LRF-3000H - Wallox.se
LRF-3000H Handheld Ultrasonic Flowmeter
Ultrasonic Flowmeter Instruction Manual
Model: LRF-3000H
Update
Record
Version: 1.1
Revision
Date
1.1
Nov. 2010
Page 0 of 42
LRF-3000H Handheld Ultrasonic Flowmeter
Notice
Thank you for choosing the LRF-3000H Ultrasonic Flowmeter with SLSI CMOS and low-voltage wide-pulse
transmission technology.
This instruction manual contains important information. Please read carefully before operation of the flowmeter.
WARNINGS IN THIS MANUAL
Caution and warning statements are used throughout this book to draw your attention to important information.
WARNING
“Warning” statement appears with information that is important to protect people and
equipment from harm or damage. Pay very close attention to all warnings that apply to your
application. Failure to comply with these instructions may damage the meter.
ATTENTION
Failure to comply with these instructions may result in faulty operation.
NOTE
“Note” indicates that ignoring the relevant requirements or precautions may result in flowmeter
damage or malfunction.
Note: Some contents in this manual maybe different from the instrument you buy, which is because of the
different configuration requirement when purchasing. On the other hand due to the need of the product
improvement and upgrade, there is no remark on it, please be attention to the version number and the enclosed
explanation.
Version: 1.1
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LRF-3000H Handheld Ultrasonic Flowmeter
Product Components
An inspection should be made of the desired location before installing the flowmeter. Check to see if the spare
parts are present in accordance with the packing list. Make sure that there is no shipping damage. If you have any
questions, please contact your representative as soon as possible.
1. Transmitter
2. Transducer
3. Cables
4. Signal Cable
5. SD card
6. Charger
7. Coupling compound
8. Pipe straps
9. Carrying Case
Version: 1.1
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LRF-3000H Handheld Ultrasonic Flowmeter
Table of Contents
1.
ELECTRONICS INSTALLATION AND CONNECTION ..................................................................................................... 5
1.1.
POWER SUPPLY CONNECTIONS ................................................................................................................................. 5
1.1.1.
Type of Power Supply ..................................................................................................................................... 5
1.1.2.
Wiring ............................................................................................................................................................. 5
1.2.
POWERING ON ........................................................................................................................................................ 5
1.3.
KEYPAD FUNCTIONS ................................................................................................................................................ 6
1.4.
KEYPAD OPERATION ................................................................................................................................................ 6
1.5.
FLOWMETER MENU DESCRIPTIONS............................................................................................................................. 7
2.
PIPE PARAMETER ENTRY SHORTCUTS ...................................................................................................................... 8
3.
MEASUREMENT SITE SELECTION............................................................................................................................. 10
4.
TRANSDUCER INSTALLATION................................................................................................................................... 11
4.1.
INSTALLING THE TRANSDUCERS ............................................................................................................................... 11
4.1.1.
Transducer Mounting Methods ...................................................................................................................... 11
4.1.2.
V Method....................................................................................................................................................... 11
4.1.3.
Z Method ....................................................................................................................................................... 11
4.1.4.
N Method (not commonly used)..................................................................................................................... 12
4.2.
TRANSDUCERS FIXING............................................................................................................................................ 12
4.3.
TRANSDUCER MOUNTING INSPECTION ...................................................................................................................... 13
4.2.1.
Signal Strength ............................................................................................................................................. 13
4.2.2.
Signal Quality (Q value) ................................................................................................................................. 13
4.2.3.
Total Time and Delta Time ............................................................................................................................. 13
4.2.4.
Transit Time Ratio ......................................................................................................................................... 13
4.2.5.
Warnings....................................................................................................................................................... 14
5. OPERATING INSTRUCTIONS .......................................................................................................................................... 15
5.1.
SYSTEM NORMAL IDENTIFICATION ............................................................................................................................ 15
5.2.
LOW FLOW CUTOFF VALUE ..................................................................................................................................... 15
5.3.
ZERO SETTING ..................................................................................................................................................... 15
5.4.
SCALE FACTOR .................................................................................................................................................... 15
5.5.
4~20MA CURRENT LOOP OUTPUT ........................................................................................................................... 16
5.6.
4-20MA CURRENT LOOP VERIFICATION ..................................................................................................................... 16
5.7.
SD CARD OPERATION............................................................................................................................................ 16
5.7.1.
Specifications ............................................................................................................................................... 16
5.7.2.
Install or Remove the SD card while the meter is powered on ........................................................................ 17
5.7.3.
Reading the SD Data Externally ..................................................................................................................... 17
5.7.4.
SD Card Storage Operation ........................................................................................................................... 18
5.8.
6.
ESN ................................................................................................................................................................... 18
WINDOW DISPLAY EXPLANATIONS........................................................................................................................... 19
6.1.
WINDOW DISPLAY CODES ....................................................................................................................................... 19
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LRF-3000H Handheld Ultrasonic Flowmeter
6.2.
7.
DISPLAY EXPLANATION .......................................................................................................................................... 20
ERROR DIAGNOSIS ................................................................................................................................................... 34
7.1.
TABLE 1. SELF-DIAGNOSIS AND ERROR SOLUTIONS (UPON POWER ON) ........................................................................... 34
7.2.
TABLE 2. ERROR CODES AND SOLUTIONS (DURING OPERATION) .................................................................................... 35
7.3.
