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wall mount ultrasonic flow meter

1. Generally the ENT key must be pressed to get into the option selection mode for option modifications If the Locked M47 Open message is indicated on the bottom line of the LCD display it means that the modification operation is locked out In such cases the user should go to M48 to have the instrument unlocked before any further modification can be made 2 6 Menu Window List M00 M09 windows for the display of the instantaneous flow rate net totaliser value positive totaliser value negative totaliser value instantaneous flow velocity date time current analogue input values current working status etc M10 M29 windows for entering system parameters such as pipe outer diameter pipe wall thickness liguid type transducer type transducer installation method etc Transducer installation spacing is then calculated according to those parameters and displayed on one of the windows M30 M38 windows for flow rate unit selection and totaliser configuration User can use these windows to select flow rate unit such as cubic meter or liter as well as to turn on off each totaliser or to reset the totalisers M40 M49 windows for setting response time zeroing calibrating the system locking unlocking keypad changing network address ID password etc M50 M89 windows for digital and analogue outputs such as scheduled output RS232 output relay output analogue current loop output LCD freguency out
2. 10 Press MENU 0 to enter into window MO1 to visit the measurement result 2 8 Transducer Mounting Allocation The first step in the installation process is to select an optimal location for installing the transducers in order to make the measurement reliable and accurate A basic knowledge about the piping and its plumbing system would be advisable An optimal location would be defined as a long straight pipe line full of liquid that is to be measured The piping can be in vertical or horizontal position The following table shows examples of optimal locations Principles to select an optimal location 1 Pipe must be full of liquids at the measurement site 2 No heavy corrosion of deposition inside of the pipe 3 Must be a safe location 4 The straight pipe should be long enough to eliminate irregular flow induced error Typically the length of the straight pipe should be 15 times of the pipe diameter The longer the better The transducers should be installed at a pipe section where the length of the straight pipe at upstream side is at least 10D and at downstream side is at least 5D where D stands for pipe outer diameter FIGURE 2 INSTALLATION SITE SELECTION Upstream Downstream 5 If there are flow disturbing parts such as Piping RU guration fDimensi
3. Chemicals alcohol acids etc Plant effluent Beverage liquid food Ultra pure liquids Solvents and other liquids Applications sorted by industry process Water and waste water management Water and waste water treatment plants Power plants such as nuclear power plants and hydraulic power plants Mining and metallurgy plants Petroleum process monitoring and control Chemical process monitoring and control Pulp and paper process monitoring and control Food and beverage processing Marine maintenance and operation Pipeline leakage detection HVAC hydronic balancing Energy supply and production systems Flow measurement networking 1 7 Product Identification Each set of the series flow meter has a unigue product identification number or ESN electronic serial number 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 M61 when contacting the manufacturer 1 8 Specifications Better than 11 Accuracy 1 of reading at rates 70 6 ft s 0 2m s Assume a fully developed flow profile Velocity 0 03 105 ft s 0 01 30 m s bi directional Measurement 0 5s Period Display LCD with backlight 2x20 English letters Keypad 4x4 key membrane keypad with tactile feedback English U S or metric Outputs Analogue output 4 20mA or 0 20mA current output Impeda
4. 20 4 20mA Mode set up the output range from 20 4 20mA 5 0 4 20mA Mode set up the output range from 0 4 20mA 6 20 0 20mA Mode set up the output range from 20 0 20mA 7 4 20mA Corresponding Velocity set up the current loop output range from 4 20mA 8 4 20mA Corresponding Heat Flow set up the current loop output range from 4 20mA The output current value is controlled by sending a parameterized command to the flow meter through its RS232 serial port The command formats are explained in chapter 6 Example if you want to output a 6mA current through the current loop you need to select mode 0 20mA Via RS232 in menu M55 and send command A06 CR to the flow meter This function allows the flow meter to control valve openness Other different current output characteristics are illustrated in the following figures The user can select one of them according to his actual requirements The minimum and maximum values indicated in the figure are those set in menu windows M57 and M58 In the 4 20mA and 0 20mA modes the minimum and maximum can be a positive or negative flow value as long as the two values are not the same In the 20 4 20mA and 20 0 20mA modes the polarity of the actual flow reading is ignored In 0 4 20mA mode the minimum must be negative and the maximum must be positive The last one in the following figures is for velocity output The output current represents flow velocity Output current Output current Ou
5. Choose Installation Method 37 V method Installation ana 37 Z method B Tae IIe ee T 37 W method Installation a a ae aaae a e a aaant aant an a araara t denr ainara 37 922 Transdu er Te l a e ore ca baa A E ease EAEAN 37 9 2 3 Prepare the Pipe SU Le ane EUN ee iuam tide ete 37 9 2 44 Prepare the Transducers sese sees eee eee eee 38 9 2 5 Install the R Tee He lt T 38 9 2 6 Fine Tune the Installation nn 39 9 3 Standard Pipe Dimensions na 39 9 4 Sound Speed Tables aaa 40 1 0 INTRODUCTION 1 1 Preface The wall mount ultrasonic flow meter is designed to be installed in a fixed installation for long term flow measurement The flow meter is based on transit time flow measurement principle It measures the flow rate of liquid in a closed pipe by using a pair of clamp on or wetted ultrasonic transducers In general the liquid should be full in the pipe and should contain no or small amount of particles or air bubbles Examples of applicable liquids are water hot water chilled water city water sea water etc sewage oil crude oil lubricating oil diesel oil fuel oil etc chemicals alcohol acids etc waste water beverage liquid food solvents and other liquids The utilizes state of the art technologies such as advanced signal processing low voltage transmitting small signal receiving self adaptation
6. and the average flow rate which is the average of the flow rate before going offline and the one after going online Set the thermal energy unit Select temperature source 0 temperature from input Al1 and Al2 1 fixed difference When selecting 1 fixed difference you need to enter the temperature difference in this window Select the specific heat value Energy totaliser switch Set energy multiplier factor Reset energy totaliser Display the signal strength S one for upstream and one for downstream and signal quality Q S O and R see M91 are the so called installation triplet They are the key criteria for justifying whether an installation is bad operational or optimal Your installation is bad if S 60 Q 60 and R lt 97 or R gt 103 Your installation is operational if S260 Q260 and 9796 xRx10396 Your installation is optimal if S280 Q280 and 99 sRs101 Note for high velocity flow the optimal range for R may be relaxed Display the transit time ratio R It is one of the installation triplet Refer to the above menu M90 for more details Display the fluid sound speed estimated by using the measured transit time If this value has an obvious difference with the actual fluid sound speed the user is recommended to check if the pipe parameters are correct and if the transducer installation is good Display the average transit time and the delta time transit time difference between upstream a
7. blocks pin 65 64 and 63 You can assign temperature pressure and other physical signals to those channels An internal 24VDC is provided for loop powered transmitters Using standard twisted pair wiring Refer to Chapter 7 for details Wiring Alarms Using standard twisted pair wiring Refer to sections 3 21 and 3 22 for details 2 3 Power Up The flow meter does not have power ON OFF switch When it is connected to power it will start to run automatically WARNING Before connecting the device to power source please do a final check to make sure all the wirings are correct and all the local safety codes mun fll After the power is turned on the flow meter will run a self diagnostic program checking first the hardware and then the software integrity If there is any abnormality corresponding error messages will be displayed Please refer to chapter 5 for error code explanations After successful internal checks the flow meter will display menu window 01 short for MO1 or the menu window which was active at last power off It will also start the measurements by using the parameters configured last time by the user or by the initial program The flow measurement program always operates in the background of the user interface This means that the flow measurement will keep 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 r
8. 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 Clamp on transducer installation steps 1 Locate an optimal position where the straight pipe length is sufficient see the previous section and where pipes are in a favourable condition e g newer pipes with no rust and ease of operation 2 Calculate the transducer spacing Just enter the pipe fluid and transducer information through menu M11 to M24 the flow meter will calculate the transducer spacing automatically The value will be shown in M25 Marking the transducer installation spots on the pipe according to this spacing value 3 Clean any dust and rust on the spot where the transducers are to be installed For a better result polishing the pipe outer surface with a sander is strongly recommended 4 Apply adequate ultrasonic couplant grease gel or Vaseline onto the transducer surface as well as to the installation area on the pipe surface 5 Strap on the transducers using clamp fixture If the pipe is metal no need to use clamp fixture since the transducer has magnetic built in Make sure there is no gap between the transducer surface and the pipe surface 6 Fine tune transducer position until the triplet signal strength S signal guality O and transit time ratio R have the best readings and those reading are in their operational ranges 8260 Q260 and
9. for both the Buzzer and the ON OFF alarm signal could be 1 There is no receiving signal 2 The signal received is too weak 3 The flow meter is not in normal measurement mode 4 The flow direction is changed 5 Overflow occurs at the analogue outputs by 120 or more 6 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 m3 h and greater than 2000m3 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 2000 in M74 for 1 alarm 3 Select item 6 Alarm 1 in M77 Example C assume we need the OCT output to activate when flow rate exceeds 100 500m3 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 Enter flow rate lower limit 1000 in M76 5 Select item 6 Alarm 1 in M78 6 Select item 6 Alarm 1 in M79 i Op
10. general there is no need to calibrate the analogue output since it has been calibrated in factory However when conducting current loop calibration see 83 16 if you find the current value shown in M58 differs from the actual current shown in the ammeter you do need to recalibrate the analogue output Calibration steps First put the flow meter into calibration mode Press MENU 8 2 ENT enter password 4213068 and press ENT again Then connect a precise ammeter to the current output loop Press MENU 5 ENT to calibrate the current loop 4mA output Read the ammeter If the reading is not 4mA use A H or V to adjust the output current until the ammeter reads 4 00mA Press ENT again to calibrate 20mA output similar to the above step Press MENU 6 ENT to save the results in the internal non volatile EEPROM 3 34 How to check the ESN Each product of the flowmeter series has a unique electronic serial umber ESN to identify itself The user can use the ESN for instrumentation management The ESN is displayed in window M61 Use M 1 to view the total working time since the instrument left the factory Use M4 to view the total number of times the instrument has been turned on and off since the instrument left the factory d 0 MENU WINDOW DETAILS Note 1 It is recommended to practice those men
11. on the screen Use A or V to increase or decrease the contrast 3 26 How to use the RS232 serial interface The flowmeter family flow meters are equipped with a RS232C standard serial interface The RS232 interface is wired to a DB9 connector The data rate can be set to 75 115200 Baud Use M62 to configure this interface Refer to Chapter 6 for more details You may use an external RS232 to RS485 converter to connect the flow meter to a 485 bus 3 27 How to view the totalized flow Use M82 to view the daily monthly and yearly totalized flow To view the last 64 days flow history press MENUJ 8 2 then select item 0 for Day You should see the serial number and the date on the first line and the net totalized flow for this specific day Note that on the upper right corner you may see which indicates that the system was normal during that day If you see other characters error occurred in that day Please refer to chapter 5 for error code explanation and resolution To view the flow for a month or a year press MENU 8 2 and select item 1 for Month or 2 for Year 3 28 How to connect analogue input signals There are five analogue input channels which can be used to connect to five channels of 4 20mA signals They are digitized and then acquired by the flow meter The data can then be sent to a remote computer
