty pipe alarm H measured fluid full of testing pipe of sensor When shorting circuit three connectors SIG 1 SIG 2 SIGGND of converter and no Empty Alarm displayed then the converter works OK In this case it is possible that conductivity of measured fluid may be small or empty threshold of empty pipe and range of empty pipe are set wrongly Check if the signal cable is OK Check if the electro poles are OK or not Let the flow is zero then the displayed conductivity should be less than 100 Resistances of SIGI to SIGGND and SIG2 to SIGGND are all less than 50kQ conductivity of water during measurement operation It is better to test
29. limit ALML lower limit Output isolate photoelectricity isolate Isolate voltage gt 1000VDC Alarm output drive output by Darlington pipe the highest subjected voltage is 36VDC maximum of output current is 250mA 3 2 8 Digital communication port and protocol RS 232C interface designed by standard of IEEE RS 232C un electric isolate RS 485 interface designed by standard of IEEE RS 485 electric isolate MODBUS interface format of RTU electric isolate 1000V HART interface designed by standard of HART if you choose our hand held unit you can display the measure value on line and setting the parameters PROFIBUS interface designed by standard of PROFIBUS DP 3 2 9 Electric isolate Insulated voltage between simulated input and simulated output should be higher than 500V Insulated voltage between simulated input and alarm power supply should be higher than 500V Insulated voltage between simulated input and AC power supply should be higher than 500V Insulated voltage between simulated output and AC power supply should be higher than 500V Insulated voltage between simulated output and earth should be higher than 500V Insulated voltage between pulse output and AC power supply should be higher than 500V Insulated voltage between pulse output and earth should be higher than 500V Insulated voltage between alarm output and AC power supply should be higher than 500V Insulated voltage between alarm output and earth s
30. n calibrated to full scale that is accurate 1OmA or 20mA output 5 2 2 33 Meter Factor This fact is the special one of sensor made factory and the factory use this fact to unite L Mag electromagnetic flowmeters converters to make sure all the instruments can interchange by 0 196 5 2 2 34 Converter code 1 and 2 Converter code records the date of manufacturing and serial number of converter 6 Recording time when power turn off with power turn off function When power turns off the liquid in the piping still flows that means the flower also exist But because the power is cut so the insctrument could not record For resolving this problem L Mag electronics flowermeter designs length of power turn off time function to record the power turn off time and power turn on time for user to deal with 6 1 Displaying turn off power time There is a clock for timing when power turns off inside batteries power supply which can work longer than 5 years If using power turn off time function make sure this clock is OK 33 a Set year month day hour minute and second exactly b Make sure the power inside is enough exchange batteries every 5 years 6 2 Erasing turn off power recording There are 256 record stores and everyone records one power off When 256 numbers have stored the time will not recorded anymore Record format like this Number 001 m 019K Time 04H01H12Hf 1247 This time AYR 0000 20H
31. nals two cables can be put together as one cable 4 4 3 Output and power line All cables for signals transferring and power supply has to be prepared by users However it should be careful to choose the cables that meet the upper limit load of consuming current Note When DIP switch next to terminal is set to ON places the converter from its inside 13 can provide 28Vpower supply and up pull 10kQresistance to output Frequencies PUL PUL to isolated OC gate Alarm Output ALM ALM and Status Control CINSW Therefore when converter has frequency output and works with sensor together DIP switch can be set as ON getting frequency signals from PUL and PCOM terminals Pulse current output alarm current output and external power supply can see in Fig 4 4 a When inductive load is connected to converter diode should be used as in Fig 4 4 b The Meter Current A O Pp OE O OOO L EET oOO KEES EE ET VDCIO Fig 4 4 a Output current circuit Integrated Current H DC Power Supply d 900 h lls L PCOM