FREQUENTLY ASKED QUESTIONS AND ANSWERS ........................................................................................................ 36
8. PRODUCT OVERVIEW ........................................................................................................................................... 37
8.1
INTRODUCTION ..................................................................................................................................................... 37
8.2
FEATURES OF FLOWMETER ..................................................................................................................................... 37
8.3
THEORY OF OPERATION ......................................................................................................................................... 37
8.4.
APPLICATIONS ...................................................................................................................................................... 38
8.5.
SPECIFICATIONS ................................................................................................................................................... 39
9.
APPENDIX1 - FLOW APPLICATION DATA ................................................................................................................... 40
9.1
SOUND VELOCITY AND VISCOSITY FOR FLUIDS COMMONLY USED .................................................................... 40
9.2
SOUND VELOCITY FOR VARIOUS MATERIALS COMMONLY USE .......................................................................... 40
9.3
SOUND VELOCITY IN WATER (1 ATM) AT DIFFERENT TEMPERATURES ................................................................ 41
Update Information:
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
Version: 1.1
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LRF-3000H Handheld Ultrasonic Flowmeter
1. Electronics Installation and Connection
1.1. Power Supply Connections
1.1.1. Type of Power Supply
The factory offers one rechargeable 11.1V Lithium battery and matching battery charger.
1.1.2. Wiring
Open the hinged top cover of the electronics. Shown from left to right on the panel of the LRF-3000H are the
downstream transducer connector, upstream transducer connector, the battery recharge port (charge the transmitter
or connect to a standby power supply), and the 4~20mA output connector.
Do wn Strea m
U p Stream
Po wer Switch
4-20m A
Power Switch
SD Card
Battery Recharge Port
4 -20mA Output Connector
UPSTR EA M
DOWNST REAM
Downstream
Transducer
Ch arg e
Upstream
Transducer
WARNING
Wiring connections should be made when power is off.
1.2. Powering on
As soon as the flowmeter is switched on, the self-diagnosis program will start to run. If any error is detected, an
error code will displayed on the screen (see Error Diagnostics). After that, the system will run automatically using
the programmed parameters.
All the parameters input by the user will be saved permanently until they are changed by the user.
When the user modifies the parameters and removes the transducers, the meter will recalculate
automatically, and operate normally under the new parameters.
Version: 1.1
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LRF-3000H Handheld Ultrasonic Flowmeter
1.3. Keypad Functions
Follow these guidelines when using the flowmeter keypad:
0
~
and
9
to input numbers.
Backspace or delete characters to the left.
>
<
and - Return to the last menu or open the next menu. Acts as “+”
and “-” are used to enter numbers.
+
Select a menu. Press this key first, input a two-digit menu number
and the selected menu data will be displayed. For example, to input a pipe
outside diameter, press Menu 1 1 where “11” is the window ID to
Enter/Exit SD
display the pipe outside diameter. Enter Enter/Confirm
Menu
Data
Rate
Total
Velocity
Signal
Fluid
Diagnosis
card storage interface.
、
、
、
、
、
.Are shortcuts
to the windows for Flow Rate, POS Totalizer, Velocity, Fluid Type, Signal
Quality and Diagnosis.
1.4. Keypad Operation
The instrument setup and measurement displays are subdivided into more than 100 independent menus. The
operator can input parameters, modify settings or display measurement results by “visiting” a specific menu.
These menus are arranged by 2-digit serial numbers from 00~99, then using +0, +1, etc. Each menu ID code has a
defined meaning. For example, menu 11 is the pipe outside diameter, while menu 25 is the mounting spacing
between the transducers. Each menu is discussed later in this manual.
key at any time except the SD Card Storage Interface, then input the
To visit a specific menu, press the
2-digit menu ID code and that menu will be displayed. For example, to input or check the pipe outside diameter,
1 1 keys for window ID code 11.
press the
Menu
Menu
>
<
Another method to visit a particular menu is to press the +
and Enter keys to scroll through the menus.
For example, if the current menu is 30, press - key to enter menu 31, press the + button again to enter
menu 30.
<
>
The menus are divided into three types:
1) Data Type, such as M11, M12;
2) Selection Type, such as M14;
3) Display Type, such as M00, M01.
Visit Data Type menus to check specific parameters. If
parameter change is needed, just input the values then
press Enter ; or press Enter first, then input the values
and press Enter to confirm.
Example 1: To enter a pipe outer diameter of 200mm,
the procedure is as follows:
Menu 11
Pi pe Out er Di amet er
200 mm
14:53:30
Q=00
R
1 1 to enter Menu11 (the numerical
Press
value displayed currently is the previous pipe outer
diameter). Now press the Enter key. The symbol “>”
and a flashing cursor is displayed on the left side of
the third line on the screen. The new value can now be
entered. Or input the value first then press Enter to
confirm 2 0 0 Enter .
Menu
Version: 1.1
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LRF-3000H Handheld Ultrasonic Flowmeter
Visit Selection Type menus to check the related
options. If need to modify it, press Enter first to enter
the revised selection when the symbol “>” and a
flashing cursor are displayed at the left end of the
third line on the screen; or input numbers directly to
select the option when the symbol “>” and a flashing
cursor are displayed.
Example 2: If the pipe material is “Stainless Steel”,
1 4 to enter Menu 14, then press Enter
press
to modify the option. Then, select “1. Stainless Steel”
from the drop-down menu (you may cycle through the
choices by pressing the / + and / - keys) and then
press ENT to confirm the selection. It is also possible
to press the 1 key to change the selection and wait
until “1. Stainless Steel” is displayed on the second
line of the screen. Then press the ENT key to confirm.