12. or controller through RS232 upon request Refer to chapter 6 for communication details The input analogue signal can be of pressure temperature or other physic quantities When analogue inputs Al1 and Al2 are connected to the hot and cold temperature sensors of a liquid thermal energy supply system the flow meter can measurement the thermal energy consumption of the system Menu window MOG displays the present current and its corresponding pressure temperature value The terminals assigned to these analogue inputs are refer to Appendix 89 1 Al1 64 and 63 Al2 65 and 63 AI3 73 and 63 Al4 74 and 63 Al5 75 and 63 AI3 Al4 and Al5 are not connected to terminals Please contact the manufacturer if needed 3 29 How to compensate the flow not measured during offline When the power is down the flow meter will not be able to conduct flow measurement In order to compensate the flow uncounted during the offline period you need to enable Automatic Amending function before the flow meter is offline To enable the Automatic Amending function switch to M83 press ENT key then select YES and press ENT again To disable this function just select OFF in menu M83 Refer to the next chapter for M83 details and how the uncounted flow is estimated 3 30 How to use the Working Timer Use the working timer to check the time that has passed with a certain kind of operation The working timer value
13. reading If the value is positive the direction of the flow will be from transducer A to B Otherwise the flow is from B to A 3 3 How to change units systems Use menu window M30 for the selection of units systems either English option 0 or in Metric option 1 3 4 How to select a flow rate unit Use menu window M31 to select the flow rate unit use menu window M32 to select the flow totaliser unit 3 5 How to use the totaliser multiplier Use window M33 to select a proper multiplying factor for the totalisers POS NEG and NET Make sure that the rate of the totaliser pulse is not too fast neither too slow A speed of several pulses per minute is preferable If the totaliser multiplying factor is too small the output pulse will be very fast and there could be a loss of pulses The designed minimum pulse period is 500 milliseconds If the totaliser multiplying factor is too large the output pulse will be very slow which might be a problem if the master device reguires fast response 3 6 How to turn on off the totalisers Use M34 M35 or M36 to turn on or turn off the POS NEG or NET totaliser respectively 3 7 How to reset the totalisers Use M37 to reset the flow rate totalisers 3 8 How to restore the factory default setups Go to window M37 Press the lt Keys This operation will erase all the parameters entered by the user and setup the instrument with factory default values 3 9 Ho
14. refer to Appendix 9 5 for sound speed data For standard pipe materials and standard liquids the sound speed values have already been programmed into the flow meter therefore there is no need to enter them again 3 Liner material its sound speed and liner thickness if there is any liner 4 Liquid type for non standard liquid the sound speed of the liquid should be entered 5 Transducer type 6 Transducer mounting methods the V method and Z method are the common methods 7 Check the transducer distance displayed on window M25 and install the transducers accordingly Example For standard commonly used pipe materials and standard commonly measured liquids the parameter configuration steps are as following 1 Press keys MENU 1 keypad and press ENT key to enter into M11 window Input the pipe outer diameter through the 2 Press key V to enter into M12 window Input the pipe thickness through the keypad and press ENT key 3 Press key V to enter into M14 window Press ENT key to get into the option selection mode Use keys A and V to scroll up and down to the proper pipe material and then press ENT key 4 Press key V to enter into M16 window Press ENT key to get into the option selection mode Use keys A and V to scroll up and down to the proper liner mater
15. time and the delta time are displayed on menu window M93 They are the primary data for the instrument to calculate the flow rate Therefore the measured flow rate will vary as the total transit time and delta time vary The total transit time should remain stable or vary in a very small range The delta time normally varies less than 20 If the variation exceeds 20 in either positive or negative direction there could be certain kinds of problems with the transducer installation The user should check the installation for sure 2 11 4 Transit Time Ratio Transit time ratio R is usually used to check whether the transducer installation is good and whether the entered pipe parameters are in consistency with their actual values If the pipe parameters are correct and the transducers are installed properly the transit time ratio should be in the range of 100 3 96 Particularly when the flow is stand still the ratio should be very close to 100 If this range is exceeded the user should check a If the entered pipe parameters are correct b Ifthe actual spacing of the transducers is the same as or close to what shown on window M25 c Ifthe transducer are installed properly in the right direction d If the mounting location is good if the pipe has changed shape or if the pipe is too old i e too much corrosion or deposition inside the pipe e Ifthere is any interference source inside of the pipe f If there are other aspects wh
16. up the tiny pits which may exist on pipe surface 9 2 5 Install the Transducers Notice For horizontal pipe line it is recommended to install the transducers on the cias side instead of on the top or bottom of the pipe This is to avoid air bubbles on the top and sediments on the bottom of the pipe ir kubbl First mark the transducer installation location bered on the pipe surface according to the mounting spacing given in menu M25 You may need to make a paper template to help you accurately and guickly locate the transducer positions as well as to center the transducers especially if you plan to use Z method for the installation C Cepoztens Then connect the mounting fixture around the pipe Leave the chain loose so you can slip the transducer underneath Apply a small amount of couplant in the prepared area of the pipe where transducers will be in contact Slip the transducer under the clamp fixture Tighten the screw Do the same thing for the other transducer Use the figure on the right as a reference If the pipe material is metal you do not need the clamp fixture The transducers will automatically attach to the pipe by magnetic force You may need to press the transducer against the pipe with certain strength in order to make the contact tight Finally connect the transducers to the main unit with the preferred transducer cables Refer to section 2 2 2 for more information 9 2 6 Fine Tune the I
17. way shipping fee from the customer to the manufacturer manufactory is not liable to any defects or damage attributable to miss usage improper installation out of spec operating conditions replacement of unauthorized parts and acts of nature Besides fuses and batteries are not part of this warranty THE FOREGOING WARANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESS OR IMPLIED WARRANTIES INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND WARRANTIES ARISING FROM DEALING TRADE OR USAGE 8 2 Service For operational problems please contact the technical support department by telephone fax email or internet In most cases problems could be solved immediately For any hardware failure of the instrument we recommend our customers to send back the instrument for service Please contact the technical support department with the model number and serial number of the unit before sending the unit back to us Both numbers can be found on the product label For each service or calibration request we will issue a Return Materials Authorisation RMA number Take notice that the cost for repairing can only be determined after receipt and inspection of the instrument A quotation will be sent to the customer before proceeding with the service Important Notice for Product Return Before returning the instrument for warranty repair or service please read the following carefully 1 If the r
18. 3 12 Howto change the scale factor neeesser eee neee 24 3 13 Howto use the password locker nn 24 3 14 Howto use the keypad locker sees ereer eee 24 3 15 Howto use scheduled data output sese eee 24 3 16 Howto use 4 20mA current loop output ener enne nnnm 24 3 17 Howto output analogue voltage signal sese serere ereer en 25 3 18 Howto use the Frequency Output 25 3 19 Howto use the Totaliser Pulse Output 26 3 20 How to produce an alarm signal 26 3 21 Howto use the OCT output sese ee eee eee 27 3 22 Howto use the relay output oci eee e eed eae ie ees 4 3 23 Howto use the built in Buzzer sese eee cece ee 4 3 24 How to modify the built in calendar nn 4 3 25 How to adj stithe E CD cin iin de iei ee a D etn eid raa ep ide dead 4 3 26 Howto use the RS232 serial interface 4 3 27 Howto view the totalized flow 5 3 28 How to connect analogue input signals ne 5 3 29 How to compensate the flow not measured during offline 5 3 30 Howto use the Working Timer 6 3 31 Howto use the manual totaliser see eee eee eee 6 3 32 Howto use the batch process controller 6 3 33 Howto calibrate the analogue output 6 3 34 How to check the BESNA le kb ERA rete ret ete ento Fee HU HO rang dE re aca 7 40 Menu Window T egeret bii eno ro ertet 8 5 0 TEOHDIeS TOOL utet o hen dco Comte ANN eec to E 19 5 1 IntrOQUuctlOric a aer
19. 56 and M57 c Re calibrate the current loop Verify the output with M49 7 Q Can the flow meter work normally for a few years without stop under harsh environment where power supply voltage varies widely A Yes The flow meter employed intelligent signal processing algorithms to handle strong interference coming from either power line or radiation It also automatically adjusts itself to the optimal operation status when sound wave strength varies due to changing environment 6 0 COMMUNICATION PROTOCOL The ultrasonic flow meter integrates a standard RS 232C communication interface and a complete set of communication protocol Its hardware supports MODEM for phone line based data networking With the aid of a RS232 RS485 converter the flow meter can be connected to a RS485 network bus You may also use our GSM short message module to transmit flow data to a remote computer With the GSM module you are even able to check the flow data and flow meter status from your cell phone When using RS232 for networking you may use the flow meter s IDN as its network address and use W extended command set as the communication protocol The current loop output and OCT output can be used to control analogue based or stepper based valve openness and the relay output can be used to turn on and off other devices The four channel analogue inputs can be used to input pressure temperature and other signals In brief complete flow measurement or therma
20. 6VDC Power consumption lt 2W Standard main unit 6 6lb 3kg 9 2 o ded c o E c o E gt U 2 0 INSTALLATION AND MEASUREMENT 2 1 Unpacking Please unpack the shipping box and check the parts and documents against the packing slip If there is something missing the device is damaged or something is abnormal please contact us immediately and do not proceed with the installation WARNING The flow meter can be used to measure the flow of many liquids Some of the liquids may be hazardous It is very important that you comply with local safety codes and regulations in installing and using electronic devices in your area 2 2 Installation Considerations This section provides guidelines for installing the main unit electronics enclosure and its transducers 2 2 1 Mounting the Main Unit The main unit electronics standard version are housed in an IP65 NEXA 4X weather resistant and dust tight enclosure Therefore the main unit can be installed indoors and outdoors Usually it is mounted in a meter shed or on a location where one can easilly access for meter testing and servicing Please refer to Appendix 9 1 for the enclosure dimensions 2 2 2 Installing Transducers First you need to select a proper installation site For this one usually needs to consider the accessibility of the location operating space needed for the installation safety code compliance etc In addition flow and pipe con
21. 7 1 8 081 8 Ketone 1 310 4 297 RENE 2 3 Kerosene 4 658 Oil Castor 4 854 8 Oil Diesel Oi Peanut Petroleum Tetrachlor Methane 0 607 m Table 9 5 3 Sound Speed Data of Solids Sound Speed Shear Wave 25C TU Material Sound Speed Long Wave 25 C m Steel 1 Carbon hardened 3 150 10 335 5 88 0 2315 Carbon Steel 3 230 10 598 Mild Steel 3 235 10 614 s 5 89 5 89 0 2319 0 2319 Steel 1 Carbon 3 220 10 565 5 690 0 224 302 Stainless Steel 3 120 10 236 303 Stainless Steel 304 Stainless Steel 304L Stainless Steel 3 070 10 073 316 Stainless Steel 3 272 10 735 347 Stainless Steel 3 095 10 512 Aluminum 3 100 10 171 Aluminum rolled 3 040 9 974 Copper annealed 2 235 7 628 Copper rolled CuNi 70 Cu 30 Ni 2 540 CuNi 90 Cu 10 Ni gt Ductile Iron 3 000 9 843 Cast Iron 2 500 8 203 4 55 0 1791 Table 9 5 3 continued Sound Speeds in Solids Sound Speed Sound Speed Shear Wave 25 C ae NE Wave 25 C Material Tintanium ECON 125 10 253 6 10 2402 Tungsten annealed 9 482 5 18 0 2039 Pew 2 so Tungsten carbide 3 980 13 058 PRE Zinc rolled 2 440 8 005 0 1642 Glass Pyrex 10 761 Glass heavy silicate flint 7 808 mos som m e aa wo 99 PVC CPVC 1 060 3 477 2 40 0 0945 Acrylic 4 690 2 73 0 1075 Asbestos Cement
