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LRF-2000H User Manual

1. 11 92 7 2 V mMethod 11 2 759 2 Installation 12 62 7 4 W method Installation 2 cessere nmn nnne 12 62 7 5 N method Installation eene nnnm 13 52 0 Installgdgorp c heck ID u u EEEN 13 62 0 gal SI MOU 13 526 2 0NA QUAI uuu uu usss 14 82 8 3 Total Transit Time and Delta Time r rr 14 52 8 4 Time Ratio between the Measured Total Transit Time and the Calculated 3 Menu Window Details eese nennen nennen nnnm nnnm nnne nnne nnns 15 53 1 Menu Windows Arrangement nemen nnne nens 15 72 LONGRUN www ultrasonicscn com j gt i Om V ees Concentrating on Flow Measurement 53 2 Menu D6 GIS 15 OTO ss sus uns s 21 4 1 How to judge if the instrument works properly 21 4 2 How to judge the liquid flowing direction 21 4 3 How to change between units systems 22 4 4 How to select a required flow rate 22 4 5 How to use the totalizer multiplier eese 22 4 6 How to open or shut the 7 23 4 7 How to rese
2. Polypropylene 5 Polystryol 6 Polystyrene 7 Polyester 8 Polyethylene 9 Ebonite 10 Teflon Window for entering the liner material speed only for non standard liner materials Window for entering the liner thickness if there is a liner Window for entering the ABS thickness of the inside wall of the pipe Window for selecting fluid type For standard liquids that the user need not know the liquid speed include 0 Water 1 Sea Water 2 Kerosene 3 Gasoline M20 4 Fuel oil 5 Crude Oil 6 Propane at 45C 7 Butane at OC 8 Other liquids 9 Diesel Oil 10 Caster Oil 11 Peanut Oil 12 90 Gasoline 13 93 Gasoline 14 Alcohol 15 Hot water at 125C M21 Window for entering the fluid sonic velocity only for non standard liquids M22 Window for entering the viscosity of the non standard liquids Window for selecting the proper transducers There are 14 different types of transducers for selection M05 M06 M07 M08 e 10 11 12 M13 M16 M17 M18 M19 M23 If the user type transducers are used 4 user type wedge parameters which will be prompted by the software should be entered following 16 72 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement If the n type transducers are used 3n type transducers and pipe parameters should be entered following Window for selecting the transducer mounting methods M24 Four methods can be selected 0 V
3. Buzzer and the other is the OCT output Both for the Buzzer and OCT output the triggering sources of the event include the following There is no receiving signal There is poor signal received The flow meter is not in normal measurement modes Reverse flow Overflow occurs at the analogue output by 100 or more Overflow occurs at the frequency output by 120 or more 7 The flow rate is out of the specified range which is configured in windows M73 and M74 for Alarm 1 and in windows M75 and M76 for Alarm 2 Example A assume we need the Buzzer to start beeping when the flow meter is not ready in normal measurement Switch to M77 select item 2 Abnormal Measurement State Example B assume we need the Buzzer to start beeping when the flow rate is less than 300 m h and greater than 1000m h The following setup steps would be recommended 1 Enter flow rate lower limit 300 in M73 for 1 alarm 2 Enter flow rate upper limit 1000 in M74 for 1 alarm 3 Select item 6 Alarm 1 in M77 28 4 LONGRUN www ultrasonicscn com a a eee eee ee NM Concentrating on Flow Measurement Example C assume we need the OCT output to activate when flow rate exceeds 100 500m h and the relay output to activate when flow rate exceeds 600 1000m3 h The following setup steps would be recommended 1 Enter flow rate lower limit 100 in M73 2 Enter flow rate upper limit 500 in M74 3 Enter flow rate lower limit 600 in M75
4. Standard transducers are rated to 110 C Higher temperatures can be accommodated For further information please consult the manufacturer for assistance 1 7 Data Integrity and Built in Time Keeper All user inputted configuration values are retained in the built in non volatile flash memory that can store them for over 100 years even if power is lost or turned off Password protection is provided to avoid inadvertent configuration changes or totalizer resets A time keeper is integrated in the flow meter for the index of date totalizing and works as the time base of flow accumulation It keeps operating as long as the battery s terminal voltage is over 1 5V In case of battery failure the time keeper will not keep running and it will lose proper time values The user must re enter proper time values in case the battery becomes totally exhausted An improper time value affects no other functions but the date totalizer 51 8 Product Identification Each set of the LRF 2000H has a unique product identification or ESN written into the software that can only be modified with a special tool by the manufacturer In case of any hardware failure please provide this number which is located on menu window number M61 when contacting the manufacture 4 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement 51 9 Basic Technical Data Linearity 0 5 Pipe Size 15mm 6000mm Setup values Modification Lockout Access code nee
5. an issue for you you may select 20 4 20mA mode in M55 Then enter 500 in M56 and 1000 in M57 If flow direction is an issue you may select 0 4 20mA mode in M55 This means that the current loop will output 0 4 when flow rate is negative and 4 20mA when flow rate is positive Enter 500 in M56 and 1000 in M57 You may need to calibrate and test the current loop output before using it Just go to menu M58 and do the following First connect an ammeter to the current loop output Press 8 then to enter into menu M58 Use and to display AmA 8 16mA 20mA orderly record the corresponding reading on the ammeter Calculate the differences between the readings and the selected ones For instance when 4mA is selected the actual output current shown on the ammeter is 4 01mA Then the difference is 0 01 If the differences are not within tolerance calibrate the current loop The present current loop output is displayed in Window M59 It changes along with flow rate change 4 15 How to use the Frequency Output There is a Frequency Output in all LRF 2000 series flow meters This frequency output signal which represents the flow rate is intended to connect with other instruments The Frequency Output is totally user configurable Generally four parameters should be 26 Concentrating on Flow Measurement 4 LONGRUN www ultrasonicscn com a A a a configured for the setups Enter the lower flow
6. battery does not fit the battery estimating software Customizing the battery with the software should be taken Please contact the factory The battery has not been fully recharged or the recharge has been stopped too many times halfway There is indeed a time difference between the actual working time and the estimated one especially when the terminal voltage is in the range 3 70 and 3 90 volt Please refer to battery voltage for a closer estimated working time 39 4 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement 6 Communication Protocol 56 1 General The LRF 2000H ultrasonic flow meter integrates a standard RS 232 communication interface and a complete set of communication protocols that are compatible with that of the Fuji s ultrasonic flow meter 56 2 Interface Pin out Definition Pin for battery recharge positive input RXD TXD not used GND OCT output not used for battery recharge negative input RING input for connecting a MODEM WOON DD UW Q FE 6 3 the Protocol The protocol is comprised of a set of basic commands that is a string in ASCII format ending with a carriage CR and line feed LF Commonly used commands are listed in the following table Command Data Format DQD CR d ddddddE dd CR LF DQH CR d ddddddE dd CR LF DQM CR d ddddddE dd CR LF DQS CR d ddddddE dd CR LF DV CR d ddddddE dd CR LF DI CR dddddddE d CR LF DI CR
7. com ji s The flow measurement program always operates in the background of the user interface This means the flow measurement will keep on running regardless of any user menu window browsing or viewing Only when the user enters new pipe parameters will the flow meter change measurement to the new parameter changes When new pipe parameters have been entered or when the power has been just switched on the flow meter will enter an adjusting mode to make the signals magnified with proper amplification By this step the flow meter is going to find the best threshold of receiving signal The user will see the progress by the number 1 2 or 3 which are indicated on the right lower corner of the LCD display When the transducers have been adjusted on the pipe by the user the flow meter will re adjust the signal automatically Any user entered configuration value will be retained into the NVRAM of the flow meter until it is modified by the user 52 3 Keypad The keypad for the operation of the flow meter has 16 2 keys as shown by the right picture Keys 0 9 and are keys to enter numbers Key is the going UP key when the user wants to go to the upper menu window It also works as the key when entering numbers Key is the going DOWN key when the user wants to go down sided menu window It also works as the key when entering numbers Key lt is backspace key when the user wants go left or wants