Menu
Menu 14
Pi pe I nner Di amet er
0.
Car bon St eel
14:54:45
Q=97 R
1.5. Flowmeter Menu Descriptions
00~09
Display menus: Used to display flow rate, positive total, negative total, net total, velocity, date
& time etc.
10~29
Setup menus: Used to enter pipe outer diameter, pipe wall thickness, fluid type, transducer
type, transducer mounting and spacing, etc.
30~38
Flow units selection and totalizer operating menus: Used to select units of measurement. Other menus
set/reset the various totalizer modes.
40~45
Zero Set Calibration, Scale Factor.
55~83
Input and output setup menus: current loop mode select, 4mA or 0mA output value, etc.
90~94
Diagnostics: signal strength quality (menu 90), TOM/TOS*100 (menu 91), sound velocity
(menu 92), total time and delta time of the measured signal (menu 93), Reynolds number and K
factor (menu 94).
+0~+4
Appendix: Power on/off time, total working hours, on/off times etc.
-0
4~20mA correction menu.
ATTENTION
“Hidden” menus are for hardware adjustment (set by the manufacturer).
Version: 1.1
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LRF-3000H Handheld Ultrasonic Flowmeter
2. Pipe Parameter Entry Shortcuts
Example: Let us assume you have a DN200 (8”) pipe, measuring water, Material is carbon steel with no liner.
These parameters should be entered as follows:
Step 1. Pipe outside diameter
1 1 keys to enter menu 11,
Press
enter the pipe outside diameter, then press the
ENT
key.
Menu
Step 2. Pipe wall thickness
1 2 key to enter menu 12,
Press the
enter the pipe wall thickness (wall thickness
for various pipe schedules can be found in the
appendix), then press the ENT key.
Menu 11
Pi pe Out er Di amet er
200 mm
14:53:30
Q=00
R
Menu 12
Pi pe Wal l Thi ckness
6 mm
14:54:00
Q=00
R
Menu
Step 3. Pipe material
1 4 key to enter menu 14,
Press the
ENT
key, use the + or - key
press the
to select the pipe material from the drop-down
menu, then press the ENT key.
Menu
>
<
Step 4. Liner material parameters
(including thickness and sound velocity, if
needed)
1 6 key to enter menu 16,
Press the
ENT
key, use the + or - key
press the
to select liner material from the drop-down
menu, and then press the ENT key.
Menu
>
<
Version: 1.1
Menu 14
Pi pe Mat er i al
0.
Car bon St eel
14:54:45
Q=97 R
Menu 16
Li ner Mat er i al
0.
None, No Li ner
14:55:10
Q=97 R
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LRF-3000H Handheld Ultrasonic Flowmeter
Step 5. Fluid type
2 0 key to enter menu 20,
Press the
ENT
key, use the + or - key
press the
to select fluid type from the drop-down menu,
then press the ENT key.
Menu
>
<
Step 6. Transducer mounting methods
2 4 key to enter menu 24,
Press the
ENT
key, use the + or - key to
press the
select
transducer-mounting
from
the
drop-down menu, then press the ENT key.
(Details on Charpter 4.1)
Menu
Menu 20
Fl ui d Type
0.
Wat er
14:55:58
Q=97
R
>
<
Menu 24
Tr ansducer Mount i ng
0.
V
14:56:20
Q=97 R
Step 7. Transducer spacing
>
Press the - 2 5 key to enter menu 25,
accurately install the transducer according to
the displayed transducer mounting spacing and
the selected mounting method.
(Details on Chapter 4).
Menu 25
Tr ansducer Spaci ng
159.86mm
14:56:40
Q=97
R
Step 8. Display Mesurement Results
0 1 to enter Menu 01 to display
Press
flow rate. (Subject to the real measurement.)
Menu
Version: 1.1
Menu 01
Fl ow 30280m3/ h * R
Vel
0. 3863 m/ s
14:43:02
Q=97 R
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LRF-3000H Handheld Ultrasonic Flowmeter
3. Measurement Site Selection
When selecting a measurement site, it is important to select an area where the fluid flow profile is fully developed
to guarantee a highly accurate measurement. Use the following guidelines to select a proper installation site:
Choose a section of pipe that is always full of liquid, such as a vertical pipe with flow in the upward direction or a
full horizontal pipe.
Ensure enough straight pipe length at least equal to the figure shown below for the upstream and downstream
transducers installation.
Name
Straight length of upstream
piping
Straight length of
downstream piping
L ≥5D
90o bend
10D min
L ≥10D
10D min
Detector
L ≥10D
L ≥50D
Tee
0.5D min
10D min
L≥5D
L ≥30D
D
Diffuser
5D min
L≥10D
L ≥5D
Reduce
L≥10D
L≥30D
Valve
Flow controlled upstream
Flow controlled downstream
Check valve
Pump
Stop valve
L≥50D
P
Ensure that the pipe surface temperature at the measuring point is within the transducer temperature limits.
Consider the inside condition of the pipe carefully. If possible, select a section of pipe where the inside is free of
excessive corrosion or scaling.
Version: 1.1
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LRF-3000H Handheld Ultrasonic Flowmeter
4. Transducer Installation
4.1. Installing the Transducers
Before installing the transducers, clean the pipe surface where the transducers are to be mounted. Remove any rust,
scale or loose paint and make a smooth surface. Apply a wide band of sonic coupling compound down the center
of the face of each transducer as well as on the pipe surface, and then attach the transducers to the pipe with the
straps provided and tighten them securely.