22. 9796s R s103 It is even better if you can tune those readings into their optimal ranges S280 Q280 and 99 s R 10196 Note for large velocity flow the R values may exceed this range to some degree For more details on clamp on transducer installation please refer to Appendix 9 2 2 11 Installation Check up After the completion of transducer installation the user should check the following items the receiving signal strength S the signal quality Q value the delta time traveling time difference between the upstream and the downstream signals the estimated liquid sound speed the transit time ratio R and etc As such one can be sure that the flow meter is working properly and the results are reliable and accurate 2 11 1 Signal Strength Signal strength S indicates the amplitude of receiving ultrasonic signals by a 3 digit number 000 means there is no signal detected and 999 refers to the maximum signal strength that can be received Note that sometimes when no confusion will be introduced S value is expressed by two digits 00 99 for simplicity Although the instrument works well when the signal strength ranges from 60 to 99 stronger signal strength should be pursued because a stronger signal means a better result The following methods are recommended to obtain strong signals 1 If the current location is not good enough for a stable and reliable flow reading or if the signal strength is lower than 60 relocate to
23. CONTENTS B Ta ssl edi e ETT 6 1 1 Pretace wees oen em tuom tei bue ido studui e itp mue mati LLLI Nani 6 1 2 Eeatuless ctos eu As LM dre 6 1 3 Flow Measurement Principle sees eee ee ee eee D 1 4 Packaging ETT 7 5 lt Optionah lt T CTT T 8 1 6 Typical Applications ener dd e dere idee T et einen LE E dae 8 1 6 1 Applications sorted by industry process sese eee eee 8 1 7 Product Identification eene eene nent ntn nnnm nennen 9 1 8 SpecifiCatlOns ee aerem bog p vat aes c io ib ed Laos Eee e a MR 9 2 0 Installation and Measurement 11 2 1 Unpacking oot n ler beu eh e c E edt ad bb ahd rebra 11 2 2 Installation Considerations eene enne nennen nne nnne 11 2 2 1 Mounting the Main nlt accade dde idi pa deni hrasta ued ettari uae 11 2 2 2 Installing Transducers nana 12 2 2 3 Distance from Main Unit to Transducer sss eee eee nn 12 2 2 4 CADIS 45 ce teer a a ee cedi tmd e p ote ena atest Ades Gatton e reae 12 2 2 5 Power Supply Wiring ec ito eade ee Be dee ie eee tot iE 12 2 2 6 Other Electrical Connections eene eene 13 2 3 So a oC 13 DA CEY aT Te M M rh crue Mos dur ER e e EM MEE 14 2 5 Menu WindOWS curte ineine de nd idt eno d de SNEJE Kog rsy ed aee Loa e dag n dg sa e Kedar 15 2 6 Men WNdOW S ols onadva ae be a vije a pevk svo oazi ninr ea oi alne 16 2 7 Steps to Configur
24. CR ater e Piet a aede dp ble eee P Fade ees 19 5 2 j Powerconm EIFOIS ice det dine dem shams RR ARI II LA RR Je RR D EUR RE De TM SERT 19 5 3 Working Status Errors op tem t ai e HR ERR dete E ha pri ni 20 5 4 Other Problems and Solutions 21 6 0 Communication Protocol sesede tiiin sntr nnan 24 6 1 RS232 Connector Pin oUt Le edle dete qe MERE poi 24 027A RS232 WItIDO ioter tt pana ei bene ao ee edu ate pene TE 25 6 3 Communication Protocol nana 25 0 341 Basie Commands e ERR Lee tem ER MV nA 25 6 3 2 Protocol PrefbcUsage dno dere nete edere e eire a Bug de iu 27 6 4 The M command and the ASCII Codes 28 6 5 Programming Examples Ere d Re ER iu ee qe ree ERR didi 29 7 0 Measurements of Thermal and Other Physical Parameters 30 7 1 INTPODUCTION 2 zni ETE 30 2 Miring Analogue InpUts TTT 30 7 3 Thermal Energy Measurement eee ee eee eee ee eee 31 7 4 Configure Analogue Measurement Ranges eee eee eee ee eee 32 7 5 Read Input Analogue Values from a Network Computer 32 8 0 Warranty and Sery iC sien btn ce UI UN c Roe aie aee pet tan dnd eS 33 8 1 Wartahlty tnu aa ein ee nat o bam che add O O arene niki 33 9 2 OS6 VICe s in c do A A VAJ ANE C V Ne Si 33 9 0 App NADE s tides tob dust ett Eoo AES Pas m RESI a 35 9 1 Wiring Diagram and Outline Drawings nan 35 9 2 Clamp on Transducer Installation Guide eee eee eee 37 9 2 1
25. DH 61 6 36H 54 6 A t 3EH 62 gt 7 37H 55 7 V 3FH 63 6 5 Programming Examples Example 1 VB requests the instantaneous in second flow rate VB Code mscom1 input dgs vbcrif Example 2 VB requests the 4321 flow meter to return the following data with checksum a instantaneous flow rate b instantaneous flow velocity c Positive totaliser value d Heat totaliser value e Al1 input current f Al2 input current VB Code mscom1 input W4321PDQD amp PDV amp PDI amp PDIE amp PBA1 amp PAI2 vbcrif Example 3 VB requests to change the pipe OD to 345mm VB Code mscom1 input M VBCRLF M1 VBCRLF M1 VBCRLF M3 VBCRLF M4 VBCRLF M5 VBCRLF Mz VBCRLF Note that M lt represents the MENU key M represents the ENT key M1 represents the 1 key 7 0 MEASUREMENTS OF THERMAL AND OTHER PHYSICAL PARAMETERS 7 1 Introduction The standard model flow meter has two analogue input modules built into its hardware system It can accommodate three other analogue input modules These modules provides five analogue channels Al1 Al5 which can be connected to analogue sensors to measure physical quantities such as temperature pressure etc By combining the flow rate information the meter can provide very valuable information for resources management and process control For thermal energy measurement or caloric measurement two temperature transmitters are r
26. DN50 DN700mm 0 C 160 C Liquid Types Virtually all commonly used clean liquids Liquids with small quantity of tiny particles may also be applicable Particle size should be less than 75um particle concentration less than 10 000ppm Liquids should contain no or very minor air bubbles Examples are chilled hot water sea water waste water chemical liquids oil crude oil alcohol beer etc Liquid Temp 0 C 160 Cfor clamp on transducer Higher temperatures can be accommodated Consult the manufacturer for assistance 40 C 160 C for wetted transducer Suspension 20 000ppm and particle size less than 80um May contain very concentration small amount of air bubbles 1 2 240 DN15mm DN6 000mm Pipe Material All metals most plastics fiber glass etc Allow pipe liner Pipe Straight 15D in most cases 30D if a pump is near upstream where D is pipe run diameter i o o gt o C c s Shielded transducer cable Standard length 5mx2 Can be extended to 500m Contact the manufacturer for longer cable reguirement Cable should not be laid in parallel with high voltage power lines neither should it be close to strong interference source such as power transformers Main unit 14 F 158 F 10 C 70 C Temperature Clamp on transducer 22 F 212 F 30 C 100 C Main unit 85 RH Humidity Transducer water submersible water depth less than 10 3m AC 85 264240V DC 8VDC 3
27. Int Pulse Reverse Flow 12 Energy Pulse AO Over 120 13 ON OFF via RS232 FO Over 120 14 Fluid Sound Speed Changed Alarm 1 15 Buzzer on when key down Alarm 2 16 Buzzer off Batch Control OCT Open Collector Transistor output setup By selecting a proper triggering source the OCT circuit will close when the trigger event occurs The OCT wiring diagram is shown in Appendix 89 1 The available triggering sources are 0 No Signal 9 POS Int Pulse Poor Signal 10 NEG Int Pulse Not Ready 11 NET Int Pulse Reverse Flow 12 Energy Pulse AO Over 120 13 FO freguency output FO Over 120 14 FO via RS232C Alarm 1 15 ON OFF via RS232 Alarm 2 16 Fluid Sound Speed Changed Batch Control 17 OCT off M79 Relay output setup By selecting a proper triggering source the relay circuit will close when the trigger event occurs The relay is single pole and constant on The available triggering sources are 0 No Signal 9 POS Int Pulse 1 Poor Signal 10 NEG Int Pulse 2 Not Ready 11 NET Int Pulse 3 Reverse Flow 12 Energy Pulse 4 AO Over 120 13 ON OFF via RS232 5 FO Over 120 14 Fluid Sound Speed Changed 6 Alarm 1 15 Relay off 7 Alarm 2 8 Scheduled Output The relay output is a single pole single throw SPST always on type drive Its maximum operating freguency is 1Hz Its load current is 1A at 125VAC or 2A at 30VDC For batch process controller Select the triggering signal of the internal batch p
28. SM messaging 10 GC CR C Command for GSM messaging DUMP Return the print buffer content In ASCII string format DUMPO Clear the whole print buffer In ASCII string format DUMP1 CR Return the whole print buffer In ASCII string Format 24KB long content Notes 1 CR stands for Carriage Return Its ASCII code is ODH LF strands for Line Feed Its ASCII code is OAH 2 d stands for a digit number of 0 9 0 is expressed as 0 000000E 00 3 d stands for a digit number of 0 9 The number before E is integer 4 Working status code 1 6 letters Refer to Table 5 2 for error code 5 s is ON OFF or UD For instance TR ON RL UD means that the OCT is in closed state and RELAY is not used 6 stands for key value For instance value 30H means key 0 command M4 is eguivalent to press key 4 7 a stands for current value a digit number of 0 20 For instance A02 34 A00 2 8 dddddddt stands for 8 digit electronic serial number t stands for flow meter type 9 If there are more than one flow meters in a network all the basic commands must 6 3 2 1 Prefix P be prefixed with N or W Otherwise multiple flow meters may reply to the same request 10 Adding a GSM module to the flow meter allows the user to check flow meter flow rate and other parameters from a cell phone 11 Used for visiting the printer buffer content Protocol Prefix Usage The prefix P can be added before any command i
29. You must make sure the power supply type WARNING Be careful about the power supply type of your flow meter and the power supply wiring Connecting to a wrong type power source or improper connection of line power could damage the flow meter It may also cause hazardous voltage at enclosure the transducer flow cell and associated piping of your flow meter matches the power source to which the flow meter will be connected Open the flow meter enclosure On the lower right corner refer to the figures in Appendix 9 1 you should see three terminal blocks which pins are labelled as 11 12 and 13 Normally pin 13 should be connected to your Earth ground Make sure your Earth ground is good Pins 11 and 12 should be connected to Neutral and Line respectively If 8 36VDC power source is used its positive lead and negative lead should be connected to pin 24 and 23 respectively Note that in this case the 4 20mA output may not be available except special instruction was given when the order was processed Please refer to Appendix 9 1 for more wiring information 2 2 6 Other Electrical Connections Wiring RS232 Port Refer to sections 6 1 6 2 and Appendix 9 1 for details Wiring 0 4 20mA Output Using standard twisted pair wiring Refer to Appendix 9 1 for details Wiring 0 4 20mA Inputs There are five analogue input channels which can be used to accommodate five channels of analogue input signals Two of them are wired to terminal
30. a more favorable location 2 Try to polish the outer surface of the pipe and apply more couplant to increase the signal strength 3 Tenderly adjust the position of the two transducers both vertically and horizontally while checking the signal strength Stop at the position where the signal strength reaches to maximum Then check the transducer spacing to make sure it is the same as or very close to what window M25 shows 4 If the installation method is V method and the pipe is big you may need to try Z method in order to get stronger signals 2 11 2 Signal Ouality Signal guality is indicated as the O value in the instrument A higher O value would mean a higher Signal to Noise Ratio SNR and accordingly a higher degree of accuracy able to be achieved Under normal pipe condition the O value is in the range of 60 99 the higher the better Causes for a lower O value could be 1 Interference from other instruments and devices nearby such as a power freguency transverter which could cause strong interference Try to relocate the flow meter to a new place where the interference can be reduced 2 Bad sonic coupling between the transducers and the pipe Try to polish the pipe surface again clean the surface and apply more couplant etc 3 The selected pipe section is difficult to conduct the measurement Relocate to a more favorable pipe line 2 11 3 Total Transit Time and Delta Time The total transit time or traveling
31. arameters select Entry to Save and press ENT An address number and original parameters will be displayed Use A H or W 4 key to change address number Press ENT again will save the current setup parameters into the selected address space Display the cross sectional area inside the pipe Entry to determine whether or not to keep the last good value when poor signal condition occurs This function allows continued flow totalizing YES is the factory default Entry to set empty pipe signal threshold When the signal strength is less than this threshold the pipe is classified as empty pipe and the flow meter will not totalize the flow This is based on the fact that when the pipe is empty the transducer can still receive signal just smaller than normal As aresult the flow meter will show normal operation which is not correct M30 Window for selecting unit system The conversion from English to Metric or vice versa will not affect the unit for totalisers M31 Window for selecting flow rate unit system Flow rate can be in 0 Cubic meter short for m3 1 Liter I 2 USA gallon gal 3 Imperial Gallon igl 4 Million USA gallon mgl 5 Cubic feet cf 6 USA liquid barrel bal 7 Imperial liquid barrel ib 8 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
32. at ending with a carriage CR and line feed LF Commonly used commands are listed in the following table 6 3 1 Basic Commands Command Function Data Format DQD CR Return flow rate per day d ddddddE dd CR LF DQH CR Return flow rate per hour d ddddddE dd CR LF DQM CR Return flow rate per minute d ddddddE dd CR LF DQS CR Return flow rate per second d ddddddE dd CR LF DV CR Return instantaneous flow velocity d ddddddE dd CR LF DI CR Return POS totaliser dddddddE d CR LF DI CR Return NEG totaliser dddddddE d CR LF DIN CR Return NET totaliser dddddddE d CR LF DIE CR Return Caloric Totaliser Value dddddddE d CR LF DID CR Return Identification Number ddddd CR LF IDN E CR Return Instantaneous Caloric d ddddddE dd CR LF Value DL CR Return signal strength and signal UP dd d DN dd d Q dd CR LF quality DS CR Return the percentage of d ddddddE dd CR LF analogue output AO DC CR Return the present error code 4 DA CR OCT or RELAY alarm signal TR s RL s CR LF DT CR Return the current date and time yy mm dd hh mm ss CR LF M CR Send a key value as if a key is M CR LF pressed LCD CR Return the current display contents C1 CR OCT close CO CR OCT open R1 CR RELAY close RO CR RELAY open FOdddd CR Force the FO output
