Long-run LRF-2000M User manual

Ultrasonic Flow Meter User Manual
Type: LRF-2000M
LONGRUN INDUSTRIAL INSTRUMENT CO.,LTD

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Contents
1. Must-knows about LRF-2000M .....................................................................................4
2. Introduction to new generation LRF-2000M...................................................................5
2.1 Development introduction ....................................................................................5
2.2 Features .............................................................................................................6
3. On Board Segmental LCD display Details.......................................................................8
4. Menu Window Details................................................................................................12
5. Begin to mount and measure .....................................................................................22
5.1 Steps to Configure the Parameters......................................................................22
5.2 Transducers Mounting Allocation.........................................................................24
5.3 Transducers Installation .....................................................................................25
5.3.1 Wiring diagram of transducer.....................................................................26
5.3.2 Transducers Spacing .................................................................................26
5.3.3 V-method Installation................................................................................26
5.3.4 Z-method Installation ................................................................................27
5.3.5 W-method Installation...............................................................................27
5.3.6 N-method Installation................................................................................27
5.4 Installation Checkup ..........................................................................................28
5.4.1 Signal Strength .........................................................................................28
5.4.2 Signal quality............................................................................................28
5.4.3 Time Ratio between the Measured Total Transit Time and the Calculated Time
.......................................................................................................................29
6. How To....................................................................................................................29
6.1 How to judge if the instrument works properly.....................................................29
6.2 How to judge the liquid flowing direction.............................................................30
6.3 How to change between units systems................................................................30
6.4 How to select a required flow rate unit................................................................30
6.5 How to use the totalizer multiplier.......................................................................30
6.6 How to open or shut the totalizers ......................................................................30
6.7 How to reset the totalizers .................................................................................31
6.8 How to restore the flow meter with default setups ...............................................31
6.9 How to use the damper .....................................................................................31
6.10 How to use the zero-cutoff function ..................................................................31
6.11 How to setup a zero point ................................................................................31
6.12 How to get a scale factor for calibration.............................................................32
6.13 How to use the system locker ...........................................................................32
6.14 How to use 4-20mA current loop output ............................................................32
6.15 How to use the Frequency Output.....................................................................33
6.16 How to use the Totalizer Pulse Output ...............................................................34

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6.17 How to produce an alarm signal........................................................................34
6.18 How to use the built-in Buzzer ..........................................................................35
6.19 How to use the OCT output ..............................................................................35
6.20 How to modify the built-in calendar...................................................................35
6.21 How to view the Date Totalizers........................................................................35
6.22 How to use the Working Timer..........................................................................36
6.23 How to use the manual totalizer .......................................................................36
6.24 How to know how long the battery will last........................................................36
6.25 How to check the ESN and other minor details ...................................................36
6.26 How to use the data logger for scheduled output ...............................................36
6.27 How to output analogue voltage signal..............................................................37
6.28 How to adjust the LCD display ..........................................................................37
6.29 How to use RS232/RS485? ...............................................................................37
6.30 How to use automatic amending function for offline compensation ......................37
6.31 How to use batch controller..............................................................................37
6.32 How to adjust the analogue output ...................................................................37
6.33 How to solidify the parameters .........................................................................38
6.34 How to enter the parameters of user-type-transducer.........................................38
6.35 How to use the circular display function.............................................................38
6.36 How to enter into the linearity correcting? How to enter into the data? ................38
6.37 How to save / restore frequently-used pipe parameters ......................................40
7. Communication Protocols...........................................................................................40
7.1 The MODBUS protocol .......................................................................................40
7.1.1 MODBUS REGISTERS TABLE ......................................................................41
7.1.2 REGISTER TABLE for the DATE accumulators ..............................................47
7.1.3 REGISTER for power-on and power-off .......................................................49
7.2 The FUJI extended communication protocol.........................................................51
7.2.1Command prefixes and the command connector...........................................54
7.3 The compatible communication protocols ............................................................55
7.4 Key Value Table ................................................................................................58
8. Troubleshooting........................................................................................................58
8.1 Power-on Error Displays and Counter-Measures ...................................................58
8.2 Error Code and Counter-Measures ......................................................................59
8.3 Other Problems and Solutions.............................................................................60