8. dddddddE d CR LF DIN CR dddddddE d CR LF DID CR Return Identification Number ddddd CR LF DL CR Return signal strength and quality S ddd ddd Q dd CR LF DT CR Return date and time yy mm dd hh mm ss CR LF M CR Send a key value as if a key is pressed 40 4 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement LCD CR Return the current window display MEE FOdddd CR Force the FO output with a frequency in dddd Hz ESN CR Return the ESN for the instrument Dddddddd CR LF RING CR Handshaking Request by a MODEM OK CR Response from a MODEM GA Command for GSM messaging Please contact factory for detail GB Command for GSM messaging Command for GSM messaging __ DUMP CR Return the buffer content In ASCII string format DUMPO CR Clear the whole buffer In ASCII string format DUMP1 CR Return the whole buffer content In ASCII string Format 24KB in length Prefix before an Identification Number in a network environment The IDN is a word ranging 0 65534 Prefix before an Identification Number in a network environment The IDN is a single byte value ranging 00 255 Prefix before any command Command connector to make a longer command by combining up to 6 commands Notes CR stands for Carriage Return and LF for Line Feed d stands for the 0 9 digit numbers stands for the key value e g for the 0 key 6 4 Protocol Pre
9. method 1 Z method 2 N method 3 W method M27 Select YES or NO for the instrument to determine whether or not to hold or M28 to keep the last correct value when poor signal condition occurs YES is the default setup M29 Enter a value ranging from 000 to 999 0 is the default value Window for selecting unit system Default value is Metric The change from nod English to Metric or vice versa will not affect the unit for totalizers Window for selecting flow rate that will be used by the instrument afterward Flow rate can be in Cubic meter short for m3 Liter I USA gallon gal Imperial Gallon igl M31 Million USA gallon mgl Cubic feet cf USA liquid barrel bal Imperial liquid barrel ib Oil barrel ob The flow unit in terms of time can be per day per hour per minute or per second So there are 36 different flow rate units in total for selection The multiplier ranges from 0 001 to 10000 M34 M35 Turn on or turn off the POS totalizer M36 Turn on or turn off the NEG totalizer 1 Totalizer reset 2 Restore the instrument to the default parameters as the manufacturer did by pressing the dot key followed by the backspace key Take care or make note on the parameters before doing the restoration M38 Operational interface language selection in Chinese and English This M39 selection makes it possible that more than 2 billions of people on the world can read the menu Flow
10. rate value in window M68 and the higher flow rate value in window M69 Enter the frequency range in window M67 For example assume that the flow rate varies in a range Om h to 000 and an output signal is at a maximum frequency of 1000Hz the minimum of 200Hz is going to be required for other instrumentation The user should enter 0 in M68 and 3000 in M69 and enter 200 and 1000 in window M67 Please note that the user has to make the selection with OCT setups in window M78 4 16 How to use the Totalizer Pulse Output The totalizer output will produce a pulse output with every unit flow of the totalizer The totalizer pulse output can only be realized by mapping the pulse output to the OCT or BUZZER hardware devices For example assume that the POS totalizer pulse output is needed and every pulse should represent 0 1cubic meter of liquid flow the pulse output will be mapped to the internal Buzzer so that with every 0 1 cubic meter of flow the BUZZER will beep for a while The following setups should be taken performed Select the unit Cubic Meter under window M32 Select the Multiplier as 2 X0 1 under window M33 27 4 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement Select the output option 9 POS INT Pulse under window M77 INT stands for totalized 4 17 How to produce an alarm signal There are 2 types of hardware alarm signals that are available with this instrument One is the
11. to enter the window Notice the window will close after power off and the password will become invalid then Press keys 1 to adjust the 4mA current output use precision ammeter to measure the output current at the same time use to adjust the digital on the flow meter until the ammeter indicate 4 00 Then press to enter the window of adjusting the 20mA output When finished adjusting you have to use menu window 26 to store the result into the flash memory so that it will be solidified and will not be lost even the reserve battery removed 4 33 How to solidify the parameters There are three kinds of parameters for the new generation LRF TUC 2000 1 Current parameters the parameters are stored in the RAM They will be lost when one cut the power or remove the reserve battery 2 Solidified parameters you may use menu window 26 to store the parameters in the Flash memory and they will not be lost even power off This menu window is also a switch for the parameters in flash memory to be loaded when power is turned on The default option is that the parameters will be loaded So if the parameters are very stable you may need this option 3 User frequently used parameters you can use menu window 27 to store or restore from the internal Flash memory as many as 9 different pipe parameter configurations 4 34 How to enter the parameters of user type transducer If a user type transducer is selected in menu window 23 you need proce
12. use menu window 70 to setup the LCD display backlight and menu window 71to adjust contrast it 4 29 How to use RS232 RS485 Use menu window 62 to set up RS232 RS485 All the devices connected with flow meter should have matched serial configuration The following parameters can be configured Baud rate 300 to 19200 bps parity data bits always is 8 stop bits 1 4 30 How to use automatic amending function for offline compensation Use menu window 83 turn on or turn off this function When the function is enabled the flow meter will estimate the average flow uncounted or lost during the offline session and add the result to the totalizer This function is not recommended The user should manage to avoid the offline time to keep precision of the measurement result 4 31 How to use batch controller Please do the following to use the batch controller 1 Go to menu window 80 to select the trig signal 2 Go to menu window 78 OCT output or 79 relay output select 8 Batch Control 3 Use menu window 81 to set the flow batch value dose 32 Concentrating on Flow Measurement 72 LONGRUN www ultrasonicscn com ji rFphk IOO 4 32 How to adjust the analogue output We have adjusted every set of meter before delivery Unless you find the current indicated in menu 58 is different with the actual current output please do not do this operation Press keys MENU use the password 4213068
13. 31 4 27 How to output analogue voltage signal r 31 4 28 How to adjust the LCD 5 31 4 29 How to use RS232 RS485 cccccceceeccneecccuencceuneeccueaccauaneaeanseeaneaseunassauensanansas 32 4 30 How to use automatic amending function for offline compensation 32 4 31 How to use Datch u banane nid Ea atia d s fca sd 32 4 32 How to adjust the analogue output a mener 33 4 33 How to solidify the parameters 33 4 34 How to enter the parameters of user type transducer 33 4 35 How to use the circular display function eem 34 4 36 How to enter into the linearity correcting How to enter into the data 34 Concentrating on Flow Measurement 4 LONGRUN www ultrasonicscn com ee mm a 4 37 How to save restore frequently used pipe parameters 36 SN MOU CSO OUI Cea ETE TE T 37 85 1 Power on Error Displays and Counter Measures 37 85 2 Error Code and Counter Measures 37 985 3 Other Problems and Solutions r v ERO REF UO AINE 38 6 Communication PrOtOCOl ccccececececeeeeee