Note:
1. The two transducers should be mounted at the pipe’s centerline on horizontal pipes. Make sure that the
transducer mounting direction is parallel with the flow.
2. During the installation, there should be no air bubbles or particles between the transducer and the pipe wall. On
horizontal pipes, the transducers should be mounted in the 3 o’clock and 9 o’clock positions of the pipe section in
order to avoid any air bubbles inside the top portion of the pipe.
3. Refer to Transducer Mounting on Menu 25.
4. If the transducers cannot be mounted horizontally symmetrically due to limitation of the local installation
conditions, it may be necessary to mount the transducers at a location where there is a guaranteed full pipe
condition (the pipe is always full of liquid).
4.1.1. Transducer Mounting Methods
Four transducer mounting methods are available. They are respectively: V method, Z method and N method . The
V method is primarily used on small diameter pipes (DN100~300mm, 4”~12”). The Z method is used in
applications where the V method cannot work due to poor signal or no signal detected. In addition, the Z method
generally works better on larger diameter pipes (over DN300mm, 12”) or cast iron pipes.
The N method is an uncommonly used method. It is used on smaller diameter pipes (below DN50mm, 2”).
4.1.2. V Method
The V method is considered as the standard method. It usually gives a more accurate reading and is used on pipe
diameters ranging from 50mm to 400mm (2”~16”) approximately. Also, it is convenient to use, but still requires
proper installation of the transducer, contact on the pipe at the pipe’s centerline and equal spacing on either side of
the centerline.
Side View
Upstream Transducer
Section
Top View
Transducer
Flow
Flow
Downstream Transducer
Pipe Strap
Transducer Space
4.1.3. Z Method
The signal transmitted in a Z method installation has less attenuation than a signal transmitted with the V method.
This is because the Z method utilizes a directly transmitted (rather than reflected) signal which transverses the
liquid only once.
Version: 1.1
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LRF-3000H Handheld Ultrasonic Flowmeter
The Z method is able to measure on pipe diameters ranging from 25mm to 1200mm (1”~48”) approximately.
Side View
Upstream Transducer
Section
Top View
Transducer
Flow
Flow
Downstream Transducer
Transducer Spacing
Pipe Strap
4.1.4. N Method (not commonly used)
With the N method, the sound waves traverse the fluid twice and bounce three times off the pipe walls. It is
suitable for small pipe diameter measurement.
The measurement accuracy can be improved by extending the transit distance with the N method (uncommonly
used).
Side View
Upstream Transducer
Section
Top View
Transducer
Flow
Flow
Downstream Transducer
Pipe Strap
Transducer Spacing
4.2. Transducers fixing
Transducers can stick onto the pipe with its magnetic steel racks. If need to fasten them, then can use the chains to
make it firm. See below picture.
Version: 1.1
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LRF-3000H Handheld Ultrasonic Flowmeter
4.3. Transducer Mounting Inspection
Check to see if the transducer is installed properly and if there is an accurate and strong enough ultrasonic signal
to ensure proper operation and high reliability of the transducer. It can be confirmed by checking the detected
signal strength, total transit time, delta time as well as transit time ratio. These checks are explained below.
The “mounting” condition directly influences the flow value accuracy and system reliability. In most instances,
apply a wide bead of sonic coupling compound lengthwise on the face of the transducer and stick it to the outside
pipe wall to get good measurement results. However, the following inspections still need to be carried out in order
to ensure a high reliability of the measurement and long-term operation of the instrument.
4.2.1. Signal Strength
Signal strength (displayed in menu 90) indicates a detected strength of the signal both from upstream and
downstream directions. The relevant signal strength is indicated by numbers from 00.0~99.9. 00.0 represents no
signal detected while 99.9 represent maximum signal strength.
Normally, the stronger the signal strength detected, the better the measurement.
Adjust the transducer spacing to the best position and check to ensure that enough sonic coupling compound is
applied during installation in order to obtain the maximum signal strength. This is essentially fine tuning the
calculated spacing shown in menu 25 (transducer spacing). It may be slightly different.
System normal opperation requires signal strength over 60.0, which is detected from both upstream and
downstream directions. If the signal strength detected is too low, the transducer installation position and the
transducer mounting spacing should be re-adjusted and the pipe should be re-inspected. If necessary, change the
mounting to the Z method (Z has the highest signal strength).
4.2.2. Signal Quality (Q value)
Q value is short for Signal Quality (displayed in menu 90). It indicates the level of the signal detected. Q value is
indicated by numbers from 00~99. 00 represents the minimum signal detected while 99 represent the maximum.
The transducer position may be adjusted and enough coupling used to get the signal quality detected as strong as
possible.
4.2.3. Total Time and Delta Time
“Total Time and Delta Time” are displayed in menu 93. The measurement calculations in the flowmeter are based
upon these two parameters. Therefore, when “Delta Time” fluctuates widely, the flow and velocities fluctuate
accordingly. This means that the signal quality detected is poor. It may be the result of poor pipe-installation
conditions, inadequate transducer installation or incorrect parameter input.
Generally, “Delta Time” fluctuation should be less than±20%. Only when the pipe diameter is too small or
velocity is too low can the fluctuation be wider.
4.2.4. Transit Time Ratio
Transit Time Ratio indicates if the transducer mounting spacing is accurate. The normal transit time ratio should
be 100±3 if the installation is proper. Check it menu 91.