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Technical Manual for LRF-2000M
This manual applies to LRF-2000M version13.44 and above.
1. Must-knows about LRF-2000M
Please read the following paragraphs when you use LRF-2000M for the first time
1. The setup of a LRF-2000M ultrasonic flow converter needs one of the three tools. The
first tool is a parallel LCD and keypad module which can be connected to the 20 Pins port.
The second tool is a serial LCD and keypad module which can be connected to the RS485
port. The third one is a PC-based software (under development), by means of the software,
the parameters that LRF-2000M needs to work properly could be downloaded by use of the
RS232 port on the PC. If your computer does not have a RS485 port, you need to buy a
RS485-RS232 converter.
2. All setup parameter data are stored in the RAM memory temporally. Users need to
solidify the parameters, when setups are been finished, that is to store the parameter to
the internal flash memory. Go to Menu26, Select the option that says “make default paras”
then pressing the ENT key will start the progress of storing. If the current parameters are
different with that in the flash memory, the system will store your current parameters into
the flash memory and then boot again. By doing so, the parameters will always be get lost,
even when both the power supply and the backup battery are removed.
3. The zero point, that is the indicated flow under the situation of motionless liquid, has a
great influence over the linearity and accuracy of the flow meter. Users should try every
possibility to perform the Zero Setup that is located at Menu 42. Zero setup should always
been performed under the condition of motionless liquids. If Zero setup was been
performed with motion of the liquid, you can use Menu 43 to restore to the original zero
point. The zero point will be stored in the RAM memory temporally when you use Menu 42.
If you want to solidify the zero point, you need to perform Menu 26 “make default paras”
function again. If this step was omitted, the system will override the RAM zero point by
restoring the zero point that is stored in the flash memory with next power-on.
4. The internal calendar is the base of date accumulators. Incorrect date and time will
cause messy records with the date accumulators. Please the user check the calendar by
input correct date and time. The calendar runs relying on the backup battery when there is
no 24VDC supply. When the battery voltage is less than 2 volts, a new backup battery
should be replaced with. Replacing the battery with a new one should be performed with
the 24VDC applied so that the accumulator data and calendar data will not get lost.
5. Please pay great attention to the power supply. The applied voltage should be in the
range of 8V to 36VDC, or 10V to 30VAC. Avoid applying an 110VAC or 220VAC power
forever, or the module will be damaged.
6. Pay attention to the display located on Menu 48, which shows the points of lines for the
linearity correction function. 0 stands for shutting off the function. The default value is 0.
Try to make sure that value is 0 so as to avoid abnormal flow.