32. o the left or and use Down or Up to switch 4 Unit select of flow you can move the cursor to Flow Range and use Down or Up to switch 5 2 Function keys for setting parameters To set or correct working parameters the converter should be running in parameters setting way instead of measuring status In measuring status click Enter keys getting to the select of parameter and transfer password 0000 and then correct the password with one of the new passwords that are provided by manufacturer Finally push the Enter keys to work in Parameters Setting Way There are 6 Passwords in design and among them 4 for deferent operators in secret and 2 are fixed passwords for system operation 5 2 1 Parameters setting menu There 52 parameters of L Mag user can set every parameter The List of Parameters is 23 shown below Setting Parameters in Menu Code Parameter words Setting Way Grades Range 1 Language Select 2 Chinese English 2 Com Addres Set count 2 0 99 3 Baud Rate Select 2 600 14400 4 Com Protocol Select 2 Type 1 Type 2 5 Sensor Size Select 2 3 3000 6 Flow Range Set count 2 0 99999 7 Flow Rspns Select 2 0 100 8 Flow Direct Select 2 Forward Reverse 9 Flow Zero Set count 2 0 000 9 999 10 Flow Cutoff Set count 2 0 99 11 Cut Disp Ena Select 2 Enable Disable 12 Total Unit Select 2
33. rd amp Reverse Integrated Volumes Deference of Forward and Reverse Integrated Volumes Enter UP Plus 1 Page UP Doan Mine Page Down Compound Key Fig 4 1 c Keys on circinal panel and big LCD display Note When measuring pushing down Compound Key Enter will appear password of changing state base on distinction of secrecy and change the password as we provide Then pushing Compound Key Enter again and you can inter the state of setting parameter If want to return to the running state push Enter for several seconds 4 2 Section picture of conversion 4 2 1 Section picture of the split squared shells with small LCD and no communication Fig 4 2 a Section picture of the split squared shells with small LCD and no communication Note 1 Front Cover 2 LCD 3 Cable 4 Back Cover 5 Place for Communication Board 6 Cable for Display Flat face to LCD 20 Lines 7 Connectors 8 Lock for Cover 4 2 2 Section picture of the split squared shells with big LCD and communication 9 Fig 4 2 b Section picture of the split squared shells with large LCD and communication Note 1 Front Cover 2 Key Cable 3 Large LCD 4 Keyboard Cable Flat Face to LCD 16 Lines 5 Back Cover 6 Communication Board 7 Cable for LCD Flat face to LCD 20 Lines 8 Communication Cable Flat Face to Communication Board 16 Lines 9 Two Wired Communication Line
34. rrent Output Keyboard 1 5000Hz Frequency or Q Pulse Output Pulse Output OC Gate Status Status Output Control RS485 Communication Interface Fig 2 1 Structure of Converter s Circuit The converter can supply exciting current to the coil in the sensor of electronetic flowmeters the head amplifier amplifies the electromotive force from the sensor and converts it into standard signals of current or frequency so that the signals can be used for displaying controlling and processing See structure of converter circuit shown in Fig 2 1 3 Index of technical performance 3 1 Standard of implement The design production and instrument of Electromagnetic Flowmeter Converter implement JB T 9248 1999 Electromagnetic Flowmeters 3 2 Basic parameters and performance index 3 2 1 Pipe s inside diameter of relative sensor mm 3 6 10 15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3 2 2 Request of relative sensor Sensitivity of sensor signal under 1 m s output 150u V 200u V For L Mag electromagnetic flowmeter signal converters there are four currents of 62 5 mA in exciting loop which make up of 250mA and every 62 5mA is controlled by one 20Q exact resistance So user can choose different exciting current by changing the number of exact resistance The cu