ATTENTION
If the transit time ratio is over 100±3, it is necessary to check:
(1)
(2)
(3)
(4)
Version: 1.1
If the parameters (pipe outside diameter, wall thickness, pipe material, liner, etc.) have
been entered correctly,
If the transducer mounting spacing is accordance with the display in menu 25,
If the transducer is mounted at the pipe’s centerline on the same diameter,
If the scale is too thick or the pipe mounting is distorted in shape, etc.
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LRF-3000H Handheld Ultrasonic Flowmeter
4.2.5. Warnings
1.
Pipe parameters entered must be accurate; otherwise the flowmeter will not work properly.
2.
During the installation, apply enough coupling compound to bond the transducer onto the pipe wall.
While checking the signal strength and Q value, move the transducer slowly around the mounting site
until the strongest signal and maximum Q value are obtained. The larger the pipe diameter, the more the
transducer may have to be moved.
3.
Check to be sure the mounting spacing is as calculated in menu 25 and the transducer is mounted at the
pipe’s centerline on the same diameter. Note that you can adjust the spacing slightly as described above
to fine tune the device.
4.
Pay special attention to those pipes that formed by steel rolls (pipe with seams), since such pipe is
always irregular. If the signal strength is always displayed as 0.00, that means there is no signal detected.
Thus, it is necessary to check that the parameters (including all the pipe parameters) have been entered
accurately. Check to be sure the transducer mounting method has been selected properly, the pipe is not
worn-out, and the liner is not too thick. Make sure there is there is indeed fluid in the pipe or the
transducer is not very close to a valve or elbow, and/or there are not too many air bubbles in the fluid,
etc. Once you have ruled out all these possible reasons, if there is still no signal detected, the
measurement site has to be changed.
Version: 1.1
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LRF-3000H Handheld Ultrasonic Flowmeter
5. Operating Instructions
5.1. System Normal Identification
Press the Menu 0 8 keys. If the letter “*R” displays on the screen, it indicates system normal.
If the letter “E” is displayed, it indicates that the current loop output is over ranged by 120%. This refers to the
settings in menu 57. Enter a larger value in menu 57, and the letter “E” will disappear. It can be ignored if no
current loop output is used.
If the letter “H” is displayed, it indicates that the ultrasonic signal detected is poor. For more information, please
refer to “Error Diagnosis”.
If the letter “G” is displayed, it indicates that system is adjusting the signal gain prior to the measurement. Also, it
means system normal. Only when the adjustment takes too long without stopping, can system be identified as
abnormal.
Letter “I” indicates no signal is being detected. Check to see if the transducer wiring connections are correct, the
transducers are securely installed, etc.
Letter “J” indicates a hardware defect exists. Normally, such a defect is temporary; it could be eliminated by
system reboot (power off and restart).
For further information, please refer to “Error Diagnosis”.
5.2. Low Flow Cutoff Value
The data in M41is Low Flow Cutoff Value. If the flow rate falls below the low flow cutoff value, the flow
indification is driven to zero. This function can prevent the flow meter from reading flow after a pump as shut
down but there is still liquid movement in the pipe, which will result in totalization error. Generally, 0.01m/s is
recommended to enter as the low flow cutoff point. The low flow cutoff value has no relation to the measurement
results once the velocity increase over the low flow cutoff value.
5.3. Zero Setting
Once zero flow occurs, a zero point is established, i.e. as the measurement value reaches zero flow, it indicates as
zero. It is necessary to establish the true zero flow condition and program that set point into the instrument.
If the zero set point is not at true zero flow, an offset will occur. For an ultrasonic Flowmeter, the measurement
difference from zero point cannot be ignored under low flow conditions. It is necessary to perform a zero set
calibration to improve low flow measurement accuracy.
Set Zero in Menu42, press Enter ,wait for the processing indication at the bottom right corner of the screen to reach
“0”. Performing Set Zero with under flowing conditions may cause the flow to be displayed as “0”. If so, it can
be recovered via Menu 43.
5.4. Scale Factor
Scale factor refers to the ratio between “actual value” and “reading value”. For example, when the measurement is
2.00, and it is indicated as 1.98 on the instrument, the scale factor reading is 2/1.98. This means that the best scale
factor constant is 1.
However, it is difficult to keep the scale factor as “1” on the instrument especially in batch control operations. The
difference is called “consistency”.
The scale factor default is “1” for each instrument prior to shipment from the factory. The reason is that the scale
factors in the flowmeter are only limited by two parameters, i.e. the crystal oscillation frequency and the
transducer. It has no relation to any circuit parameters.
During operation, if there still exists possible difference in pipe parameters, etc., the “scale factor” may be
necessary to be changed when used on different pipes. Thus, scale factor calibration is specially designed for
calibrating the differences that result from application on different pipes. The scale factor entered must be one that
results from actual flow calibration. The scale factor can be entered via M45.
Version: 1.1
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LRF-3000H Handheld Ultrasonic Flowmeter
5.5. 4~20mA Current Loop Output
With a current loop output exceeding an accuracy of 0.1%, the flowmeter is programmable and configurable with
outputs such as 4 ~20mA or 0~20mA selected in menu M55. For details, please refer to “Window Display
Explanations”.