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7. The latest calibrated data which are produced by performing the analog input or output
calibration are store in the RAM memory temporally. Users need to perform the M26
function to make these data be solidified.
8. Use Menu 49 to check if there are inputs from the RS485 port with network application.
If not, please check protocol selection software switch located at Menu 63 and the serial
port parameters
options located at Menu62. Select option 1 at Menu 63 for the MOSBUS RTU application.
Select option 0 for MODBUS ASCII and FUJI extended and Simple Water Meter protocols.
2. Introduction to new generation LRF-2000M
2.1 Development introduction
The new generation LRF-2000M is developed with the experience of 12 years of manufacturing
and based on our version-7 and version-11 flow meters. By using the high performance
MSP430FG4618 microprocessor made by Taxes Instruments, it is intend to provide our
customers with lower cost but of high performance general purpose ultrasonic flow meter/heat
meter/ultrasonic flow converter.
The PCB board used in a LRF-2000M module is our 13th version of ultrasonic flow meters, so
that we usually call it version-13 flow meter. The PCB board measures 116x62 millimeter. It is
encased in a plastic rectangle case that could be plugged easily onto an installation rail. The
power supply is 8~36VDC@50Ma (10~36VAC is also applicable). It is equipped on board with
a 96-segments LCD display, an isolated 4~40mA current output, 3 ways of analog input, one
Serial Expanding Bus socket, 2 ways of OCT switch output, 2 ways of PT100 RTD inputs, one
isolated and surge protected RS485.
Compared with our early version-7 and version-11 flow meters, with the cost reduced
tremendously, major revisions as following have been made：
(1) 128 times of sample of original data (version-7 have only 50) made higher accuracy
(2) More communication protocols like MODBUS, Meter-BUS etc.
(3) Isolated DC/AC power supply makes meter could work properly on various demanding
industrial environments.
(4) The new generation of flow meter can measure heat/energy now, it is equipped with 2
two ways of PT100 RTD.
(5) Software updating can be done by the users now. If any software bug was found, we now
could send our users with an updating file via email.
The module can work alone without a LCD and Keypad module. The parameters that the flow
meter needed to work properly can be
(1) Setup by a parallel keypad module which will be plugged onto the parallel interface inside
of the module.
(2) By a serial keypad module which can be plugged onto RS485 serial port of the meter. The
serial keypad also serves to supply the 24VDC power for the flow meter.
(3) down-loading by use of a PC computer based software.

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The transducers can be one of any kinds of the types made by this company, include the
clamp-on type, the insertion type, the PI- type and standard-pipe type. It can even use
transducers made by the users or the transducers made by other company.
The module will satisfy the measurement requirement for most kind of liquids, such as water,
sea water, sew water and chemistry liquids. It can even measure pure paper pulp or fluids with
higher density suspend particles.
The module can be used alone as a flow meter. Users can even integrate a number of the
modules into a multi-channel flow meter that can measures up to several dozen of different
pipes or a flow meter that has higher accuracy by measures the same pipe with all the
channels.
The low flow performance of this module is better compared with our previous flow meters. It
can measure a flow that is as low as 0.001m/S properly when the PI-transducers are used.
2.2 Features
1. better than 1% accuracy, better than 0.2% repeatability.
2. 128 times of measurement and the revised software make the performance better and
the indicated flow more stable.
3. RS485 serial port
4. Three analog inputs.
5. One 4-20mA analog output.
6. Two OCT output channels
7. Ability to measure sewage water.
8. Four kinds of different types of transducers can be used, addition with user-defined
transducers.
9. The internal universal serial bus enables several output modules to be connected to it.
10. All the parameters can be solidify into the flash memory.
11. Several optional function module to be chosen to add to the main module.
12. More than 4 different kinds of communication protocol supported by the same time,
include MODBUS, Meter-BUS
13. Date totalizers that can record as much as 64 sets of data by day, 32 sets of data by
month. All the data can be retrieved by use of the MODBUS registers

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14. 32 records of power-on and power-off data. Data can be read through MODBUS.
15. Built-in data logger/printer, full programmable with what to be print, the start time,
interval, and output times.
16. Programmable pulse width of OCT output.
17 One Parallel Interface for display and keypad.
18 Plug-on-and-off display and keypad module can be connected to the serial port of the
meter.
19 Almost the same menu arrangement make the users of previous version of flow meter
very easy to operate.
20 A fluid velocity threshold enables the identification of the kinds of fluid.
21. Digital inputs can be inputted by used of the analog inputs.
22. A full programmable built-in batch controller which can be started by key-pressing, and
by the input to the analog inputs or through MODBUS protocol.
23. Power supply by 8VDC~36VDC/50mA or 10VAC~30VAC/50mA.
24. Daily time period flow totalizer. (refer to Menu #80)
2.3 Picture of the module and its terminal description