33. ature value 63 64 65 73 The flowmeter can accommodate five analogue signals with its five analogue input modules Al1 and AI2 are available in standard options The other three modules are available only upon request Press Transmitter Temp Transmitter Temp Transmitter FIGURE 6 ANALOGUE INPUT WIRING 7 3 Thermal Energy Measurement There are two methods for thermal energy calculation 1 Qt Qx T2 T1 x Ct 2 Qt Q x TC2 TC1 Where Qt is the thermal energy or caloric consumed Q is the flow rate T1 and T2 are the temperature at supply and return points respectively Ct is the specific heat or the thermal capacity coefficient of the fluid which can be entered in menu M86 For water it is normally about 0 0041868GJ m3 C TC1 and TC2 are the thermal capacities corresponding to temperature T1 and T2 which are calculated by the flow meter according to international standards and displayed in MO5 The following menu windows might be used when performing thermal energy measurement Menu window MOS display energy and totalized energy Menu window MOG display the current values of input Al1 and AI2 and their corresponding temperature values Menu window M63 set the minimum and maximum temperature values which correspond to the minimum current 4mA and maximum current 20mA of channel Al1 Menu window M64 set the minimum and maximum temperature values which correspond to the minimum current 4mA and ma
34. ditions near the installation site are also very important Please refer to section 2 8 for site selection details Then follow the installation guidelines given in Appendix 9 2 for installing clamp on transducers 2 2 3 Distance from Main Unit to Transducer In general the closer the transducer to the main unit the better the signals All major cable suppliers can supply up to 1640ft 500m long transducer cable as per specifications 2 2 4 Cables The flow meter utilizes a double balanced driving technigue for high performance ultrasonic transimision and receiving It reguires twisted shielded cable for the transducer We recommend to use the cable supplied by the manufacturer If you want to do the transducer cabling yourse please consult the manufacturer in advance Try not route the transducer cable along with high current AC lines Aviod strong interference sources Make sure the cables and cable connections are protected from weather and corrosive conditions WARNING The transducers may have static charges accumulated during transportation Before connecting the transducers to the main unit please do discharge the transducers in a safe area by shorting the centre conductor of the transducer cable connectors to the metal shield of the connector 2 2 5 Power Supply Wiring The user normally selects the type of power supply when the order is placed There are three types of power supply options 110VAC 220VAC and 8 36VDC
35. e detected during normal operation For those errors undetectable due to incorrect settings or improper testing conditions the flow meter will also display useful information to help the user to guickly debug the error and solve the problem There are two types of errors one is hardware error another is operational error Details are presented in the following sections 5 2 Power on Errors When powered on the ultrasonic flow meter automatically starts the self diagnosis process to find if there are any hardware and software problems If a problem is identified an error message will be displayed The following table shows the possible error messages the corresponding causes and their solutions Table 5 1 Hardware self diagnosis errors and solutions Error message Causes Solutions ROM Parity Error ROM operation illegal 1 Reboot the system error 2 Contact the manufacturer Stored Data Error User entered parameters 1 Reboot the system lost 2 If problem persists press ENT key to restore the factory default configuration SCPU Fatal Error SCPU hardware fatal error System Clock Slow or Problem with the system Fast Error clock or the crystal 1 Reboot the system oscillator 2 Contact the manufacturer CPU or IRQ Error Problem with CPU or IRQ hardware System RAM Error Problem with RAM chip Time Date Error Problem with date time chip 1 Initialize the calendar in menu window M61 2 Contact the man
36. e the Parameters eene eene nennen 16 2 8 Transducer Mounting Allocation sse eem een 18 29 Transducers Wiring eno ee ret E e dosed et ie edit diese a obudi k tcs 19 2 10 Transducers Installation enne nennen nnne nnne 19 2 11 Installation Check up eene nnne nnns ener nennen nnne 20 2 11 17 Signal Stterigtisu Ii e epe ledit di fe de Habe ddan debe 20 2 11 2 Signal Quality tnt tecto acti eee YR ERR IER ie odkri debe tuae ELE RETE DG 21 2 11 3 Total Transit Time and Delta Time sees 21 2 11 4 Transit RT aU E Te ote Bb ete HIM decenti bei 21 3 0 HOW TO mt e pet ee b en LL INL RM e SCC R M M Dun cer NR ue 22 3 1 How to check if the instrument works properly eee 22 3 2 How to check the liquid flowing direction sss eee eee eee eee e 22 3 3 How to change nits systelTis erecti E RO tH REO eee eR CH podani 22 3 4 How to select a flow rate unit 22 3 5 How to use the totaliser multiplier nn 22 3 6 How to turn on off the totaliseers sss eee eee eee 23 3 7 How to reset the totalisers sese eee ee yeee eer ee eee 22 3 8 Howto restore the factory default aetups sese eee eee ee 23 3 9 How to use the damper to stabilize the flow rate 23 3 10 Howto use the low flow cut off function 23 3 11 Howto conduct zero calibration sese ee eee eee eee 23
37. eflect the new parameter changes When the power is turned on or new pipe parameters are entered the flow meter will enter into a self adjusting mode to adjust the gain of the receiving circuits so that the signal strength will be within a proper range By this step the flow meter finds the best system gain which matches the pipe material and fluid type The user will see the progress by the number s1 s2 s3 and s4 located on the upper left corner of the LCD display If the self adapting process is completed successfully letter AR will be displayed When the user adjusts the position of the installed transducers the flow meter will re adjust the signal gain automatically Any user entered configuration value will be stored in the NVRAM non volatile memory until it is modified by the user 2 4 Keypad The keypad of the flow meter has 16 keys Figure 2 1 Keys 0 9 and are keys to enter numbers Key A is the going UP key when the user wants to go to the upper menu window It also works as key when entering numbers Key V is the going DOWN key when the user wants to go to the lower menu window It also works as the key when entering numbers Key 4 is the backspace key when the user wants to go left or wants to backspace the left character that is located to the left of the cursor Key ENT is the ENTER key for any
38. equired to be installed on the measuring site one on the supply side of the flow and the other on the return side They should provide accurate temperature data to the flowmeter through analogue input channels Alland Al2 Their signals must be 4 20mA or 0 20mA standard current signals All the results can be sent to a master computer through the built in serial port see chapter 6 for the communication This means that a flowmeter can be used as a RTU in a flow monitoring network It helps to reduce the cost and complexity while improving the reliability of a monitoring network Note that the analogue to digit conversion resolution of these analogue channels is 12 bit and there is no electrical isolation for those channels If the working environment is subjected to strong interference it is recommended to add external isolation to protect the flow meter device 7 2 Wiring Analogue Inputs For caloric measurement the supply side temperature transmitter should be connected to channel Al1 terminal blocks 64 and 63 and the return side transmitter should be connected to channel AI2 terminal blocks 65 and 63 with twisted pair wiring Figure 7 1 An internal 24VDC power is proved to the terminals thus no external power supply is needed This means that the temperature or pressure transmitter must be two wire type transmitter Menu window M06 displays the current analogue input data and its corresponding GND AM A2 A3 pressure or temper
39. er to the next chapter on menu M79 for relay configuration 3 23 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 3 24 How to modify the built in calendar The current date and time is displayed in menu M04 in format yy mm dd hh mm ss If this is the first time you run the flow meter please do make sure that the date and time are correct If not please make correction Besides if daylight saving applies in your area you may also need to change the time accordingly To make changes on the date and time press MENU 6 0 ENT to switch to menu M61 and modify the settings Use the dot key to skip over these digits that need no modifications 3 25 How to adjust the LCD Use M70 to adjust the LCD backlight Press MENUJ 7 O ENT You should see gt on the screen which indicates that the system is ready for modification Use A and V to select the desired option Always On means that the backlight will remain on always Always Off means that the backlight will remain off always Time means that the backlight will keep on for x seconds which should be keyed in after selecting Time Use M71 to adjust the LCD contrast This is necessary when the letters on the screen are not clear and the viewing angle is offset Press MENU 7 1 ENT You should see gt
40. ettings in M56 Improper settings for current 3 Confirm if the actual flow rate is too high loop output Freguency Output 1 The freguency output is 1 Ignore it if freguency output is not used o Over 120 Over 2 Check the values entered in window M66 2 Improper settings for M67 M68 and M69 frequency output 3 Use a larger value in M69 if needed 3 The actual flow rate is too high 4 Confirm if the actual flow rate is too high System RAM Error 1 Temporary problems with 1 Reboot the system RAM RTC Date Time Error 2 Contact the manufacturer 2 Permanent problems with CPU or IRQ Error Refer to Table 5 1 as well hardware ROM Parity Error Adjusting Gain gt s1 Instrument is in the progress of No need for action Adjusting Gain gt s2 adjusting the gain for the signal and the number Adjusting Gain gt s3 indicates the progressive steps Adjusting Gain gt s4 shown in M00 M03 Empty pipe 1 No liguid inside the pipe 1 Ifthe pipe is not full relocate the meter to 2 Incorrect setup in M29 where the pipe is full of liquid 2 If the pipe is full enter 0 in M29 54 Other Problems and Solutions 1 Q Why the instrument displays 0 0000 flow rate while the liquid in the pipe is actually flowing The signal strength is checked to be good the working status is R and the signal quality Q has a satisfactory value A The problem is likely to be caused by the inc
41. etum item has been exposed to nuclear or other radioactive environment or has been in contact with hazardous material which could pose any danger to our personnel the unit cannot be serviced 2 If the return item has been exposed to or in contact with dangerous materials but has been certified as hazard free device by a recognized organization you are required to supply the certification for the service 3 If the return item does not have a RMA associated it will be sent back without any service conducted 9 0 APPENDIX 9 1 Wiring Diagram and Outline Drawings The following wiring diagram is for standard version of the flowmeter For desktop version please contact manufactory The internal structure of the standard version of the flowmeter is shown in the following picture All the wiring terminal blocks are located on the lower part of the box right above the interface label The terminal block pins are numbered and marked right below the pins 11 12 13 Line Voltage and Fuse Ratings For 8 36VDC power supply 3 0A Slo Blo For 110VAC power supply 1 0A Slo Blo For 220VAC power supply 0 5A Slo Blo As indicated in the right picture the fuse is located on the lower right corner of the unit right below the keypad panel If you want to replace the fuse you may need to remove the keypad panel to have better access WARNING Disconnect power before removing fuse Be careful not to touch the on board electronic parts when yo
42. ferent types of menu windows 1 Menu windows for number entering e g M11 for setting up pipe outer diameter 2 Menu windows for option selection e g M14 for the selection of pipe materials 3 Results display windows e g window MOO for displaying flow rate etc For number entering windows the user can directly press the digit keys if the user wants to modify the value For example if the current window is on M11 and the user wants to enter 219 2345 as the pipe outer diameter then the flowing keys should be pressed 2 111 9 112113 14 5 ENTI For option selection windows the user should first press the ENT key to get into option selection mode Then use A H W 4 or digit key to select the right option Consequently press the ENT to make the selection For example assume your pipe material is stainless steel and you are currently on menu window M14 which is for the selection of pipe materials if you are on a different window you need to press MENU 1 4 first in order to enter into the M14 window You need to press the ENT key to get into the option selection mode Then either press the A H and V keys to make the cursor on the line that displays 1 Stainless Steel or press the 1 key directly At the end press ENT again to make the selection