35. rrent will be 250mA when the signal converters leave factory as such if there are three exact resistance the current will be 187 5 mA if two 125mA Resistance of sensor exciting coil 250mA exciting current 50 600 187mA exciting current 60 800 125mA exciting current 100 1200 3 2 3 Measure precision for assembly Table 3 1 Vs Setting measurement range m s Diameter mm Range m s Accuracy lt 0 3 0 25 FS 3 20 0 3 1 1 0R 1 15 0 5 R 0 1 0 3 0 25 FS 25 600 0 3 1 0 5 R 1 15 0 3 R 0 3 WF 0 25 FS 700 3000 0 3 1 1 0 R Lack 0 5 R FS for relative ranges R for relativevalue of measurement 3 2 4 Simulated current output Load resistor 0 1 5kQ 0 10mA 0 750Q 4 20mA Basic Errors 0 1 10pA 3 2 5 Digital frequency output Frequency output range 1 5000Hz Output electric isolate Photoelectric isolate Isolate voltage gt 1000VDC Frequency output drive output by field effect transistors the highest subjected voltage is 36VDC maximum of output current is 250mA 3 2 6 Digital pulse output Pulse output value 0 001 1 000 m cp 6 0 001 1 000 Ltr cp Pulse output width 20ms Pulse output isolate photoelectricity isolate Isolate voltage gt 1000VDC Pulse output drive output by field effect transistors the highest subjected voltage is 36VDC maximum of output current is 250 mA 3 2 7 Alarm output Alarm output junction ALMH upper
36. s 10 Connectors 11 Lack for Cover 4 3 Connections of sensor 4 3 1 Connectors and labels for the squared Q RS485 SCH SS esses ess E OO ooclee e e ee P SS Bs B gez 8565 529 a2 EBE BEE SEE PE POWER Seal TEE e T icf da Bs OT 343 BEE B R GEG Fig 4 3 a Connectors for the squared Labels of connectors in squared model SIGI Signall SGND Signal Ground SIG2 Signal2 S1 Shielded Excitingl To Separate Model Sensor 52 Shielded Exciting2 NSW 12V Pull Power EXT Exciting Current EXT Exciting Current VDCIO 24V Pull Power COUT Analog Current Output Analog Current Output CCOM Analog Current Output Ground PUL Flow Frequency Pulse Output Se Flow Direction Frequency Pulse Output COM Frequency Pulse Output Ground ALM Upper Limit Alarm Output ALM Low Limit Alarm Output Two Alarm Outputs ALCOM Alarm Output Ground 4 3 2 Signal lines and labels in squared model 2 Tem inalC old W elded cb 2 Tem inalC old W elded M etal Screen cb 10 H eatShrink Tube M etalScreen cb 10 H eatShrink Tube Red 32 C onductor Shielded C able Red 32 C onductor Shielded C able G reen 32 ConductorShielded C able G reen 32 Conductor Shielded C able Cable forF low SignalsRV V P2 x 32 0 2 Fig 4 3 b Connection and labels of signa
37. time when power turn off to record power broken time of instrument system automatically and recruit to count the missing flux Recording function of hour gross to record the flux gross by hour fit for timed measure Infrared handing telecontrol keyboard all the functions of far untouched controlling converter 1 3 Normal operating conditions Ambient Temperature Ranges fission 10 60 C Relative Humidity 5 90 Power Supply 85 250V 45 63Hz single phase AC Dissipation Power lt 20W After connecting sensor 1 4 Type of connecting with sensors The integrated circinal shells circinal shells shells connect with the flange directly explosion proof The integrated squared shells squared shells shells connect with the flange directly The split squared shells squared shells hang on the wall Signal converters connect with cable of sensor 1 5 Plot of installing measure Fig 1 Exterior size of the integrated circinal shells Fig 3 Exterior size of the split squared shells 2 Basic circuit of converter 32bit CPU RO preampli AID Em A JL exciting circuit EEROM ESCH nl Switching LCD 63Hz 4 Power Supply Display 4 20mA or 0 10mA Cu
38. u parallel connection Rz Ru 120Q as the Fig Ri R2 addition resists Ru Ri2 exciting resists 4 Sensor exciting current steady time so long inductance is too large For this question firstly changing exciting type select 1 16 or 1 25 frequency If cannot content change connect of exciting loop Exciting current transition time t L R L Exciting loop inductance R exciting loop resist 40 So decrease L and increase R both can decrease T According the analysis change the connect of exciting loop measure from either head of exciting loop R Ry Li CYYYN EXT e 9 EXT R Rig Ly NAN Total resist Ri Ri parallel connection Rz Ru lt 120 as the Fig Ri R2 addition resists Ru Ri2 exciting resists In the design of L_mag converter add testing of sensor transition time When user comes into parameter setting and get the Load Preset the instrument will test sensor transition time Setting parameter every time the instrument will test again automatically Exciting state Transition time ms Setting value Appendix Two ON OFF Switch Diagram Key 1 ON Pulse output to OC gate when flow verification was taken Connect pull up resistor 41 OFF No connection Key 2 3 ON ON Connected to RS485 terminal resistor for communication Appendix Three HART function explaination 1
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