In Window M56, enter a 4mA flow value. Enter the 20mA flow value in Window M57. For example, if the flow
range in a specific pipe is 0~1000m3/h, enter 0 in Window M56 and 1000 in Window M57. If the flow ranges
from -1000~0~2000m3/h, configure the 20~4~20mA output by selecting Window M55 when flow direction is not
an issue. Enter 1000 in Window M56 and 2000 in Window M57. When flow direction is an issue, an output of
0~4~20mA is available. When the flow direction displays as a negative value, the current output is in the range of
0~4mA, whereas the 4~20mA is for the positive direction. The output options are displayed in Window M55.
Enter “-1000” in Window M56 and 2000 in Window M57.
Calibrating and testing the current loop is performed in Window M58. Complete the steps as follows:
>
<
to display “0mA”, “4mA”, “8mA”, “16mA”, “20mA” readings,
Press Menu 5 8 Enter ,move + or
connect an ammeter to test the current loop output and calculate the difference. Calibrate it if the difference is not
within tolerance. Refer to Section 5.6 for Current Loop Verification.
Check the present current loop output in Window M59 as it changes with change in flow.
5.6. 4-20mA Current Loop Verification
NOTE
Do not perform this operation unless the actual output current value is different from the value
indicated inMenu 58 CL Check Verification. Every meter has been calibrated before leaving the
factory.
Calibrate the anolog input required to expand the hardware debugging menu as below procedures:
>
Press Menu powering off.
0
Enter
, enter the password “4213068” then press
Enter
. This action will be inoperative after
Press
Enter
>
<
Then press Enter to enter the Current Loop Verification Mode, press Enter to enter the 4mA verification status, use
an accurate ammeter to measure the output current of the current loop, and move + or - to adjust the
displayed values, wait for the ammeter current value to reach “4mA”, then the 4mA verification is finished.
to do the 20mA verification using the same procedure as for the 4mA verification.
The verification results will be automatically saved in the EPROM and will not be affected when the instrument is
powered off.
5.7. SD Card Operation
5.7.1. Specifications
Memory: 2 GB (Standard)
Note: The SD card is a consumable item and updates quickly. Thus the configuration is base on the real time
data received.
Data collection update rate: user selectable: 5 seconds to 60 seconds. If the rate is set longer than 60 seconds the
default will be 60 seconds; when is set to be less than 5 seconds, it will default to 5 seconds.
Data content: date and time, flow, velocity, totalized flow, positive totalizer and negative totalizer.
Data collection time: user selctable from 1~2880 mins (48 hours). If it is set is longer than 2880mins, it will
default to 2880mins.
Data storage format:
Version: 1.1
1=07-04-10, 14:16:33
Page 16 of 42
LRF-3000H Handheld Ultrasonic Flowmeter
2=+3.845778E+01m3/h
3=+1.451074E+00m/s
4=-0000010E+0m3
5=+0000002E+0m3
6=-0000012E+0m3
File system format: FAT16
File type: plain text file (.txt)
File capacity: maximum 512pcs
Filename format: yymmdd
(yy - year, mm - month, dd - date)
Turn to Charpter 5.7.4 for details if want to change a filename.
It can save 120bytes of data each time. When the capacity of the SD card is full, the new data will override the
earliest files automatically (it will rollover).
5.7.2. Install or Remove the SD card while the meter is powered on
If the operator desires to insert or remove the SD card with power on, the following operation is to be used:
1. Insert or remove the SD card without data storage.
2. To save data, press
button for 4 seconds, exit the acquisition, and then insert or remove the SD card.
Data
ATTENTION
Do not remove the SD card from the reader while actively collecting data. Processing the data
directly from the SD card file location on the PC could result in lost or corrupt data if the SD
card is removed while data is still being processed.
5.7.3. Reading the SD Data Externally
Remove the SD card from the Flowmeter. The operator may then use a PC card reader to read the data on the card.
Use “Converter.exe” software to convert the format when needed.
File Converter Tool (Click “offline” buttom to enter the document conversion interface)
Press “Converter” button and then convert the SD card data format from “.TXT “to “.XLS”, see below:
Select the file to be converted in “Source File (*.txt), enter the directory path and the filename in “Destination File
(*.xls), then press “Convert”. When “OK” is displayed means the conversion is completed.
Version: 1.1
Page 17 of 42
LRF-3000H Handheld Ultrasonic Flowmeter
5.7.4. SD Card Storage Operation
1. Insert the SD card,then press
Data
buttom to enter the SD card storage setting interface.
Fi l e name :100308
Col l ect i on T:0120( m)
I nt er val T:005( s)
Pr ess[ ENT] t o st ar t
>
<
2. If you need to modify the filename, acquisition time or acquisition interval, enter the number to modify it
directly, press + or - button for line feed.
Fi l e name :100308
+3. 600000E+03m/ h
+3. 152638E+003m/ h
0000:08
Q=97
R
3. After modification or to use the default value, press Enter to store the data. The above picture shows the
normal operation interface. (If it does not work normally, will be shown as the picture below.)
Fi l e name :100308
Pl ease i nser t car d or
Pr ess[ i ] Exi t
0000:08
Q=97 R
4. If yyou do not want to save the data, press
Data
for 4 seconds, then exit SD card storage, open Menu 01.
5.8. ESN
We provide the flowmeter with a unique electronic serial number to identify each flowmeter for the convenience
of the manufacturer and customers. The ESN, instrument types and versions are able to view in Window M61.
ATTENTION
Other Operating Refer to “6.2 Window Display Explanations”.