43. g Window M42 allows us to take care of this issue At first the user should make sure that the liquid in the pipe is totally stopped no velocity Then go to window M42 and press the ENT key to start the zero point setup function Wait until the counter reading goes down to 00 3 12 How to change the scale factor A scale factor is the ratio between the actual flow rate and the flow rate measured 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 is transducer dependent Prior to shipment from the factory the scale factor of a transducer pair is calibrated on a pipe with water flowing inside If you ordered multiple pairs of transducers be sure you entered the scale factor of the transducer pair you are using The scale factor is also affected by other factors such as pipe size fluid viscosity installation variation etc It is therefore recommended to do on site calibration when accuracy is of crucial importance 3 13 How to use the password locker The password locker provides a means of preventing inadvertent configuration changes or totaliser resets When the system is locked the user can still browse menu windows but cannot make any modifications on the windows The password locking unlocking is done in window M47 The system can be locked without a password or with a password consisted of 1 to 4 di
44. gies As shown in Figure 1 the utilizes a pair of ultrasonic transducers which are mounted on the pipe upstream and downstream respectively Each transducer functions as both ultrasonic transmitter and receiver The main unit operates by alternately transmitting and receiving a coded burst of sound energy between the two transducers The transit times in the upstream direction as well as in the downstream direction are measured The difference of the two transit times is directly and exactly related to the velocity of the liguid in the pipe FIGURE 1 TRANSIT TIME FLOW MEASUREMENT PRINCIPLE Down stream transducer _MD AT sin20 To Tiin spacing Upstream transducer Where 0 is the angle between the sound path and the flow direction M is the number of times the sound traverses the flow D is the pipe diameter Tup is the time for the beam travelling from upstream the transducer to the downstream transducer Tdown is the time for the beam travelling from the downstream transducer to the upstream transducer AT Tup Tdown The flow rate is then computed by combining the velocity information with pipe parameters and a scale factor The scale factor is normally determined by calibration in factory Three types of transducers can be used with the main unit which are including the clamp on transducer the insertion wetted transducer also called hot tap and the flow cell transducer All of them do not block t
45. gits For no password locking unlocking just press ENT key in window M47 If the password is forgotten please contact the manufacturer 3 14 How to use the keypad locker First switch to the menu window which will be displayed after the keypad is locked Then press MENU 4 8 to switch to menu M48 Press ENT and enter a 1 8 digit long password Password should be numerical only Press ENT again to set the password The system will return to the previously selected window automatically 3 15 How to use scheduled data output Data can be sent to RS232 serial port by a preset schedule The data items to be output are selected in M50 Switch to menu M50 select ON followed by data items then press ENTI If you do not want to output data through RS232 select OFF in M50 and press ENT The output time interval and last period are set in window M51 Refer to the next chapter for details on M51 3 16 How to use 4 20mA current loop output The accuracy of the current loop output is better than 0 196 It can be configured to different mode such as 4 20mA mode 0 20mA modem 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 in M55 but also set the flow rate values which correspond to the minimum current 4mA and t
46. he flow thus do not generate pressure drop The transducers can be mounted in V method where the sound transverses the pipe fluid twice or in W method where the sound transverses the pipe fluid four times or in Z method where the transducers are mounted on opposite sides of the pipe and the sound crosses the pipe fluid once The selection of the mounting methods depends on pipe and liquid characteristics 1 4 Packaging List e Main unit 85 264 VAC DC24V 1 unit e M1 type clamp on transducer for 2 28 pipe DN50 700mm 1 pair e Dedicated shielded transducer cable 5 Metrex2 e Clamp on fixture 1 set e Users Manual 1 unit e Allen Wrench 1 unit e Certification 1 page e Pakcing list 1 page 1 5 Optional Parts S1 type clamp on transducer for small pipe 1 2 4 DN15 100mm L1 type clamp on transducer for large pipe 11 240 DN300 6000mm S1H type clamp on transducer for small pipe with high temperature liquid 1 2 4 DN15 100mm 0 160 C M1H type clamp on transducer for middle pipe with high temperature liquid 2 28 DN50 700mm 0 160 C 1 6 Typical Applications The flow meter can be applied to a wide range of pipe flow measurements Applicable liquids include pure liquids as well as liquid with small quantity of tiny particles Examples are 1 6 1 Water hot water chilled water city water sea water waste water etc Sewage with small particle content Oil crude oil lubricating oil diesel oil fuel oil etc
47. he maximum current 20mA Enter the two values in M56 and M57 Example A flow rate range is 0 500m3 h Just enter 0 in M56 and 500 in M57 Example B flow rate range is 500 0 1000m3 h If flow direction is not 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 4mA 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 MENU 5 8 then ENT to enter into menu M58 Use A t and to display OmA 4mA 8mA 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 01mA If the differences are not within tolerance calibrate the current loop see section 3 33 The present current loop output is displayed in Window M59 It changes along with flow rate change 3 17 How to output analogue voltage signal Connect a 2500hm 0 25W resistor across the two current loop output terminals terminals 21 and 22 Th
48. ial and then press ENT key Select No Liner if there is no liner 5 Press key V to enter into M20 window Press ENT key to get into the option selection mode Use keys A and V to scroll up and down to the proper liquid and then press ENT key 6 Press key V to enter into M23 window Press ENT key to get into the option selection mode Use keys A H and Y to scroll up and down to the proper transducer type and then press ENT key 7 Press key V to enter into M24 window Press ENT key to get into the option selection mode Use keys A and V to scroll up and down to the proper transducer mounting method and then press ENT key 8 Press key W to enter into M25 window The transducer installation distance will be displayed on the window Based on this distance and the transducer installation method selected above install the transducers on the pipe refer to Appendix 89 2 for more installation details 9 After installation is completed check if the triplet signal strength S signal guality O and transit time ratio R are in the right range Press keys MENU 9 0 to enter into M90 window for visiting S and Q and press MENU 9 to visit R
49. ich do not meet the measurement requirements as recommended earlier 3 0 HOW TO 3 1 How to check if the instrument works properly Co Switch to menu M08 by entering MENU 0 is working properly keys If R is displayed on the screen the instrument 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 disappear If you do not use frequency output you may ignore this error If G is displayed the flow meter is adjusting system gain This is normal as far as it does not last long If V is displayed there is no signal received Check if the transducer cables are connected properly and transducers are clamped firmly If J is displayed there is hardward problem Turn off the power then turn on the power again If the problem remains refer to Chapter 5 for diagnosis details If an H flashes instead the received signal is poor Please refer to Chapter 5 for diagnosis information 3 2 How to check the liquid flowing direction Assume that transducer A is connected to the upstream terminals and transducer B is connected to the downstream terminals First make sure that the instrument works properly Then check the flow rate
50. icult Whenever possible try to avoid this kind of pipe If you have to work on this kind of pipe try our plug in transducers that are installed permanently on the pipe by drilling holes on the pipe while liguid is running inside 9 When select the measurement site you may need to consider where to mount the flow meter main unit Normally electronics are housed in a weather resistant enclosure It can be mounted in a meter shed or a location that allows easy access to the flow meter for programming and servicing 10 When select the measurement site you may also need to consider how to install the transducers Make sure you have enough spatial space for easy operation 2 9 Transducers Wiring Since the flow meter utilizes balanced topology for high performance ultrasonic transmitting and receiving it is recommended to use high frequency twisted cable with shielding as the transducer cable in order to guarantee the signal quality Please refer to section 2 2 and Appendix 9 1 on how to wire transducers to the flow meter terminals 2 10 Transducers Installation The transducers used by the flow meter series ultrasonic flow meter are made of piezoelectric crystals both for transmitting and receiving ultrasonic signals through the wall of liquid piping system The measurement is realized by measuring the travelling time difference of the ultrasonic signals Since the difference is very small the spacing and the alignment of the transducers are
51. input or selections Key MENUJ 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 a 2 digit number Figure 2 1 Keypad layout The MENU key is shortened as the M key hereafter when referring to menu windows Key pressing induced beep sound can be enabled disabled in menu window M77 2 5 Menu Windows The flow meter user interface comprises about 100 independent menu windows that are numbered by Moo M01 M02 M99 M 0 M1 etc There are two methods to visit a menu window 1 Direct jump in Simply press the MENUJ key followed by a 2 digit number For example if you want to visit menu window M11 for pipe outer diameter press the following three keys consecutively MENU 1 1 2 Press the A t or V key Each time of the A key pressing will lead to the lower numbered menu window For example if the current window is on M12 the display will go to window M11 after the A key is pressed once You do not need to remember all the menu windows Just remember the most commonly used window numbers and the approximate window number of some uncommonly used windows would be sufficient You can always use A and V keys to find the right window There are three dif
52. is displayed in window M72 To reset the timer press ENT key and select YES 3 31 How to use the manual totaliser Use M38 for the manual totaliser setup Switch to M38 Press ENT key to start and stop the totaliser This function can be used for flow meter calibration 3 32 How to use the batch process controller The flowmeter has a batch process controller built in It can be used for flow quantity control or the batching of specific volumes This batch controller utilizes the keypad or the rising edge or falling edge of an analogue input signal as its control signal input or triggering signal It utilizes the OCT or relay as its output When using analogue as the input signal the input current must be larger than 2mA to indicate a logic 1 and OmA to indicate a logic 0 The user needs to select the type of input control signal in menu M80 The user also needs to select the output type to be item 8 output as batch controller in M78 for OCT output or in M79 for relay output Use M81 to enter batch value After completion the display will be in batch control mode and the batch controller is waiting for triggering signal If you selected O Key Input as the triggering source in M80 you may press the ENT key to start the batch process Otherwise just wait the specified triggering event is detected Refer to the next chapter for M80 and M81 details 3 33 How to calibrate the analogue output In
53. is will convert the 4 20mA current signal into 1 5V voltage signal 3 18 How to use the Frequency Output All the flow meters have Frequency Output functionality This frequency output signal which represents the flow rate is intended to connect with other instruments The Frequency Output is totally user configurable Usually four parameters should be configured Enter the lower limit of flow rate in window M68 and the higher limit of flow rate in window M69 Enter the frequency maximum and minimum in window M67 For example assume that the flow rate varies in a range from Om3 h to 3000m3 h and the required output signal frequency should be in a range from 200Hz to 1000Hz The user should enter 0 in M68 and 3000 in M69 and enter 200 and 1000 in window M67 Please note that the user needs to select the frequency output option the 13 option FO output in window M78 The user must also make the OCT hardware connection to the device which is supposed to use the frequency output signal Refer to Appendix 89 1 for wiring information 3 19 How to use the Totaliser Pulse Output The flow meter is able to produce a pulse output every time when it reaches a unit flow of liguid This pulse could be used by an external pulse counter to accumulate the flow rate Refer to 83 4 and 83 5 for the setup of the totaliser units and multiplier The totaliser pulse output can only be transmitted through OCT or relay devices Therefore it is necessary