14. 4 Enter flow rate lower limit 1000 in M76 5 Select item 6 Alarm 1 in M78 6 Select item 6 Alarm 1 in M79 4 18 How to use the built in Buzzer The built in buzzer is user configurable It can be used as an alarm Use M77 for setups 4 19 How to use the OCT output The OCT output is user configurable which can be performed by selecting the proper input source such as pulse output Use M78 for the setups Please make sure that the Frequency Output shares the OCT The OCT output shares pins with the RS 232C interface and the terminal is at Pin 1 and 8 4 20 How to modify the built in calendar 29 472 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement No modification on the built in calendar will be needed in most cases The calendar runs on insignificant amount of power supply Modification will be required only in such cases as when the battery is totally consumed or when the changing of the battery takes a long time Press the ENT key under M60 for Modification Use the dot key to skip over these digits that need no modification 4 21 How to view the Date Totalizers Use M82 to view the date totalizers that are comprised of a daily totalizer a monthly totalizer and a yearly totalizer 4 22 How to use the Working Timer Use the working timer to check the time that has passed with a certain kind of operation For example use it as a timer to show how long a fully charged battery will la
15. 549 6 553 6 9 1432 34 15177 59 15503 84 15532 10 14472 35 15197 60 15509 85 1552 8 11 14511 36 15217 61 15515 86 15524 1552 0 1551 5 14 14623 39 15071 64 15530 89 15510 15 1465 8 40 15288 65 15534 90 15504 16 14693 4i 15304 6 15537 91 15408 18 14760 43 15335 6B 15543 93 15485 19 14791 44 15349 69 15545 94 15475 15471 21 14853 46 15377 71 15549 96 15463 23 14911 15402 73 15550 98 15447 _ 24 14939 49 154 3 74 15551 99 15439 _ 45 4 LONGRU www ultrasonicscn com Concentrating on Flow Measurement INDUSTRIAL I NSTUMENT CO LTD 24 hours service 86 186 5435 6933 Tel 86 543 3611555 Fax 86 543 3615999 E mail info ultrasonicscn com skype Longruncn Website www ultrasonicscn com Add No 584 Huanghe Er Lu Binzhou Shandong province China P C 256600 46
16. Handheld Ultrasonic Flow meter User Manual ULTRASONIC FLOWMETER 4 LONGRUN I NDUSTRI AL INSTRUMENT CO LTD LOTIGRUT Concentrating on Flow Measurement 72 LONGRUN www ultrasonicscn com a Concentrating on Flow Measurement Contents PR MUO CCIM ERE 1 IT i e E MEE UE 1 Fee OS ta rence taneous racine ES 1 61 3 Principle of Measurement eese nennen nenne nennen nnn nns 2 51 4 Packing List Standard Configuration r 2 dn Mc 3 SL 4 51 7 Data Integrity and Built in Time Keeper een mmm 4 51 8 Product Identification cccccccccveueueveucuevevauavevavavavavavavavavavavavavavavevauanevenanenesas 4 51 9 Basic Technical 2 5 2 Sl lh Pi o E 0 0 EISE 6 uuu u E 6 ZZ TOWEL O uuu ss 6 PE y u A 7 B2 JN MOI a Due bru 7 82 5 Steps to Configure the 8 82 6 Transducers Mounting Allocation mmm 10 82 7 Transducers Installation ccccscecevevecevavevevavavavaeavavacaeueauaueeauaeaeaeauaeeeananeeananes 11 52 7 1 Transducers
17. O9 press a number key the user will go directly to the window For example if the current window displays M01 press 7 9 Concentrating on Flow Measurement 4 LONGRUN www ultrasonicscn com jw aN kk Tu T t IA Yr and the user will go to M07 2 When the window display is under M00 to M09 press the ENT key and the user will go to M90 press ENT key to return Press the dot key to go to M11 3 When the window display is under M25 press ENT key to go to M01 82 6 Transducers Mounting Allocation The first step in the installation process is the selection of an optimum location in order to obtain a more accurate measurement For this to be completed effectively a basic knowledge about the piping and its plumbing system would be advisable An optimum location would be defined as a straight pipe length full of liquid that is to be measured The piping can be in vertical or horizontal position The following table shows Upstream Downstream Piping Gonfiguration Dimension Dimension and L up L dn Transducer Position x Diameters x Diameters L up L dn i ph 10D 5D c J ds r7 5 i L u
18. RUN www ultrasonicscn com j i a L 4 13 How to use the system locker The system locker provides a means of preventing inadvertent configuration changes or totalizer resets When the system is locked menu window browsing can be done without affecting any change but any modifications are prohibited The system can be locked without a password or with a 1 to 4 digit password With a no password locking directly press the ENT key in M47 If the password is forgotten please contact the factory 4 14 How to use 4 20mA current loop output The accuracy of the current loop output is better than 0 1 It can be configured to different mode such as 4 20mA mode 0 20mA etc Mode selection can be made in menu M55 Refer to the next chapter for details on M55 In order to use the 4 20mA output function you need not only select the mode to be 4 20mA M55 but also set the flow rate values which correspond to the minimum current 4mA and the maximum current 20mA Enter the two values in M56 and M57 Example A flow rate range is 0 500m h Just enter 0 in M56 and 500 in M57 25 4 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement J wa lt ww ur rr nA r n EiT r t Example B flow rate range is 500 0 1000m h If flow direction is not
19. als by a 3 digit number 000 means there is no signal detected and 999 refers to the maximum signal strength that can be received Although the instrument works well if the signal strength ranges from 500 to 999 stronger Signal strength should be pursued because a stronger signal means a better result The following methods are recommended to obtain stronger signals 1 Relocate a more favorable location if the current location is not good enough for a stable and reliable flow reading or if the signal strength is lower than 700 2 Try to polish the outer surface of the pipe and apply more coupler to increase the signal strength 3 Adjust the transducers both vertically and horizontally while checking the varying signal 13 4 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement strength stop at the highest position and then check the transducers spacing to make sure the transducers spacing is the same as what the M25 shows 52 8 2 Signal Quality Signal quality is indicated as the Q value in the instrument A higher Q value would mean a higher Signal and Noise Ratio short for SNR and accordingly a higher degree of accuracy would be achieved Under normal pipe condition the Q value is in the range 600 900 the higher the better Causes for a lower Q value could be 1 Interference of other instruments and devices such as a powerful transverter working nearby Try to relocate the flow meter to a ne
20. backspace the left character that is located to the left of the cursor Key the ENTER key for any inputting or selections Key is the key for the direct menu window jump over Whenever the user wants to proceed to a certain menu window the user can press this key followed by 2 digit numbers The key is shortened as the M key afterward when referring to the menu windows The ON key is for the power on The key is for the power off 52 4 Menu Windows The user interface of this flow meter comprises about 100 different menu windows that are 4 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement numbered by MOO M01 M02 M99 There are 2 methods to enter certain menu window 1 Direct going entering The user can press the key followed by two digit number keys For example the menu window M11 is for the entering of pipe outer diameter The display will go to the M11 menu window after the user presses 1 2 Pressing and keys Each time of the key pressing will proceed to the Lower numbered menu window For example if the current window is on M12 the display will go to the number M11 window after pressing the key There are three different types of menu windows 1 Menu windows for number entering like M11 for the entering of pipe outer diameter 2 Menu windows for option selection selecting options like M14 for the selection of pipe materials 3 Displaying windows only like to d