Version: 1.1
Page 18 of 42
LRF-3000H Handheld Ultrasonic Flowmeter
6. Window Display Explanations
6.1. Window Display Codes
Flow Totalizer Display
00
Flow Rate/Net Totalizer
01
Flow Rate/Velocity
02
Flow Rate/POS Totalizer
03
Flow Rate/NEG Totalizer
04
Date Time/Flow Rate
08
System Error Codes
09
Net Flow Today
Initial Parameter setup
10
Pipe Outer Perimeter
11
Pipe Outer Diameter
12
Pipe Wall Thickness
13
Pipe Inner Diameter
14
Pipe Material
15
Pipe Sound Velocity
16
Liner Material
17
Liner Sound Velocity
18
Liner Thickness
19
Inner Wall Roughness
20
Fluid Type
21
Fluid Sound Velocity
22
Fluid Viscosity
24
Transducer Mounting
25
Transducer Spacing
26
Parameter Setups
27
Cross-sectional Area
28
Holding with Poor Sig
29
Empty Pipe Setup
Flow Units Options
30
Measurement Units
31
Flow Rate Units
32
Totalizer Units
33
Totalizer Multiplier
34
Net Totalizer
35
POS Totalizer
36
NEG Totalizer
37
Totalizer Reset
38
Manual Totalizer
Setup Options
40
Damping
41
Low Flow Cutoff Value
42
Set Zero
43
Reset Zero
44
Manual Zero Point
45
Scale Factor
Input and output setup
55
CL Mode Select
56
CL 4mA Output Value
57
CL 20mA Output Value
58
CL Check
59
CL Current Output
60
Date and Time
61
ESN
70
Backlit Options
72
Working Timer
82
Date Totalizer
83
Automatic Correction
Diagnoses
90
Signal Strength and Quality
91
TOM/TOS*100
92
Fluid Sound Velocity
93
Total Time and Delta
94
Reynolds Number and Factor
Appendix
+0
Power ON/OFF time
+1
Total Working Hours
+2
Last Power Off Time
+3
Last Flow Rate
+4
ON/OFF Times
-0
Hardware Parameter Modification
NOTE:The factory maintains the final explanation for other menu features.
Version: 1.1
Page 19 of 42
LRF-3000H Handheld Ultrasonic Flowmeter
6.2. Display Explanation
Menu
0
0
Flow Rate/Net Totalizer
Display flow rate and net Totalizer.
If the net Totalizer has been turned off (refer to M34),
the net Totalizer value displayed is the total that
existed prior to turning it off.
Menu
0
1
Flow Rate/Velocity
Display flow rate and velocity.
Menu
0
0
0
Menu 02
Fl ow 30280m3/ h
*R
POS
+22435575x1m3
14:47:42
Q=97 R
3
Flow Rate/Negative Totalizer
Display flow rate and negative Totalizer.
Select the negative Totalizer value in Window M32.
If the negative Totalizer has been turned off (refer to
M36), the value displayed is total the total that existed
prior to turning it off.
Menu
Menu 01
Fl ow 30280m3/ h * R
Vel
0. 3863 m/ s
14:43:02
Q=97 R
2
Flow Rate/Positive Totalizer
Display flow rate and positive Totalizer.
Select the positive Totalizer units in Window M31.
If the positive Totalizer has been turned off, the
positive Totalizer value displayed is the total the total
that existed prior to turning it off.
Menu
Menu 00
Fl ow
30280m3/ m * R
NET
+22435575x1m3
14:42:42
Q=97 R
Menu 03
Fl ow 30280m3/ m * R
NEG
- 62x1m3
14:48:00
Q=97 R
4
Date Time/Flow Rate
Display the current date time and flow rate.
The time setting method is found in window M60.
Version: 1.1
Menu 04
10- 03- 08 14:48:59 * R
Fl ow 30280m3/ h
14:48:59
Q=97 R
Page 20 of 42
LRF-3000H Handheld Ultrasonic Flowmeter
Menu
0
8
System Error Codes
Display the operating condition and the system error
codes. More than one error code can occur at the same
time.
The explanations of error codes and detailed
resolution methods can be found in “Error Diagnosis”.
Menu
0
9
Net Flow Today
Display net total flow today.
Menu
1
1
Note: Enter either the pipe outside diameter or pipe
outer perimeter.
1
1
Menu 11
Pi pe Out er Di amet er
3. 14159 mm
14:53:30
Q=00 R
2
Pipe Wall Thickness
Enter the pipe wall thickness. If the pipe inside
diameter is already known, skip this window and enter
it in window M13.
Menu
Menu 10
Pi pe Out er Per i met er
3. 14159 mm
14:53:18
Q=97 R
1
Pipe Outside Diameter
Enter the pipe outside diameter; the pipe outside
diameter must range from 10mm to 600mm.
Menu
Menu 09
Net Fl ow Today M09
8. 785678E06 m3
14:52:29
Q=97 R
0
Pipe Outer Perimeter
Enter the pipe outer perimeter (circumference). If the
diameter is known know, enter it in window M11.
Menu
Menu 08
* Q- - - - - - - - - - - - - - Q
No Si gnal Det ect ed
14:51:24 Q=00
Q
Menu 12
Pi pe Wal l Thi ckness
6 mm
14:54:00
Q=00
R
3
Version: 1.1
Page 21 of 42
LRF-3000H Handheld Ultrasonic Flowmeter
>
Pipe Inner Diameter
Enter the pipe inside diameter. If the pipe outside
diameter and pipe wall thickness has been entered,
press - to skip this window.
Note: Enter either pipe wall thickness or pipe inside
diameter.