54. l energy measurement RTU The maximum transmission distance is 15m for RS232C and 1000m for RS485 If longer distance is needed current loop MODEM GSM can serve the purpose All the flow meter operations can be made on a remote computer except the modification of IDN which can only be done locally through the flow meter s keypad The communication protocol is based on master slave principle Master remote computer sends a command slave the flow meter responses the command You may use the Hyper Terminal software in your computer to send commands to and view responses from the flow meter Please refer to your computer s manual on how to configure the Hyper Terminal Note that the COM port settings need to match those in menu window M62 6 1 RS232 Connector Pin out Definition Not Used RXD TXD DTS GND DSR 5V Not Used Ring input for connecting a modem 5 L WD C9 J O C E 09 P9 KA iO O lt OY Ui S UNE FIGURE 5 RS232 WIRING DIAGRAM 6 2 RS232 Wiring Refer to Figure 6 1 for connecting the flow meter to a remote computer through RS232 Lines 2 and 3 of the connecting cable are crossed over Note that the regular RS232 cable obtained in the stores cannot be used directly You need to make modification according to Figure 6 1 Consult the User s Manual of your computer for RS232 wiring as well 6 3 Communication Protocol The protocol is comprised of a set of basic commands that are strings in ASCII form
55. n a network environment should have a unique IDN Please refer to chapter 6 for communications M47 System locker to avoid modification of the system parameters Contact the manufacturer if the password is forgotten M48 Keypad locker to avoid any operation errors by unauthorized personnel Contact the manufacturer if the password is forgotten M49 Communication tester M50 Window to configure the scheduled output function To turn on the function select YES The system will ask for selecting the output data items There are 15 data items available Turn on all the items you want to output M51 M52 M53 M54 M55 Window to setup the time of the scheduled output function This includes start time time interval and lasting period Minimum time unit is second Maximum time interval is 24 hours Used for analogue input Al5 Display the current loop value and corresponding temperature pressure liquid level of analogue input channel Al5 Used for analogue input Al5 Set the minimum and maximum values of temperature pressure liquid level which correspond to input current of 4mA and 20mA Select the current loop CL mode Available options 0 4 20mA Output Mode set up the output range from 4 20mA 1 0 20mA Output Mode set up the output range from 0 20mA 2 RS232 controls 0 20mA set up to control by Serial Port 3 Turn off the current loop turn off the current loop to save battery life Default 4
56. n is selected you need to enter a value which indicates how many seconds the backlight will be on with every key pressing LCD contrast control The LCD will become darker when a small value is entered M70 M71 Working timer It can be reset by pressing ENT key and then select YES Alarm 1 lower threshold setup When flow rate is below this threshold the Alarm 41 OCT circuit or relay will be activated There are two alarming methods OCT and relay User must select the alarming output method in window M78 or M79 Alarm 41 upper threshold setup When flow rate is above this threshold the Alarm 1 OCT circuit or relay will be activated There are two alarming methods OCT and relay User must select the alarming output method in window M78 or M79 Alarm 2 lower threshold setup When flow rate is below this threshold the Alarm 42 OCT circuit or relay will be activated There are two alarming methods OCT and relay User must select the alarming output method in window M78 or M79 Alarm 42 upper threshold setup When flow rate is below this threshold the Alarm 42 OCT circuit or relay will be activated There are two alarming methods OCT and relay User must select the alarming output method in window M78 or M79 If a proper input source is selected the buzzer will beep when the trigger event occurs The available trigger sources are 0 No Signal 9 POS Int Pulse Poor Signal 10 NEG Int Pulse Not Ready 11 NET
57. n the above table to have the retuming data followed with two bytes of CRC check sum which is the adding sum of the original character string Take command DI CR Return POS Totaliser Value as an example The binary data for DI CR is 44H 49H 2BH and ODH Assume the return value of this command is 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 the P prefixed command PDI CR would return 1234567E 0m3 F7 CR LF The T acts as the starter of the check sum F7 which is obtained by adding up the string 2BH 31H 32H 33H 34H 35H 36H 37H 45H 2BH 30H 6DH 33H 20H 2 F7H Please note that it is allowed to not have data entry or to have SPACES 20H character before the character 2 Prefix W The prefix W is used for networking commands The format of a networking command is W IDN address string basic command The IDN address should have a value between 0 and 65534 except 13 0DH 10 OAH 42 2AH 38 26H amp For example if you want to visit the instantaneous flow velocity of device IDN 12345 the following command should be sent to this device W12345DV CR The corresponding binary code is 57H 31H 32H 33H 34H 35H 44H 56H ODH 3 Prefix N The prefix N is a single byte IDN network address not recommended in a new design 4 Command binder amp The amp command binder or connector can connec
58. nce 0 1kQ Accuracy 0 1 Isolated OCT output for frequency output 0 9 999Hz alarm driver or totaliser pulse output ON OFF control etc Relay output 1A 125VAC or 2A 30VDC For ON OFF control alarm driver totaliser output etc Internal Alarm Buzzer user programmable External Alarm Driver alarm signal can be transmitted to Relay or OCT output terminals to drive an external alarm RS 232 serial port Input Five channel 4 20mA current inputs for signals such as temperature pressure liquid level and etc Accuracy 0 1 Two of the five input channels are wired to terminal blocks The remaining three channels are optional Others Capable of offline compensation for flow totaliser automatic manual selectable Self diagnosis Automatically record the following information e The totaliser data of the last 64 days 64 months 5 years e The power on time and corresponding flow rate of the last 64 power on and off events Allow manual or automatic flow loss compensation The instrument working status of the last 64 days Enclosure Die cast aluminum enclosure Protection Class IP65 NEMA 4X Weather resistant Size 9 88 x7 56 x3 15 251x192x80mm for standard version Clamp on S1 type for pipe size 1 2 4 DN15 DN100mm M1 type for pipe size 2 28 DN50 DN700mm L1 type for pipe size 11 240 DN300 DN6 000mm S1H type for pipe size 1 2 4 DN15 DN100mm 0 C 160 C M1H type for pipe size 2 28
59. nd downstream traveling Normally the delta time should not fluctuate over 20 If it does the system is not in stable condition You need to check your transducer installation and the entered installation parameters For small pipe the transit time value may not be stable In such case try to adjust transducer position until the transit time becomes stable Display the Reynolds number and the pipe factor used by the flow rate measurement program Pipe factor is calculated from the line averaged velocity and cross section averaged velocity information Upon entering into this window the circular display function is started automatically The following windows will be displayed one by one each window will stay for about 4 seconds M95 2M00 gt M01 gt M02 gt M03 gt M04 gt M05 gt M06 gt MO7 gt MO8 gt M09 gt M90 gt M95 This function allows the user to visit all the important information without any manual action To disable the function simply switch to anther window Not used Not used Not used M 1 View the last 64 records of power on and off events The recorded information include the date and time as well as the corresponding flow rate when the power on or off occurs Display the total working time of the instrument since the flow meter left the factory M 2 Display the date and time of the last power off event Display the flow rate of the last power off e
60. nic couplant can be silicon epoxy grease or Vaseline Silicon can last for a long time and is thus normally recommended Please read the instructions on those products carefully before using them manufactory will not be responsible for any consequences caused by these products 9 3 Standard Pipe Dimensions As pipe dimensions can vary between countries and standards please search pipe manufacturers on line in your country for standard charts 9 4 Sound Speed Tables Table 9 5 1 Sound Speed in Water at atmosphere pressure Unit t C v m s 27 52 1544 6 53 1545 5 1421 6 29 15067 15464 79 1554 6 1426 1 30 15090 55 15473 80 1554 4 1430 5 31 56 1548 1 81 1554 2 1548 9 1549 6 63 Ls 65 ZE EN EA E EN EH 7 E ELS EA ES ICH CH 67 1554 0 68 1554 3 3 3 wm e pee p e us s s MN 47 1485 3 15549 96 72 1555 0 73 1555 0 Table 9 5 2 Sound Speed and Viscosity Data of Liguids Sound Speed Kinematic Viscosity 4 H 6 Liquids 25 C 77 F X 10 Acetaldehyde Alcohol 1 180 3 870 Lc oe Alcohol 1 207 3 960 1 396 15 02 Aviation kerosene 1 298 4 257 Ethanol 1 207 3 690 14 956 4 389 8 8 575 Ethyl benzene 1 586 68 F 63 F Ethylene chloride 1 193 3 914 6 563 Ethylene trichloride 1 050 3 444 fo Ie Gasoline 0 8 Gasoline 66 un sei o o y Gasoline 802 1 139 3 736 Glycol 1658 5 439 6 aaea sed we sm Glycerin 1 904 6 246 7 75
61. nstallation Switch to menu window M90 and then M91 Check the readings of the triplet signal strength S signal guality O and transit time ratio R Make sure they are at least in the operational ranges S260 Q260 97 SR s 103 Operational Ranges Optimal Ranges S280 Q280 99 SR s 101 Note that when flow velocity is very high the range for R may be In ideal case where pipe condition and fluid condition are favourable for sound propagation the triplet readings could be fine turned into the optimal ranges If your triplet readings are not close to their optimal ranges or even not in their operational ranges you need to adjust your transducer installation slightly and slowly until you get the best readings If you are unable to get the triplet into their operational ranges no mater how hard you try then you may need to check all the parameters you entered in menu windows M11 to M24 Make sure those values are correct Whenever you make a change to those parameters you need to check the transducer spacing reading in menu M25 If the spacing is changed you need to reinstall the transducers accordingly If you still cannot get the right triplet readings check the following Is the pipe too old Too much deposition inside of the pipe Too much corrosion Too much air bubble Too thick liner Empty or half full pipe Too close to pump valve elbow Please refer to section 82 11 for more suggestions Note Ultraso
62. on Dimension pumps valves etc on the upstream the Lra HR S reer ete Diameters y S Diameters straight pipe length should be increased Cup t dn refer to the table on the right for more C rian 10D 5D details The disturbance strength are in m aa the following order low to high Single E M S 10D 5D Bend Pipe Reduction Enlargement L L Outflow Tee gt Same Plane Multiple s e Hn 5D Bends Inflow Tee Out of Plane Lup Lan Multiple Bends gt Valve gt Pump 2 i D neb ap 6 Make sure that the temperature on the E ET N 20D 5D location does not exceed the range for p bus l x lt the transducers Generally speaking the PR e 20D 5D closer to the room temperature the Lup L dn better e SETE ee 30D 5D 7 Select a relatively new straight pipe line if it is possible Old pipe tends to have corrosions and depositions which could affect the results If you have to work on an old pipe we recommend you to treat the corrosions and depositions as if they are part of the pipe wall or as part of the liner For example you can add an extra value to the pipe wall thickness parameter or the liner thickness parameter to take into account the deposition 8 Some pipes may have a kind of plastic liner which creates a certain amount of gaps between liner and the inner pipe wall These gaps could prevent ultrasonic waves from direct travelling Such conditions will make the measurement very diff
63. orrect Zero Point setting The user may have conducted the Zero Point setup while the flow was not standstill To solve this problem use the Reset Zero function in menu window M43 to clear the zero point 2 Q The displayed flow rate is much lower or much higher than the actual flow rate in the pipe under normal working conditions Why A The entered offset value might be wrong Enter 0 offset in window M44 a Incorrect transducer installation Re install the transducers carefully b The Zero Point is wrong Go to window M42 and redo the Zero Point setup Make sure that the flow inside the pipe is standstill No velocity is allowed during this setup process 3 Q Why there is no signal The installation requirements are met pipe is new and pipe material is in good guality A Check the following a Is the installation method suitable for your pipe size b Are the entered installation parameters correct c Are the wirings correct d Adeguate couplant Transducers are in good contact with pipe e Is pipe full f Is the transducer distance in consistency with the one shown in M25 g Is transducer head tail in the right direction 4 Q How to conduct measurement on an old pipe Heavy scale inside no signal or poor signal detected A a Check if the pipe is full of liquid b Try Z method If the pipe is close to a wall and it is hard to do Z method installation you may work on a ver
64. perature data from window MO6 Example 2 assume a pressure transmitter outputs current 4mA at 0 98kg pressure and 20mA at 10 5kg pressure The transmitter is connected to channel AI3 Then you need to enter 0 98 and 10 5 in window M65 The present values of input current and corresponding temperature are shown in MOT If you find the current value from the transmitter is different from the one shown in MO6 or M07 you need to calibrate the corresponding analogue channel Please see section 83 16 for calibration detail Read Input Analogue Values from a Network Computer When the flow meter is networked all the analogue data can easily be visited from a remote computer For visiting the present analogue input current use command BA1 BA2 BA3 or BA4 For visiting the temperature pressure value represented by the analogue input current use command Al1 Al2 AI3 or Al4 8 0 WARRANTY AND SERVICE 8 1 Warranty The products manufactured are warranted to be free from defects in materials and workmanship for a period of one year from the date of shipment to the original purchaser manufactory obligation should be limited to restoring the meter to normal operation or replacing the meter at manufactory choice and shall be conditioned upon receiving written notice of any alleged defect within 10 days after its discovery manufactory will determine if the return of the meter is necessary If it is the user should be responsible for the one