21. d show value 34 72 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement In order to revised the flow exceed the scope of the above table without mutations of correction factor we add two points on the basis of the above five points 0 m h 1 0 and 100000 m h 1 0 0 m h 1 0 is called the minimum flow of the amendment point this set of data is used to facilitate to generated a appropriate correction factor when Instrumented show flow under 1 02 m h 100000 m h 1 0 is called the maximum flow of the amendment point this set of data is used to facilitate to generated a appropriate correction factor when Instrumented show flow above 50 56 m h So that we get the following data sets from small to large 0 I 1 0 0998 1 02 5 505 0 93 10 85 0 95 19 78 1 03 51 23 0 99 100000 1 The total is seven sets of data The next step is to put seven sets of data entered into the Instrument Pay attention to the input order in accordance with from small to large To enter the menu M48 then input the data set number 7 to be followed in the above seven sets of data we revised the setup of a multi segment linearity correcting If you need to cancel linearity correcting simply enter 0 in the menu M48 35 4 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement Decommissioned linearity correcting you just need to enter in the menu M48 da
22. disappear If you do not use frequency output you may ignore this error If an H flashes on that place there could be poor signal received Please refer to the chapters on diagnosis If G is displayed the flow meter is adjusting system gain This is normal as far as it does not last long time If an T is displayed it means that there is no signal detected If J is displayed there is hardware problem Turn off the power then turn on the power again If the problem remains refer to Chapter 5 for diagnosis details 4 2 How to judge the liquid flowing direction 21 72 LONGRUN www ultrasonicscn com j upp a a OO sI FPTII Concentrating on Flow Measurement Make sure that the instrument works properly Check the flow rate for the indication If the displayed value is POSITIVE the direction of the flow will be from the A transducers to the B transducers if the displayed value is NEGATIVE the direction will be from the B transducers to the A transducers 4 3 How to change between units systems Use menu window M30 for the selection of unit system in English or Metric system 4 4 How to select a required flow rate unit Use menu window M31 to select the flow unit first and then the timing unit 4 5 How to use the totalizer multiplier Use window M33 to select a proper totalizer Make sure that the totalizer pulse is appropriately speeded It should not be too fast and neither too slow A speed of producing a pu
23. ds Security unlocking Display 4x8 Chinese characters or 4x16 English letters RS 232 baud rate from 75 to 57600 Protocol made by the Communication manufacturer and compatible with that of the FUJI ultrasonic Interface flow meter User protocols be made by user requirements Standard 5m x 2 optional 10m x 2 Length 3 AAA built in Ni H batteries When fully recharged it will last Power Supply over 12 hours of operation 100V 240VAC for the charger 7 digit press key to go totalizer for calibration ABS 210x90x30mm Main unit Weight 500g with batteries Concentrating on Flow Measurement 4 LONGRUN www ultrasonicscn com 2 Starting Measurement 2 1 Built in Battery The instrument can operate either from the built in Ni H rechargeable battery which will last over 12 hours of continuous operation when fully recharged or from an external AC power supply from the battery charger The battery charging circuits employ a scheme of constant current and constant voltage It has a characteristic of fast charging at the beginning and very slow charging when the battery approaches to full recharge Generally when the green LED starts coming on the battery would be nearly 95 recharged and when the red LED is off the battery would be 98 recharged Since the charging current becomes tapered when the battery recharge is nearly completed i e the charging current becomes smaller and smaller t
24. ed to enter 33 4 LONGRUN www ultrasonicscn com ee cA eS Concentrating on Flow Measurement additional 4 user type wedge parameters that describe the user transducers If the PI type transducer is selected you need enter additional 4 PI type transducer parameters that describe the PI type transducers 4 35 How to use the circular display function When entering menu window 95 the circular display function will be started automatically The following windows will be displayed one by one each window will stay for 8 seconds M95 gt gt M00 gt gt M01 gt gt M02 gt gt M02 gt gt M03 gt gt M04 gt gt M05 gt gt M06 gt gt M07 gt gt M08 gt gt M90 gt gt M91 gt gt M92 gt gt M93 gt gt M94 gt gt M95 This function allows the user to visit all the important information without any manual action To stop this function simply press a key Or switch to a window other than M95 4 36 How to enter into the linearity correcting How to enter into the data When the product leaved the factory the function is closed The menu can realize almost 12 parts linearity correcting The user can choose from two points to twelve points to execute the linearity correcting according to user actual condition In order to explain the usage method of the menu we suppose that we get the following table data through calibration the meter Reference standard Instrumented show Correction coefficient equipment flow m h flow m h standar
25. er version users with this flow meter series 3 2 Menu Window Details Menu window Function No Moo Display three positive negative net totalizers signal strength signal quality and working status Display POS totalizer flow rate velocity signal strength signal quality working status MO Display NEG totalizer flow rate velocity signal strength signal quality and working status MO MO working status M Display date and time flow rate signal strength signal quality and working 1 2 Display NET totalizer flow rate velocity signal strength signal quality and 4 15 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement Display date and time velocity signal strength signal quality and working Status Display today s total flow velocity signal strength signal quality and working status 0 to 6000mm is the allowed range of the value Window for selecting pipe material Standard pipe materials that the user need not know the speed include M14 0 carbon steel 1 stainless steel 2 cast iron 3 ductile iron 4 copper 5 PVC 6 aluminum 7 asbestos 8 fiberglass M15 Window for entering the pipe material speed only for non standard pipe materials Window for selecting the liner material select none for pipes without any liner Standard liner materials that the user need not know the speed include 1 Tar Epoxy 2 Rubber 3 Mortar 4
26. ficult to perform field maintenance Before sending back the instrument please try to contact the factory first to make sure what the problem is 2 For other operational problems please contact our service department by telephone fax or email and internet In most cases the problem could be solved immediately 7 2 Software Upgrade Service We provide free of charge software upgrade services Please contact the factory for any lately developed software 43 Concentrating on Flow Measurement Appendix 1 Sound speed data of liquid unit m s 4 LONGRUN www ultrasonicscn com 1250 1171 1139 1385 1330 1340 1170 938 1420 1290 1280 1050 1502 1620 1472 Sound speed 1482 Nater 50 1543 Water 75 1554 ate NC 1543 Water 125 1511 1466 Water 175 C _ 1401 Nater 200 1333 1249 Water 250 1156 Aceton 1190 1121 1168 1440 1310 1180 2 Sound speed data of solid unit m s Sound speed Sound speed 3206 2286 3048 2270 2460 2270 3430 3276 1950 2540 1600 Note Please contact with the manufacturer for other sound speed data 44 Concentrating on Flow Measurement 4 LONGRUN www ultrasonicscn com 3 Sound speed in water at atmosphere pressure Unit t Deg C v m s o 14023 25 1496 6 50 15425 75 1555 1 _ _5 14261 30 1509 0 55 15473 80 15544 _ 6 14305 31 15113 56 15481 81 1554 2 553 9 8 14391 33 15157 58 1
27. fix Usage 1 Prefix P The prefix P can be added before any command in the above table to have the returning data followed with two bytes of CRC check sum which is the adding sum of the original character string Take the DI CR command as an example Assume that DI CR would return 1234567E 0m3 CR LF the string in hexadecimal is 2BH 31H 32H 33H 34H 35H 36H 37H 45H 2BH 30H 6DH 33H 20H ODH OAH then PDI CR would return 41 4 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement j wa 1234567E 0m3 F7 CR LF acts as the starter of check sum which is yielded by adding up the string 2BH 31H 32H 33H 34H 35H 36H 37H 45H 2BH 30H 6DH 33H 20H Please note that there will be SPACES 20H before 2 Prefix W The prefix W should be used in the network environment The usage format is W digit string which stands for the IDN basic command The digit string should have a value between 0 and 65534 except 13 0DH 10 OAH 42 2AH 38 26H amp For example if the IDN 12345 instrument is addressed and returning the velocity of that instrument is requested the command will be W12345DV CR 3 Prefix N The prefix N is a single byte IDN network prefix not recommended in a new design It is reserved only for the purpose of the compatibility with the former versions 4 Command Connector amp The amp command connector can connect up to 6 basic command