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Terminals（NOTE: The terminal pin-outs may vary with different module）
8~36V+, 8~36V－Power supply. 10~36VAC is also applicable to these two terminal.
485+, 485- RS485 terminals
AO+, AO- Analog output, loop powered
UP+, UP- Connect to the upstream transducer
DN+, DN- Connect to the downstream transducer
GND ‘Ground’ for the transducers. NOT for power and AO and RS485. Avoid of
making any connection from power to the GND terminal, or the isolation
will lost.
T1, T2 Connect to signal terminals of the PT100 RTD
. TX1, TX2 Connect to the power terminals of the PT100 RTD
The return terminals of the RTD connect to ‘GND’
AI3, AI4, AI5 Analog inputs, Ground connect to GND’
OCT+, OCT- OCT output terminals. OCT is related to Mneu78.
OCT2+, OCT2- OCT outputs, which is related to MENU79, the RELAY output setup’
3. On Board Segmental LCD display Details
Each LRF-2000M has an on board 96 segments LCD display, like in the figure. It is only for the
purpose of displaying. There 40 displays in total.
The only key is for the browsing of displays.
For numbers.
Signal strength
Signal Quality (the Q Value)
Flow is running.

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Repair needed
* Direction of the flow
* No flowing or flow not above threshold
* Battery is full
* For flow rate
* For energy flow rate
* For Total Energy
* The temperature difference
By the default setting (0 or 1 is input to [M3.]), when the only key is press shortly, the
on-board display will go to the next display, for example, from display 02 to display 03. If the
display reaches 40, it will go back to display 00.
When the key is pressed longer enough (3 seconds), the display will go directly to display 00,
no matter where it was before.
The on-board display can also be set to an automatically-scan-display mode. For example, if
number 10 is input to [M3.] window (parallel or serial keypad, or command to the serial port
needed), the on-board display will displays one after another from display
00>01>02….>09>00, automatically with an interval of eight seconds.
When the display is in the automatically-scan-display mode, if the display key is pressed, the
display will go to the ‘original’ display. By the next key press, display will go to the next display.
If a long key (more than 3 seconds) is pressed, display will go to display 00 directly.
3.1 On-Board display table
Number Patten Meaning Note
00 006789.45 m3Positive Total Flow Decimal point is determined by
M33，unit in m3
01 8.3215 m/s Flow rate Unit: m/s
02 007658.34 GJ Positive Total Heat Decimal point is determined by
M88, unit by M84
03 2.3214 KW Heat Flow rate Unit determined by M84
04 91.4 65.3 ℃Inlet and Outlet

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Temperature
05 34.2345
△℃
Temperature difference
06 000012.14 /h Failure Timer Unit : hours
07 F- 80 9 States Error Code, Signal Strength, and
Quality
08 23.15.49 Calendar, Time
09 07-12-31 Calendar, date
10 E0 0.1234 Flow velocity Unit: m/s
11 E1 99.876 Travel time rate ％, between the measured and
calculated travel time
12 E2 1480.3 The speed of the flow Unit: m/s
13 E3 4.0000 Current analog output Unit: mA
14 E4 130.24 Equivalent resistance of T1 Ω
15 E5 130.56 Equivalent resistance of T2 Ω
16 E6 15.00 Diameter of the pipe Millimeter
17 E7 12.34 Software version
18 12800001 Electronic Serial Number
19 E9 1 Address(ID) Use M46 for setup
20 002345.23 h Total working timer Unit: hours
21 071219.08 Date of manufacturing YYMMDD:HH
22 88888888 Display all segments
23 23 A5 F7 89 Inputs at the serial port For the purpose of checking
communication
24 L4 Pu-1 The used protocol Use M63 for select ting MODBUS
RTU/ASCII
25 L5 1.0000 Meter scale (meter factor)
26 23658933 m3 Total flow for the year
27 23658933 m3 Total flow the month
28 L8 56.546 Total travel time Unit: uS
29 L9 0.0045 Delta time Unit: nS
30 C0 4503 Delta Voltage 1 Normal between 3500~5000, for
diagnostics
31 C1 9034 Delta Voltage 2 Normal between 7000~9600, for
diagnostics