65. pipe If pipe outer diameter is known skip this menu and go to menu M11 to enter the outer diameter Window for entering the outer diameter of the pipe Valid range 10 to 6000mm Note you just need to enter either outer diameter in M11 or pipe peripheral in M10 Window for entering pipe wall thickness You may skip this menu and enter inner diameter in M13 instead Window for entering the inner diameter of the pipe If pipe outer diameter and wall thickness are entered correctly the inner diameter will be calculated automatically thus no need to change anything in this window Window for selecting pipe material M14 Standard pipe materials no need to enter the material sound speed include 0 carbon steel 1 stainless steel 2 cast iron 3 ductile iron 4 copper 5 PVC 6 aluminum 7 asbestos 8 fiberglass epoxy 9 Other need to enter sound speed in M15 M15 Window for entering the sound speed of non standard pipe materials M16 Window for selecting the liner material Select none for pipes without any liner Standard liner materials no need to enter liner sound speed include 1 Tar Epoxy 2 Rubber 3 Mortar 4 Polypropylene 5 Polystryol 6 Polystyrene 7 Polyester 8 Polyethylene 9 Ebonite 101 Teflon 11 Other need to enter sound speed in M17 M17 Window for entering the sound speed of non standard liner materials M18 Window for entering the liner thickness if there is a liner M19 M20 Window for
66. put alarm output analogue inputs Besides there are also windows for configuring analogue inputs date time and day month year accumulator M90 M94 windows for displaying diagnostic data including the installation triplet Those data are very useful when doing a more accurate measurement M95 Upon entering into this window the circular display function is started automatically The following windows will be displayed one by one each window will stay for about 4 seconds M95 gt M00 gt M01 gt M02 gt M03 gt M04 gt M05 gt M06 gt MO7 gt MO8 gt MO9 gt M90 gt M95 M 0 M 9 windows for some additional functions including a single precision calculator display of the total working time and display of the time and the flow rate when the device is turned on and turned off Other menu windows are used for factory debugging For detailed explanation of the above windows please refer to chapter 3 How to and chapter 4 Menu Window Details 2 7 Steps to Configure the Parameters In order to make the flow meter work properly the user must follow the following steps to configure the system parameters 1 Pipe size and pipe wall thickness For standard pipe please refer to Appendix 89 4 for outer diameter and wall thickness data For non standard pipe the user has to measure these two parameters 2 Pipe materials For non standard pipe material the sound speed of the material must be entered Please
67. r Spacing The flowmeter will calculate the transducer spacing for you All you need to do is to enter all the installation information including installation method pipe parameters fluid parameters etc through menu windows M11 M24 The spacing value will be displayed on menu window M25 The transducer spacing is referred to the distance between the two ends of the two transducers see the figure on the right 9 2 3 Prepare the Pipe Surface Locate the installation site according to the site selection rules suggested in section 2 8 Based on the transducer spacing obtained in the above step approximately mark the area of the pipe surface where the transducers will be mounted Clean the marked area Remove rust and paint Sand the surface if not smooth Use wet cloth to wipe off the powder after sanding Dry up the surface A dry clean surface will ensure a good acoustic bond between transducer and pipe Based on the transducer spacing accurately mark the transducer installation spots on the pipe surface Make sure the two spots are in the cleaned area 9 2 4 Prepare the Transducers Clean the transducer surface Keep the surface dry Apply a wide band of ultrasonic couplant down the centre of each transducer face as shown on the right figure Also apply a band of couplant on the pipe surface If the couplant is very sticky you may need to slightly massage the pipe surface with the couplant so that the couplant can fill
68. rocess controller 0 Key ENT down 4 Al2 Falling Edge Al1 Rising Edge 5 AI3 Rising Edge 2 Al1 Falling Edge 6 AI3 Falling Edge 3 AI2 Rising Edge 7 Al4 Rising Edge For the input analogue current signal OmA indicates 0 and 20mA indicates 1 For batch process controller Set the flow batch value dose M81 and M80 should be used together to configure the internal batch process controller View the daily monthly and yearly totaliser values The flow total data of the last 64 days last 64 months and last 5 years are saved in memory Use this should be the UP arrow or V to display them The first line on the screen has a dash line Be aware if there is other letter after the dash line If a G appeared the system gained was adjusted automatically at least once This could happen when the flow meter was offline once on that day If a H appeared poor signal was detected at least once It indicates that there was interference or the installation was not good Refer to the next chapter for diagnosis information Automatic Amending function for automatic offline compensation Select YES to enable this function select NO to disable it 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 totaliser The estimation of the uncounted flow is made by computing the product of the offline time period
69. selecting fluid type For standard liquids no need to enter liquid sound speed include 0 Water 1 Sea Water 2 Kerosene 3 Gasoline 4 Fuel oil 5 Crude Oil 6 Propane at 45C 7 Butane at OC 8 Other need to enter sound speed in M21 and viscosity in M22 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 sound speed of non standard liquids Used only when item 8 Other is selected in menu M20 M22 Window for entering the viscosity of non standard liquids Used only when item 8 Other is selected in menu M20 M23 Window for selecting transducer type There are 13 types 0 Standard M 7 Not Used 1 Plug in Type C 8 Standard HS 2 Standard S 9 Standard HM 3 User Type 10 Standard M1 4 Standard B 11 Standard S1 5 Plug in Type B45 12 Standard L 1 Stand L M24 Window for selecting the transducer mounting methods Four methods can be selected 0 V method commonly used 1 Z method most commonly used 2 N method for small pipe rarely used 3 W method for small pipe M25 Display the transducer mounting spacing or distance M26 M27 M28 M29 Entry to store load the system setup parameters pipe parameters fluid parameters transducer parameters etc Three operation methods available 4 Entry to Save 5 Entry to Load 6 ToBrowse To save the current setup p
70. selection Window for selecting the totalisers unit Available unit options are the same as those in M31 M32 M33 Window for setting the totaliser multiplying factor The multiplying factor ranges from 0 001 to 10000 Factory default is 1 M34 Turn on or turn off the NET totaliser M35 Turn on or turn off the POS totaliser M36 Turn on or turn off the NEG totaliser M37 1 Totaliser reset 2 Restore the factory default settings Press the dot key followed by the backspace key Attention it is recommended to make notes on the parameters before doing the restoration M38 Manual totaliser used for calibration Press any key to start and press the key again to stop the totaliser M39 Not used M40 Flow rate damper setup The damping parameter ranges from 0 to 999 seconds 0 means there is no damping Factory default is 10 seconds M41 Low flow rate or zero flow rate cutoff to avoid invalid accumulation M42 Zero calibration Zero point setup Make sure the liquid in the pipe is not running while doing this setup M43 Clear the zero point value and restore the factory default zero point M44 Set up a flow bias Generally this value should be 0 M45 Flow rate scale factor Keep this value as 1 when no calibration has been made M46 Network address identification number IDN Any integer can be entered except 13 0DH carriage return 10 OAH line feeding 42 2AH 38 26H amp 65535 Every set of the instrument i
71. t up to 6 basic commands to form a longer command so that it will make the programming much easier For example assume we want device IDN 4321 to return the flow rate velocity and POS totaliser value simultaneously The combined command would be 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 4 The M command and the ASCII Codes The protocol provides the capability of virtual key pressing A remote RS 232C terminal can send an M command along with a key code to simulate the scenario that the key is pressed through the keypad of the flow meter This functionality allows the user to operate the flow meter in the office far away from the testing site For example the command M1 is sent to the flow meter through the RS 232C link the flow meter will treat the command as if the user has pressed the 1 key through the keypad The ASCII codes and corresponding key values of the keypad keys are listed in the following table T Dic deb Decimal ASCII T Hexadecimal Decimal ASCII Keycode Key code Code Key code Key code Code 0 30H 48 0 8 38H 56 8 1 31H 49 1 9 39H 57 9 2 32H 50 2 3AH 58 3 33H 51 3 4 3BH 0BH 59 4 34H 52 4 MENU 3CH 0CH 60 lt 5 35H 53 5 ENT 3DH 0
72. the latest electronics etc to achieve high accuracy and reliable performance Besides the product provides versatile output interfaces both analogueue and digital which can be easily used by a host computer or a flow controller 1 2 Features e Better than 1 linearity e Die cast aluminium weather resistant e 0 2 of repeatability enclosure standard version e 1 of accuracy at velocity above e Able to measure electrically conductive 0 6ft s 0 2m s and non conductive liquids e Positive negative net flow e RS 232 interface Complete totaliser communication protocol for instrument e Proprietary low voltage networking transmission and self adaptation e Can be used as a flow RTU technologies e 5channel 12 bits analogue 4 20mA input e Anti interference design e 1 channel programmable 4 20mA output e Dual CPU 100 Pico second time e 2 channel programmable digital output measurement resolution isolated OCT and Relay e Operates with transducers e Frequency output including clam on insertion wetted e Internal batch process controller and flow cell spool piece wetted e 2x20 letters backlight LCD display 4x4 types key tactile feedback membrane keypad 1 3 Flow Measurement Principle The ultrasonic flow meter is designed to measure the velocity of liquid within a closed conduit It uses the well know transit time measurement principle plus our proprietary signal processing and ultrasonic transceiving technolo
73. tical or inclined pipe with flow upwards c Carefully select a good pipe section and fully polish clean the installation area of the pipe surface Apply a wide band of couplant on each transducer face Install the transducer properly d Slowly and slightly move each transducer with respect to each other around the installation point until the maximum signal is found Be careful that the new installation location is free of scale inside the pipe and that the pipe is concentric not distorted so that the sound waves do not bounce outside of the proposed area e For pipe with thick scale inside or outside try to clean the scale off if it is accessible from the inside Note Sometimes this method might not work and sound wave transmission is not possible because of the layer of scale between the transducers and pipe inside wall 5 Q Why no current in the current loop output A Check if the current output mode is set correct in M55 You need to turn the current loop on in M55 Check the hardware connection open the electronics enclosure check to see if the short circuit terminal near terminal 22 is in place between 1 2 i e Direct Output Mode Note that positions 2 3 are used for Transmitter Mode in which an external power supply is needed for the current loop output 6 Q Why is the current output not correct A a Check if the current output mode is set correct in M55 b Check the upper and lower current settings in M
74. to configure the OCT or relay This can be done in menu M78 and M79 Refer to the next chapter for detail on M78 and M79 For example assume that we need to output the POS totaliser through the relay in pulse form and every pulse represents 0 1cubic meter of liguid flow The following steps must be performed 1 Select the Cubic Meter m3 unit in window M32 2 Select the Multiplier factor as 2 X0 1 in window M33 3 Select the output option 9 POS INT Pulse in window M77 INT stands for integrated or totalized Note that the totaliser pulse must be set properly It should be neither too large nor too small If it is too large e g long period the output pulse will be very slow If it is too small e g short period the relay may activate too frequently and its lifetime may be shortened Besides pulse loss error may occur It is recommend to be within 1 60 pulse minute You can adjust the pulse period by selecting different totaliser multiplier factor in M33 3 20 How to produce an alarm signal There are two types of hardware alarms that are available with this instrument One is the audible alarm and the other is the ON OFF output signal which can drive an alarm The audible alarm is also called Buzzer It is generated internally and can be configured in M77 The ON OFF output signal is generated through the OCT or relay output which is connected to an external alarm circuitry The triggering sources of the alarming events