28. herefore there should be no over recharging problem That means the charging progress can last very long The charger can be connected to the handset all the time when an around the clock measurement is required When fully recharged the terminal voltage reaches around 4 25V The terminal voltage is displayed on window M07 When the battery is nearly consumed the battery voltage drops to below 3V The user can obtain an approximate battery working time from the battery voltage A software battery working time estimator is integrated in this instrument based on the terminal voltage Please note that the estimator may have relatively bigger errors in the estimated working time especially when the voltage is in the range of around 3 70 to 3 90 volt 2 2 Power On Press the key to switch on the instrument and press the to turn off the power Once the flow meter is switched on it will run a self diagnostic program checking first the hardware and then the software integrity If there is any abnormality corresponding error messages will display Generally there should be no display of error messages and the flow meter will go to the most commonly used Menu Window Number 01 short for M01 to display the Velocity Flow Rate Positive Totalizer Signal Strength and Signal Quality based on the pipe parameters configured last time by the user or by the initial program Concentrating on Flow Measurement 4 LONGRUN www ultrasonicscn
29. ing and the small signal receiving circuits etc The main improvements are made on the battery supply circuit and on the transmitting circuits All other circuits are simply integrated into this new version without major modifications due to the fact that we have already applied the most advanced measurement technologies and attained a more reliable model of ultrasonic flow meter LRF 2000H flow meter incorporates the latest ICs manufactured from the famous semiconductor manufacturers like Philips Maxim TI Win bond and Xilinx The hardware features the ease of operation high accuracy and outstanding reliability while the software provides a very friendly user interface and much more functions It employs a patent balanced lower voltage multi pulse igniting circuit which increases the anti interference ability magnificently so that the flow meter will work properly even in demanding industrial environments such as those with power frequency transverter working nearby Other outstanding features the signal receiving circuits feature self adapting performance so as to ensure that the user can easily operate the instrument without any adjustment the built in rechargeable Ni MH battery can work continuously for more than 12 hours without recharging The advanced circuit design the integration of the latest semiconductors the user friendly software interface both in English and Chinese languages and small sized PCB board all these feat
30. isplay Velocity Flow Rate etc For number entering windows the user can directly press the starting digit key when the user is going to modify the value For example when the current window is on M11 and the user is going to enter 219 2345 as the pipe outer diameter the user can get the numbers entered by pressing the following serial keys 9 ENT For the option selection windows the user should first press the ENT to a selection modification mode and then select the relevant options by pressing the and keys or the digit keys to select the option with a number antecedent to the option In the end the key must be pressed to make the selection For example with menu window M14 for the selection of pipe material selection the should be pressed first to enter this menu window if the current menu window is on a different window The pipe material is stainless steel which has a number 1 antecedent to stainless steel on the display the user should first press the key to enter into a selection modification mode then either make the selection by pressing the and keys to make the cursor on the line that displays 1 Stainless Steel or make the selection by pressing the 1 key directly Generally the key must be pressed to enter a modification mode If the Locked M47 Open message is indicated on the lowest line of the LCD display it means the modification operations is locked out In such cases the user sho
31. lse in several seconds or minutes is preferable If the totalizer multiplier is too small there can be a loss of accumulation pulse because the output device can output only one pulse in a measurement period 500milliseconds If the totalizer multiplier is too large the output pulse will be too fewer for the devices that are connected with the instrument for a quicker response 22 4 LONGRUN www ultrasonicscn com a r nT m T K d I Concentrating on Flow Measurement 4 6 How to open or shut the totalizers Use M34 M35 and M36 to turn on or turn off the POS NEG or NET totalizer respectively 4 7 How to reset the totalizers Use M37 to reset the proper totalizer 4 8 How to restore the flow meter with default setups Use M37 when the selection message is displayed Press the dot key first and the message Master Erase will display then press the backspace key lt The master erase step will erase all the parameters entered by the user and setup the instrument with default values except instrument factor and network identification number parameter 4 9 How to use the damper The damper acts as a filter for a stable reading If 0 is entered in window M40 that means there is no damping A bigger number brings a more stable effect But bigger damper numbers will prevent the instrument from acting quickly Numbers 0 to 30 are commonly used for the damper value Default value is 10 second
32. ly measurement with pipe inner diameters ranging from 15 mm to 200 mm It is also called reflective mode 11 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement Upstream Transducer emm 48 gt sy Downstream Transducer Z E D Transducers Spacing 62 7 3 Z method Installation Z method is commonly used when the pipe diameter is above 200mm 2 ae gt LT Rn LLL LLL LLL LIL LLL Transducers EJ a et WE Downstream Transducer NO V i 2 7 4 W method Installation Concentrating on Flow Measurement 4 LONGRUN www ultrasonicscn com Esa AT UCR a SS US a V W method is usually used on plastic pipes with a diameter from 15mm to 50mm Downstream Transducer Kk Upstream Transducer amm lt A y Transducers Spacing lt 2 7 5 N method Installation Rarely used method 2 8 Installation Checkup Through the checkup of the installation one can check the receiving signal strength the signal quality Q value the traveling time difference of the signals the estimated liquid speed the measured traveling time of the signals and the calculated traveling time ratio Therefore optimum measurement result and longer running time of the instrument can be achieved 2 8 1 Signal Strength Signal strength indicates the amplitude of receiving ultrasonic sign
33. memory Buffer transferring and buffer clearing Logger buffer viewer It functions as a file editor Use Dot backspace UP and M53 DN keys to browse the buffer If the logger is ON the viewer will automatically refresh once new data are stored 99 year calendar Press ENT for modification Use the dot key to skip the digits that need no adjusting Display Version information and Electronic Serial Number ESN that are M61 unique for each LRF 2000 series flow meter The users can employ the ESN for instrumentation management M62 RS 232 setup Baud rate can be 75 to 115200 bps M63 18 M54 M55 M56 M57 M58 M59 60 M 4 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement M67 Input the frequency range for the frequency output The biggest range is 0Hz 9999Hz Default value is 1 1001 Hz M68 Enter a flow rate value that corresponds to lower frequency M69 Enter a flow Rate value that corresponds to higher frequency LCD display backlight control The entered value indicates how many seconds the backlight will be on with every key pressing M71 LCD contrast control The LCD will become darker when a small value is entered M72 Working timer It can be cleared by pressing ENT key and then select YES Enter Lower Flow Rate value that will trigger the 1 Alarm There are two virtual alarms in the system By virtual we mean that the user must redirect the output of the alarms by setuping the output ha
