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Ultrasonic Flow Meter User Manual

Type: LRF-2000S

LONGRUN INDUSTRIAL INSTUMENT CO.,LTD

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Summary of Contents for LRF-2000S

Page 1: ...Ultrasonic Flow Meter User Manual Type LRF 2000S LONGRUN INDUSTRIAL INSTUMENT CO LTD...

Page 2: ...2 Transducers Spacing 12 2 6 3 V method Installation 12 2 6 4 Z method Installation 13 2 6 5 W method Installation 13 2 6 6 N method Installation 14 2 7 Installation Checkup 14 2 7 1 Signal Strength 1...

Page 3: ...31 4 23 How to use the manual totalizer 32 4 24 How to know how long the battery will last 32 4 25 How to check the ESN and other minor details 32 4 26 How to use the data logger for scheduled output...

Page 4: ...of non fouling operation and easy installation The LRF 2000S transit time flow meter utilizes two transducers that function as both ultrasonic transmitters and receivers The transducers are clamped o...

Page 5: ...mm 1 5 Typical application The wall mounting 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 p...

Page 6: ...t iron cement pipe copper PVC aluminum FRP etc Liner is allowed Size 15 6000mm Straight pipe section In the upstream it must be beyond 10D in the downstream it must be beyond 5D in the upstream the le...

Page 7: ...o enter numbers Key is the going UP key when the user wants to go to the upper menu window It also works as the key when entering numbers Key is the going DOWN key when the user wants to go down sided...

Page 8: ...play Velocity Flow Rate etc For number entering windows the user can directly press the starting digit key when the user is going to modify the value For example when the current window is on M11 and...

Page 9: ...NT key 3 Press key to enter M14 window and press ENT key to enter the option selection mode Use keys and to scroll up and down to the intended pipe material and then press ENT key 4 Press key to enter...

Page 10: ...in order to obtain a more accurate measurement For this to be completed effectively a basic knowledge about the piping and its plumbing system would be advisable An optimum location would be defined a...

Page 11: ...nsducers used by the LRF 2000 series ultrasonic flow meter are made of piezoelectric crystals both for transmitting and receiving ultrasonic signals through the wall of liquid piping system The measur...

Page 12: ...window M25 refers to the distance of inner spacing between the two transducers The actual transducers spacing should be as close as possible to the spacing value 2 6 3 V method Installation V method i...

Page 13: ...EXPERT www ultrasonicscn com 13 2 6 4 Z method Installation Z method is commonly used when the pipe diameter is above 200mm 2 6 5 W method Installation W method is usually used on pipes with a diamet...

Page 14: ...gnal detected and 99 9 refers to the maximum signal strength that can be received Although the instrument works well if the signal strength ranges from 50 0 to 99 9 stronger signal strength should be...

Page 15: ...tion If the pipe parameters are entered correctly and the transducers are installed properly the value for this ratio should be in the range of 100 3 If this range is exceeded the user should check 1...

Page 16: ...on the screen is the value prior to its turn off Select all totalizer unit in menu M31 M01 Display flow rate velocity M02 Display date time and POS positive totalizer If the positive totalizer is tur...

Page 17: ...liner sound speed in M17 M17 Window for entering the non standard liner material speed M18 Window for entering the liner thickness if there is a liner M19 Window for entering the ABS thickness of the...

Page 18: ...to the flash memory so that these parameters will be solidified and will be loaded as the default parameters every time when power is turned on M27 Entry to store to or restore from the internal Flash...

Page 19: ...Enter 2 39 for the auto scan mode In the auto scan mode the display will automatically scan displaying from 00 to the entered number of the local segmental LCD display M40 Flow rate damper for a stabl...

Page 20: ...4 20mA current loop or CL mode Available options 0 4 20mA output mode setup the output range from 4 20mA 1 0 20mA output mode setup the output range from 4 20mA This mode can only be used with Versio...

Page 21: ...lue that corresponds to the upper frequency limit of the frequency output M70 LCD display backlight control The entered value indicates how many seconds the backlight will be on with every key pressin...

Page 22: ...Relay or OCT2 setup By selecting a proper input source the RELAY will close when the trigger event occurs The available trigger sources are 0 No Signal 1 Poor Signal 2 Not Ready No R 3 Reverse Flow 4...

Page 23: ...h value dose The internal output of the batch controller can be directed either to the OCT or the RELAY output circuits M81 and M80 should be used together to configure the batch controller Note Becau...

Page 24: ...calculated based on the ratio of the line average velocity and the cross section average velocity M95 1 Display the positive and negative energy totalizers 2 Upon entering this window the circular di...

Page 25: ...tal flow for this year only for the time past M 9 Display the not working total time in seconds The total failure timer will also include the time when power off if the back up battery is applied M 2...

Page 26: ...e flow meter is adjusting system gain This is normal as far as it does not last long time If an I is displayed it means that there is no signal detected If J is displayed there is hardware problem Tur...

Page 27: ...restore the flow meter with default setups Use M37 when the selection message is displayed Press the dot key first and the message Master Erase will display then press the backspace key The master era...

Page 28: ...the scale factor in menu window M45 The scale factor can be determined by calibration with flow calibration equipment 4 13 How to use the system locker The system locker provides a means of preventing...

Page 29: ...e 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 The present current...

Page 30: ...tput Both for the Buzzer and OCT output the triggering sources of the event include the following 1 There is no receiving signal 2 There is poor signal received 3 The flow meter is not in normal measu...

Page 31: ...e and the terminal is at Pin 1 and 8 4 20 How to modify the built in calendar No modification on the built in calendar will be needed in most cases The calendar runs on insignificant amount of power s...

Page 32: ...n window M 1 and the total power on times displayed in window M 4 4 26 How to use the data logger for scheduled output Use menu window 51 to setup the time of scheduled output including start time tim...

Page 33: ...r power off and the password will become invalid then Press keys MENU 1 to adjust the 4mA current output use precision ammeter to measure the output current at the same time use to adjust the digital...

Page 34: ...unction is closed The menu can realize almost 12 parts linearity correcting The user can choose from two points to twelve points to execute the linearity correcting according to user actual condition...

Page 35: ...g with the reverse curve of the data following the original amendment then input to the Instrument Reverse amendment is very complicated and should be avoided 4 37 How to save restore frequently used...

Page 36: ...hick 5 Transducer cords are not properly connected 1 Relocate measuring location 2 Clean the spot 3 Check the cords J Hardware Error Hardware problem Contact the factory H PoorSig Detected 1 Poor sign...

Page 37: ...atisfactory value The problems are likely caused by the user who has used the Set Zero function on this non standstill flowing pipe To solve this problem use the Reset Zero function on menu window M43...

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