75. to output a Fdddd CR LF frequency of dddd Hz Aoa CR Output current a at the current AOa CR LF loop output terminal BA1 CR Return current value of Al1 0 d ddddddE dd CR LF 20mA BA2 CR Return current value of Al2 0 d ddddddE dd CR LF 20mA BA3 CR Return current value of AI3 0 d ddddddE dd CR LF 20mA BA4 CR Return current value of Al4 0 d ddddddE dd CR LF 20mA AI1 CR Return temperature pressure d ddddddE dd CR LF value of Al1 Al2 CR Return temperature pressure d ddddddE dd CR LF value of Al2 AI3 CR Return temperature pressure d ddddddE dd CR LF value of Al3 Al4 CR Return temperature pressure d ddddddE dd CR LF value of Al4 ESN CR Return the electronic serial dddddddt CR LF number ESN of the flow meter W Prefix of an IDN addressing based networking command The IDN address is a word ranging O 65534 N Prefix of an IDN addressing based R networking command The IDN address here is a single byte value ranging 00 255 P Prefix of any command with checksum amp Command binder to make a longer command by combining up to 6 commands MODEM RING CR LF Handshaking Reguest from a ATA CR LF MODEM OK CR Acknowledgement from a No action Handshaking Request from a Flow meter AT CR LF GA CR A Command for GSM messaging Please contact the manufacturer for bi detail GB CR B Command for G
76. tocoupler Terminals i Isolation Rx The OCT output is an ON OFF type electrically isolated collector open circuit output It is user configurable You can program it to be an ON OFF type alarm signal or a totaliser pulse signal External Alarm Or Relay Control Notice that the Frequency Output shares the same d OCT hardware When used as Frequency Output the OCT cannot be used for other purpose neither alarm signal nor totaliser pulse signal The OCT has two wiring terminals terminals 61 and 62 Terminal 61 is collector and terminal 62 is emitter Be careful of the polarity An external DC power supply Vx and an external pull up resistor Rx are needed for using the OCT Figure 3 Vx can be from 8VDC to 24VDC Rx can be from 1KOhm to 10KOhm The OCT can drive an alarm pulse counter frequency counter etc It can also be used to drive a relay which operates a valve system for instance Refer to the next chapter on menu M78 for OCT configuration 3 22 How to use th relay epe output Terminals The relay output is a single pole single throw SPST normally ON output device Its maximum operating frequency is 1Hz Its load current is 1A at 125VAC or 2A at 30VDC External Alarm The relay output is user configurable and can be configured as an ON OFF type alarm signal or a totaliser pulse signal Its signal is sent to terminals 71 and 72 which can be connected to a remote counter or alarm device Figure 4 Ref
77. tput current 20 4 20mA Mode 20 0 20mA Mode 0 20m Mode Output current Output current Output current 24mA 20mA Fluid velocity 4 20mA Mode 0 4 20mA Mode 4 20mA Mode Flow Velocity 4mA or OmA output value Set the flow rate value which corresponds to 4mA or OmA output current 4mA or OmA is determined by the settings in M55 The flow unit options are the same as those in M31 If velocity 4 20mA is selected in M55 the unit should be set to m s 20mA output value Set the flow rate value which corresponds to 20mA output current Refer to M31 for flow unit options Current loop verification Check if the current loop has been calibrated before leaving the factory Press ENT and use W or V j to display OmA 4mA 24mA one after another For each one check with an ammeter to verify that current loop output terminals agree with the displayed values It is necessary to re calibrate the current loop if over the permitted tolerance For more information refer to section 83 29 for analogue output calibration Display present output of the current loop circuit Re calibration is needed if the displayed value differs significantly from the actual output value measured with an ammeter Set up system date and time Press for modification Use the dot key to skip the digits that need no modification Display software version information and Electronic Serial Number ESN that are
78. u replace the fuse Otherwise they may be damaged by static discharge Wiring diagram FLY LAdNI YNY SLY AVTJA LAdNI YNY LAdLNO LAdLNO UPSTREAM DOWNSTREAM TRANSDUCER TRANSDUCER 21 22 23 24 e z OD OD 3 3 S88 g z p E S 399 8 c m D 5 gt gt 2 d 3 F RS232 i gt gt 2 g 2 3 d 223 5 Bg S 9 i m 8 86 8 5 Q PULL UP og 89 z o RESISTOR 1 10kQ ca z m Z om m zi m o AE o Oo x a a xt z A gt E o E A z D Outline diagram 251 Unit mm Thickness 100 192 9 2 Clamp on Transducer Installation Guide 9 2 1 Choose Installation Method The following three installation methods are often used in normal applications Select the right installation method according to your pipe size V Clamp Fixture V method Installation V method installation is commonly used with pipe diameters ranging from 1 2 15mm to 4 Downskean n Seeing SE R g Transducer Transducer 100mm It is also called reflective method Z method Installation Down stream transducer Z method is commonly used when the pipe diameter is between 4 100mm and 240 6 000mm This is method often yields the H CO best signal return spacing Upstream transducer W method Installation hmg Puzl 6 W method is used on plasticl pipes with p za t pipe diameter1 2 4 15mm 100mm f H K UC su zn gt Jpvavci bera et s Tear thw 9 2 2 Transduce
79. u windows on your flow meter while reading this chapter for the sake of easy understanding Note 2 To quickly switch to a menu window just press MENU followed by the window number a two digit number To move from one window to the next use A H or V key Menu window No M00 M01 M02 M03 M04 M05 M06 M07 M08 M09 M10 M11 M12 M13 Function Display flow rate and net totaliser value If the net totaliser is turned off in M34 the net totaliser value shown on the screen is the total prior to its turn off Display flow rate and velocity Display flow rate and POS positive totaliser Select the positive totaliser units in menu M31 If the POS totaliser is turned off its value shown on the screen is the total prior to its turn off Display flow rate and NEG negative totaliser Select the negative totaliser units in M31 If the NEG totaliser is turned off its value shown on the screen is the total prior to its turn off Display the current date time and flow rate The time setting method is found in M60 Display Instantaneous Caloric and Totalized Caloric Display Analogue Input AI1 AI2 current value and its corresponding temperature pressure or liquid level value System Error Codes Display the working condition and the system error codes Refer to Chapter 5 for details Display today s total NET flow Window for entering the peripheral of the
80. ufacturer No Display Erratic or Problem with wiring Double check wiring connections Abnormal Operation No response to key Keypad is locked Unlock the keypad pressing Bad plug connection Reboot repetitively Hardware problems Contact the manufacturer 5 3 Working Status Errors The ultrasonic flow meter will show an Error Code a single letter like R etc in the upper right corner on menu windows When any abnormal Error Code shows counter measures should be taken Table 5 2 Working status errors and solutions Message on window M08 Causes Solutions System Normal No error No Signal 1 Unable to receive signal 1 Polish the pipe surface and clean the spot 2 Transducers installed aiaa a improperly 2 Make sure the couplant is enough 3 Loosen contact or not 3 Make sure the transducer is in tight contact enough couplant between with pipe surface tansducetand pipe 4 Check the transducer cables surface 5 Check installation parameter settings 4 Pipe liners are too thick or the deposition inside of the 6 Find a better measurement site Newer pipe pipe is too thick no corrosion no deposition 5 Transducer cables are not properly connected Contact the manufacturer Poor Sig Detected Poor signal detected Similar to error code I Similar to error code I E Current Loop Over 4 20mA loop output over 1 Ignore it if current loop output is not used o Zu 120 2 Check current loop s
81. unique for each series flow meter The user can use the ESN for instrumentation management RS 232 configuration All the devices connected with RS232 link should have matched serial configuration The following parameters can be configured Baud rate 75 to 115 200 bps parity data bits and stop bit Al1 value range Used to enter the temperature press values corresponding to 4mA and 20mA input current The displayed values have no unit so that they can represent any physical parameters Al2 value range Used to enter the temperature press values represented by 4mA and 20mA input current Al3 value range Used to enter the temperature press values represented by 4mA and 20mA input current Al4 value range Used to enter the temperature press values represented by 4mA and 20mA input current Window to set up the frequency range lower limit and upper limit for the frequency output function Valid values 1Hz 9999Hz Factory default is 1 1001 Hz Note that the frequency signal can only be transmitted through the OCT output Therefore you need to set the OCT to be in frequency output mode Window to set up the minimum flow rate which corresponds to the lower frequency limit of the frequency output Window to set up the maximum flow rate which corresponds to the upper frequency limit of the frequency output LCD backlight control Available options Always OFF Always ON and Lighting For When Lighting For optio
82. vent Display the total number of times the flow meter has been powered on and off since the flow meter left the factory A scientific calculator for the convenience of field applications All the values are in single accuracy All the mathematic operators are selected from a list The calculator can be used while the flow meter is conducting flow measurement M 6 Set fluid sound speed threshold When the estimated sound speed M92 exceeds this threshold an alarm signal will be generated and transmitted to OCT or relay This function can be used to generate an alarm when fluid material changes Display the received signal In normal condition this signal should be stable and signal amplitude does not vary much Display the present temperature values integer portion of analogue input Al1 and Al2 Display water heat capacity at this temperature Entry to hardware adjusting windows Valid for the manufacturer only 5 0 TROUBLESHOOTING 5 1 Introduction The flowmeter series flow meters utilized high reliability design thus their malfunction probability is guite low However due to improper settings harsh environment or misusage problem could occur Therefore flowmeter is eguipped with a complete set of self diagnosis functions The errors are displayed in the upper right corner of the menu window via identification code in a timely order Hardware self diagnosis is conducted every time when power is on Some errors can even b
83. w to use the damper to stabilize the flow rate The damper acts as a filter for a stable reading Its damping constant is entered in window M40 Its unit is in second If 0 is entered that means there is no damping A bigger constant number brings a more stable effect But bigger numbers will prevent the instrument from acting quickly A constant from 5 to 30 is commonly used for the damper value 3 10 How to use the low flow cut off function The value displayed in window M41 is the low flow cut off When the absolute value of the measured flow velocity is below this value the measured velocity as well as flow rate will be replaced with 0 This is to avoid any invalid accumulation when the actual flow is below the low flow cut off value Application example when a pump is shut down the liquid will not stop immediately It will keep moving may be backward for a little while During this period the totaliser should be prevented from accumulating This can easily be done by setting the low flow cut off velocity to a certain value such as 0 1ft s 0 03m s The low flow cut off operation does not affect the flow measurement when the actual flow is greater than the low flow cut off value 3 11 How to conduct zero calibration When the flow in a pipe is absolutely stopped the flow meter could still give a small non zero flow rate reading In order to make the measurement accurate it is necessary to remove this zero point readin
84. ximum current 20mA of channel Al2 Menu window M84 thermal unit selection KCAL s Kilocalories second GJ s Giga Joules second Menu window M85 temperature source selection 0 temperature from input Al1 and Al2 1 fixed difference When selecting fixed difference enter the difference in this menu Menu window M86 specific heat or thermal capacity coefficient input Menu window M87 thermal totaliser on off switch Menu window M88 thermal totaliser multiplier factor Menu window M89 thermal totaliser reset Note that if the fluid temperatures at both supply and return points are stable you may choose not to use temperature transmitters Instead you can directly enter the temperature difference of the two points on menu window M85 7 4 7 5 Configure Analogue Measurement Ranges Temperature pressure and other signals are entered into the flow meter through analogue channels Al1 Al4 Their measurement ranges can be set on windows M63 M66 The first number of these windows is the minimum of the measurement range corresponding to an analogue input of 4mA The second number is the maximum corresponding to 20mA input current Example 1 assume a temperature transmitter provides 4mA at 10 C and 20mA at 150 C And this transmitter is connected to channel Al1 Then you need to enter 10 and 50 at menu window M63 for the first and second numbers respectively You can view the present current signal value and corresponding tem

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