34. mitting and receiving ultrasonic signals through the wall of liquid piping system The measurement is realized by measuring the traveling time difference of the ultrasonic signals Since the difference is very small the Spacing and the alignment of the transducers are critical factors to the accuracy of the measurement and the performance of the system Meticulous care should be taken for the installation of the transducers Steps to the installation of the transducers 1 Locate an optimum position where the straight pipe length is sufficient and where pipes are in a favorable condition e g newer pipes with no rust and ease of operation 2 Clean any dust and rust For a better result polishing the pipe with a sander is strongly recommended 3 Apply adequate coupler to the spot where the transducers are to be installed and leave no gap between the pipe surface and the transducers Extra care should be taken to avoid any sand or dust particles left between the pipe outer surface and the transducers To avoid gas bubbles inside the upper part of the pipe the transducers should be installed horizontally by the side of the pipe 52 7 1 Transducers Spacing The spacing value shown on menu window M25 refers to the distance of inner spacing between the two transducers The actual transducers spacing should be as close as possible to the spacing value 2 7 2 V method Installation V method installation is the most widely mode for dai
35. ower on again 2 Permanent problems with hardware Instrument 15 in the progress of adjusting the Adjusting Gain gain for the signal and the number indicates the progressive steps 2 contact factory 1 Relocate where the pipe is full of liquid 2 Enter 0 on M29 1 No liquid inside pipe EMPEY Pine 2 Setup error on M29 5 3 Other Problems and Solutions 1 When the actual flow inside the pipe is not standstill but the instrument displays 0 0000 for the flow rate and R displaying signal strength and the signal quality value has a satisfactory value The problems are likely caused by the user who has used the Set Zero function on this non standstill flowing pipe To solve this problem use the Reset Zero function on menu window M43 2 The displayed flow rate is much lower or much higher than the actual flow rate in the pipe under normal working conditions a There is probably an offset value wrongly entered by the user in M44 Enter 0 in M44 b Problem with transducer installation c There is a Zero Point Try to zero the instrument by using M42 and make sure that the flow inside the pipe should be standstill 3 The battery can not work as long as the time period as indicated by M07 38 22 b 9 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement Battery should be replaced due to the end of the service life Newly changed
36. p L dn I L up 12D 5D 2 L up cii 20D 5D L up L dn e lt 20D 5D J L up L dn SL N T Z i 30D 5D Examples of optimum locations Principles to selection of an optimum location 1 Install the transducers on a longer length of the straight pipe The longer the better and make sure that the pipe is completely full of liquid 2 Make sure that the temperature on the location does not exceed the range for the transducers Generally speaking the closer to the room temperature the better 3 Take the pipe fouling into consideration Select a straight length of a relatively newer pipe If the condition is not satisfying consider the fouling thickness as part of the liner for a better result 10 72 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement EG BS ua Fi 4 Some pipes have a kind of plastic liner and between the outer pipe and the liner there may be a certain thickness difference that will prevent the ultrasonic waves from direct traveling Such conditions will make the measurement very difficult Whenever possible try to avoid this kind of pipes If impossible try our plug in transducers that are installed permanently on the pipe by drilling holes on the pipe while liquid is running inside 52 7 Transducers Installation The transducers used by the LRF 2000 series ultrasonic flow meter are made of piezoelectric crystals ceramic plate both for trans
37. rameters entered by the user either to the built in data logger or to RS 232C serial interface Command to record the diagnostic information either to the built in data logger or to RS 232C serial interface Command to copy the current display either to the built in data logger or to RS 232C serial interface Browse the 64 recorded instrument power on and power off date and time with the flow rate at the time of power on and off M 1 Displays the total working time of the instrument M 2 Displays the last power off date and time M 3 4 M97 M98 M99 Displays the last power off flow rate Displays the times of instrument powered on the instrument has been powered on A scientific calculator for the convenience of field working M 5 All the values are in single accuracy The drawback is that the user can t operate it by direct key pressing M 6 M 7 M 20 4 LONGRUN www ultrasonicscn com ji A ue Concentrating on Flow Measurement 4 How To 4 1 How to judge if the instrument works properly Enter into M08 if R is displayed on the screen the instrument is working properly If E is displayed the current loop output is over ranged Increasing the range setting in M57 will make the E letter disappear If you do not use current loop output you may ignore this error If Q is displayed the frequency output is over ranged Increasing the range setting in M69 will make the Q letter
38. rate damper for a stable value The input range is 0 to 999 seconds M40 means there is no damping Default value is 10 seconds 17 CON QJ NN M32 33 M37 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement Lower flow rate cut off to avoid invalid accumulation Zero point setup under the condition when there is no liquid running inside the pipe Clear the zero point set by the user and restore the zero point set by the factory Set up a manual flow bias Generally this value should be 0 Scale factor for the instrument The default value is 1 Keep this value as 1 when no user calibration has been made Network environment Identification Number Any integer can be entered except 13 0DH carriage return 10 OAH line feeding 42 2AH 38 M46 65535 Every set of the instrument in a network environment should have a unique IDN Please refer to the chapter for communication M47 System locker to avoid modification of the parameters M48 M49 41 42 M43 M44 M45 Communication tester Option selection for the built in logger It also functions as the switch of logger M51 1 Data logging direction control If To RS 232 is selected all the data produced by the data logger will be transmitted out through the RS 232 interface Ul Hoe If To buffer is selected the data will be stored into the built in logger
39. rdware in M78 and M77 M74 Enter the higher flow rate value that will trigger the 1 Alarm M75 Enter the lower flow rate value that will trigger the 2 Alarm M76 Enter the higher flow rate value that will trigger the 2 Alarm Buzzer setup M77 If a proper input source is selected the buzzer will beep when the trigger event occurs OCT Open Collect Transistor Output setup M78 By selecting a proper input source the OCT hardware will close when the trigger event occurs M79 Work as a keypad and display for another handheld set by RS 232 connected M80 with the handset M81 M82 M83 M84 M85 86 M87 M88 89 M90 Display signal strength signal quality time ratio on the upper right corner Displays the Time Ratio between the Measured Total Transit Time and the M91 Calculated time If the pipe parameters are entered correctly and the M70 M73 lt transducers are properly installed the ratio value should be in the range of 72 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement NEN 1002x396 Otherwise the entered parameters and the transducer installation should be checked Displays the estimated fluid sound velocity If this value has an obvious M92 difference with the actual fluid sound speed pipe parameters entered and the transducer installation should be checked again M94 Displays the Reynolds number and the pipe factor used by the flow rate program Command to record the pipe pa
40. s 23 Concentrating on Flow Measurement 4 LONGRUN www ultrasonicscn com ee ki gu 4 10 How to use the zero cutoff function The number displayed in window M41 is called the lower flow rate cut off value The flow meter will replace these flow rate values that are absolutely less than the low cutoff value with 0 This means the flow meter will avoid any invalid accumulation when the actual flow is below the zero cutoff value Generally the default value is 0 03m s The low cutoff value does not affect the flow measurement when the actual flow is absolutely greater than the low cutoff value 4 11 How to setup a zero point There exists a Zero Point with certain installation which means the flow meter will display a non zero value when the flow is absolutely stopped In this case setting a zero point with the function in window M42 will bring a more accurate measurement result Make sure that there is no liquid running inside the pipe and then run the function in window M42 by pressing the key 4 12 How to get a scale factor for calibration A scale factor is the ratio between the actual flow rate and the indicated value by the flow meter It can be determined by calibration with standard flow calibration equipment You may change the scale factor in menu window M45 The scale factor can be determined by calibration with flow calibration equipment 24 Concentrating on Flow Measurement 4 LONG
41. s to form a longer command so that it will make the programming much easier For example assume that the measurement of an instrument with IDN 4321 are going to be returned and then all the following 3 values 1 flow rate 2 velocity 3 POS totalizer will be returned simultaneously The combined command would W4321DQD amp DV amp DI CR and the result would be 1 234567E 12m3 d CR 3 1235926E 00m s CR 1234567E 0m3 CR 6 5 Codes for the Keypad The codes for the keypad should be used when the instrument is connected with other terminals that operate the instrument by transmitting the M command along with the keypad code By this function remote operation of this instrument can be realized even via the Internet Hexadecim Decima Hexadecima Decimal al Key 8 38 56 8 9 3H 5 9 o 3H 58 lt 3HOH 59 _ MENU 3CHOCH 60 lt ENT 3DHODH 61 Concentrating on Flow Measurement 4 LONGRUN www ultrasonicscn com em a SS 7 Service 67 1 Service The manufacturer provides instrument installation for our customers and the charges will be made according the cost 1 For any hardware failure of the instrument we recommend that our customers send back the instrument to our factory for service due to the fact that the instrument is made of microprocessors and it will be dif
42. st Under M72 press ENT key and then select YES to reset the timer 4 23 How to use the manual totalizer Use M38 for the manual totalizer Press ENT key to start and stop the totalizer 4 24 How to know how long the battery will last Use 7 to check how long the battery will last Also please refer to 8 2 1 30 Concentrating on Flow Measurement 4 LONGRUN www ultrasonicscn com 4 25 How to check the ESN and other minor details Every set of the LRF 2000S flow meter utilizes a unique ESN to identify the meter The ESN is an 8 digit number that provides the information of version and manufacturing date The user can also employ the ESN for instrumentation management The ESN is displayed in window M61 Other details about the instrument are the total working hours displayed in window M 1 and the total power on times displayed in window 4 4 26 How to use the data logger for scheduled output Use menu window 51 to setup the time of scheduled output including start time time interval and how many times of output Then use menu window 50 to turn on data logger and select the items you want to output 4 27 How to output analogue voltage signal Parallel a 2500 resistance to the terminal of the Current loop output No 21 22 then you can change the 4 20mA output to analogue voltage output 4 28 How to adjust the LCD display 31 4 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement You may
43. st of sound energy between the two transducers and measuring the transit time that it takes for sound to travel between the two transducers The difference in the transit time measured is directly and exactly related to the velocity of the liquid in the pipe show as follows Downstream transducer MD AT 1120 T eT Own Upstream transducer Lut Where 8 is the include angle to the flow direction M is the travel times of the ultrasonic beam D is the pipe diameter Tup is the time for the beam from upstream transducer to the downstream one Tdown is the time for the beam from downstream transducer to the upstream one AT Tup Tdown 1 4 Packing List Standard Configuration Check up the packing list carefully before installing 4 LONGRUN www ultrasonicscn com a Ima a sir ns I ts Concentrating on Flow Measurement Name QTY pcs Coupling agent 1 5 Front view Concentrating on Flow Measurement 4 LONGRUN www ultrasonicscn com j ml as Ga gS 1 6 Typical Applications The LRF 2000H flow meter can be virtually applied to a wide range of measurements A variety of liquid applications can be accommodated ultra pure liquids potable water chemicals raw sewage reclaimed water cooling water river water plant effluent etc Because the instrument and transducers are non contacting and have no moving parts the flow meter can not be affected by system pressure fouling or wear
44. t the totalizers 23 4 8 How to restore the flow meter with default setups 23 4 9 How to use the damper 23 4 10 How to use the zero cutoff function sese 24 4 11 How to setup a zero 24 4 12 How to get a scale factor for calibration 24 4 13 How to use the system 0 25 4 14 How to use 4 20mA current loop 25 4 15 How to use the Frequency Output 26 4 16 How to use the Totalizer Pulse Output mmm 27 4 18 How to use the built in 77 29 4 19 How to use the OCT 29 4 20 How to modify the built in calendar 29 4 21 How to view the Date TotaliZers ccccccscssccueueveucueuauevevauavevavavavavavavavavavarars 30 4 22 How to use the Working Timer 30 4 23 How to use the manual totalizer eee 30 4 24 How to know how long the battery will last 30 4 25 How to check the ESN and other minor detail 31 4 26 How to use the data logger for scheduled output
45. ta points in this case is 7 Noted before the calibration of the instrument you must first close the linearity correcting function If under the condition that the linearity correcting function has not closed the calibration data sets arising from the amendment must be dealing with the reverse curve of the data following the original amendment then input to the Instrument Reverse amendment is very complicated and should be avoided 4 37 How to save restore frequently used pipe parameters You can use menu window 27 to store or restore from the internal Flash memory as many as 9 different pipe parameter configurations 36 72 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement 5 Troubleshooting 5 1 Power on Error Displays and Counter Measures The LRF 2000H ultrasonic flow meter provides an automatic power on diagnosis for the hardware problems When any message with the power on in the following table displays counter measures should be taken Error message Causes Counter measures ROM Testing Error 1 Power on again Segment Test Error T 2 Contact with factory When this message displays the he parameters entered by the user should press ENT key and all Stored Data Error user lose integration the configuration will be restored to the default state Timer Slow Error Problem with the timer keeper Timer Fast Error or the crystal oscillator 2 Contact with fac
46. tory Number errors with the Initialize the calendar by menu alendar window M61 Reboot repetitively Hardware problems Contact the factory Date Time Error 5 2 Error Code and Counter Measures The LRF 2000H ultrasonic flow meter will show Error Code in the lower right corner with a single letter like etc on menu windows MOO M01 M02 M90 and M08 When any abnormal Error Code shows counter measures should be taken Correspondent Message Causes Counter measures displayed on M08 1 No Signals detected 2 Transducers installed improperly Detect No Signal 3 Too much fouling 4 Pipe liners are too thick 5 Transducer cords are not properly connected Hardware problem Contact the factory 1 Relocate measuring location 2 Clean the spot 3 Check the cords 37 72 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement 1 Poor signal detected 2 Transducers installed improperly 1 Relocate measuring place 3 Too much fouling 2 Clean the spot 4 The pipe liners are too 3 Check the cords thick 4 Check the coupler 5 Problem with transducers cords The actual frequency for Check the value entered at the Frequency Output is M66 M67 M68 and M69 and out of the range set by try to enter a larger value on the user M69 1 Temporary problems with RAM RTC PoorSig Detected Frequ OutputOver System RAM Error Date Time Error CPU or IRQ Error ROM Parity Error 1 p
47. trating on Flow Measurement 4 LONGRUN www ultrasonicscn com 3 Menu Window Details 3 1 Menu Windows Arrangement 00 09 windows for the display of the flow rate velocity date time totalizers battery voltage and estimated working hours for the battery M10 M29 windows for entering the pipe parameter M30 M38 windows for flow rate unit selections and totalizer unit selections M40 M49 windows for response time zeroing calibration and modification password setup M50 M53 windows for the built in logger M60 M78 windows for time keeper initialization version and ESN information viewing and alarms M82 window for viewing date totalizer M90 M94 are diagnostic windows for a more accurate measurement M97 M99 are not windows but commands for the outputting of display copying and pipe parameter setups M 0O M 8 are windows for some additional functions including a scientific calculator viewer on records such as total working hours turn on and turn off times dates and times when the flow meter has been turned on or turned off Other menu windows such as M88 have no functions or functions were cancelled because they are not applied to this version of the software The major reason why the menu windows are arranged in this way is that the software programmer hopes that the menu window arrangement for this version can be compatibility with the previous versions of the flow meter software This will make it easier for the form
48. ueeeeeueueueusueueueuaueueuauauauauausvavavavararavavarararass 40 UTE 40 56 2 Interface Pin out Definition 40 so RE 40 86 4 Protocol Prefix 41 56 5 Codes for TNE Gnd Di cada dad 42 Fo 43 SUNT m 43 67 2 Software Upgrade Service 43 Su u u u VERSIONE EIC ee eer tee NADIE 44 1 Sound speed data of liquid unit 5 44 2 Sound speed data of solid unit 5 44 3 Sound speed in water at atmosphere pressure 45 Concentrating on Flow Measurement 4 LONGRUN www ultrasonicscn com 1 Introduction 1 1 Preface Welcome to the LRF 2000H ultrasonic flow meter that has been manufactured with patent technologies and is equipped with more functions and advanced performance than our previous versions The ultrasonic flow meter has been upgraded based on the previous ultrasonic flow meter which is still the main product line of the company The new Version retains most of the excellent features and functions of the previous versions the pulse measurement technology the ultrasonic ignit
49. uld go to M47 to have the instrument unlocked first before any further modification can be made 2 5 Steps to Configure the Parameters The following parameters need to be configured for a proper measurement 1 Pipe outer diameter 2 Pipe wall thickness 4 LONGRUN www ultrasonicscn com Concentrating on Flow Measurement aa wawa F FF sahihi 3 Pipe materials for non standard pipe materials the sound speed for the material must be configured too Standard pipe materials and standard liquids refer to those with the sound parameters that have already been programmed into software of the flow meter therefore there is no need to configure them 4 Liner material and its sound speed and thickness if there is any liner 5 Liquid type for non standard liquids the sound speed of the liquid is also needed 6 Transducer type adapted to the flow meter Generally the Standard M1 clamp on transducers will be the selected option 7 Transducer mounting methods the V method or Z method is the common option 8 Check up the Space displayed on M25 and install the transducers accordingly For standard pipe materials and standard liquids the following detailed step by step setup is recommended 1 Press keys to enter M11 window to input the digits for the pipe outer diameter and then press key 2 Press key to enter M12 window to input the digits for the pipe outer diameter and then press key 3 Press key to enter M14
50. ures combine to make the LRF 2000H ultrasonic flow meter the best and the biggest seller on the Chinese market Moreover it is gaining more and more recognition on the international flow meter market 1 2 Main Features Large screen LCD Non contacting measuring Built in data logger Built in rechargeable battery High accuracy measuring Wide measuring range Concentrating on Flow Measurement 4 LONGRUN www ultrasonicscn com j i rpaNVv OInr tm nr Small and light RS 232 serial interface 1 3 Principle of Measurement The LRF 2000H ultrasonic flow meter is designed to measure the fluid velocity of liquid within a closed conduit The transducers are a non contacting clamp on type which will provide benefits of non fouling operation and easy installation The LRF 2000H transit time flow meter utilizes two transducers that function as both ultrasonic transmitters and receivers The transducers are clamped on the outside of a closed pipe at a specific distance from each other The transducers can be mounted in V method where the sound transverses the pipe twice or W method where the sound transverses the pipe four times or in Z method where the transducers are mounted on opposite sides of the pipe and the sound crosses the pipe once This selection of the mounting method depends on pipe and liquid characteristics The flow meter operates by alternately transmitting and receiving a frequency modulated bur
51. w place where the interference can be reduced 2 Bad sonic coupling for the transducers with the pipe Try to apply more coupler or clean the surface etc 3 Pipes are difficult to be measured Relocation is recommended 2 8 3 Total Transit Time and Delta Time The numbers displayed on menu window M93 are called total transit time and delta time respectively They are the primitive data for the instrument to calculate the flow rate inside the pipe So the flow rate indication will vary accordingly with the total time and delta time The total transit time should remain stable or vary little If the delta time fluctuates higher than 20 it means there are certain kinds of problems with the transducer installation 2 8 4 Time Ratio between the Measured Total Transit Time and the Calculated Time This ratio would be used to check the transducer installation If the pipe parameters are entered correctly and the transducers are installed properly the value for this ratio should be in the range of 100 3 If this range is exceeded the user should check 1 If the pipe parameters are correctly entered 2 If the actual spacing of the transducers is right and the same as what the window M25 shows 3 If the transducers are installed properly in the right directions 4 If the mounting location is good and if the pipe has changed shape or if there is too much fouling inside the pipes 5 Other poor conditions 14 Concen
52. window and press key to enter the option selection mode Use eya a and to scroll up and down to the intended pipe material and then press key 4 Press key W to enter M16 window press key to enter the option selection mode use keys and to scroll up and down to the liner material and then press EN key Select No Liner if there is no liner 5 Press key to enter M20 window press key to enter the option selection mode use keys and to scroll up and down to the proper liquid and then press EN 6 Press key to enter M23 window press key to enter the option selection mode use keys and to scroll up and down to the proper transducer type and then press key 7 Press key to enter M24 window press key to enter the option selection mode use keys and to scroll up and down to the proper transducer mounting method and then press key 8 Press key to enter M24 window to install the transducers on the pipe and then press key to go to M01 for the results The first time users may need some time to get familiar with the operation However the user friendly interface of the instrument makes the operation quite easy and simple Before long the user will configure the instrument with very little key pressing since the interface allows the user to go to the desired operation directly without any extra steps The following tips will facilitate the operation of this instrument 1 When the window display is between to M

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