Menu
1
4
1
>
<
Pipe Material
Enter pipe material. The following options are
available (by + 、 - buttons or numerical keys):
0. Carbon Steel
1. Stainless Steel
2. Cast Iron
3. Ductile Iron
4. Copper
5. PVC
6. Aluminum
7. Asbestos
8. Fiber Glass-Epoxy
9. Other
Refer to item 9 “Other”; it is possible to enter other
materials, which are not included in previous eight
items. Once item 9 is selected, the relevant pipe sound
velocity must be entered in Window M15. If sound
velocity is not known, there are other ways to
determine it onsite.
Menu
1
Menu 14
Pi pe Mat er i al
0.
Car bon St eel
14:54:45
Q=97 R
5
Pipe Sound Velocity
Enter pipe sound velocity. This function is only used
when item 9 “Other” is selected in Window M14. At
the same time, this window cannot be visited. It will
be calculated automatically according to the existing
parameters.
Menu
Menu 13
Pi pe I nner Di amet er
588 mm
14:54:30
Q=97 R
Menu 15
Pi pe Sound Vel oci t y
0 m/ s
14:55:00
Q=97
R
6
Select the Liner Material
The following options are available:
0. None, No Liner
1. Tar Epoxy
2. Rubber
3. Mortar
4. Polypropylene
5. Polystryol
6. Ploystyrene
7. Polyester
8. Polyethylene
9. Ebonite
10. Teflon
11. Other
Item 11 “Other” is available to enter other materials
that are not included in previous ten items. Once the
Version: 1.1
Menu 16
Li ner Mat er i al
0.
None, No Li ner
14:55:10
Q=97 R
“Other” is selected, the relevant liner sound velocity
must be entered in Window M17.
Page 22 of 42
LRF-3000H Handheld Ultrasonic Flowmeter
Menu
1
7
Liner Sound Velocity
Enter liner sound velocity. It only can be visited when
item “ Other” in Window M16 is selected.
Menu
1
8
Liner Thickness
Enter liner thickness. It only can be visited when a
definite liner is selected in Window M16.
Menu
1
2
Menu 18
Li ner Thi ckness
2
14:55:28
Q=97
R
9
Inner Pipe Wall Roughess
Enter liner thickness. It only can be visited when a
definite liner is selected in Window M16.
Menu
Menu 17
Li ner Sound Vel oci t y
1328m/ s
14:55:15
Q=97 R
Menu 19
I nsi de ABS Roughness
2
14:55:46
Q=97 R
0
Select Fluid Type
The following options are available:
0. Water
1. Sea Water
2. Kerosene
3. Gasoline
4. Fuel Oil
5. Crude Oil
6. Propane
7. Butane (0◦C)
8. Other
9. Diesel Oil
10. Castor Oil
11. Peanut Oil
12. Gasoline #90
13. Gasoline #93
14. Alcohol
15. Water (125◦C)
Menu 20
Fl ui d Type
0.
Wat er
14:55:58
Q=97
R
1
Fluid Sound Velocity
Enter the fluid sound velocity. It only can be used
Version: 1.1
Page 23 of 42
Menu
2
LRF-3000H Handheld Ultrasonic Flowmeter
when item “Other” is selected in window M20, i.e. it
is unnecessary to enter all the fluids listed in Window
M20.
Menu
2
2
Fluid Viscosity
Enter fluid’s kinematics viscosity. It only can be used
when item “Other” is selected in Window M20, i.e. it
is unnecessary to enter all the fluids that listed in
Window M20.
Menu
2
Four mounting methods are available:
0. V (sound wave bounces 2 times)
1. Z (sound wave bounces once. The most commonly
use method)
2. N (small pipe, sound wave bounces 3 times.)
2
2
2
Menu 24
Tr ansducer Mount i ng
0.
V
14:56:20
Q=97 R
Menu 25
Tr ansducer Spaci ng
514. 603mm
14:56:40
Q=97
R
6
Initial Parameter Setups and Save
Load and save the parameters. 18 different sets of
setup conditions/groups are available to load and save
by three methods (i.e.-you can load and save 18
different applications):
0. Entry to Save
1. Entry to Load
2. To Browse
Select “Entry to Save”, press Enter . An ID code and
the original parameters are displayed in the window.
Press UP or DOWN ARROW to move the ID code,
then press the Enter key again to save the current
parameter in the current ID file.
When selecting “Entry to Load”, press ENT, and the
system will read and calculate the parameters
automatically and display the transducer mounting
spacing in Window M25.
Menu
R
5
Transducer Spacing
(This value is Calculated by the Flowmeter)
The operator must mount the transducer according to
the transducer spacing displayed (be sure that the
transducer spacing is measured precisely during
installation). The system will display the data
automatically after the pipe parameter has been
entered.
Menu
Menu 22
Fl ui d Vi scosi t y
1. 0038 cST
14:56:09
Q=97
4
Transducer Mounting
Menu
Menu 21
Fl ui d Sound Vel oci t y
1428. 9m/ s
14:56:00
Q=97 R
7
Version: 1.1
Menu 26
Par amet er s Set ups
Ent r y t o SAVE
14:57:00
Q=97 R
Cross-Sectional Area
Page 24 of 42
LRF-3000H Handheld Ultrasonic Flowmeter
Display the cross-sectional area inside the pipe.
Menu 27
Cr oss- sect i onal Ar ea
271547 mm2
14:57:20
Q=97 R
Menu
2
8
Holding With Poor Sig
Select “Yes” to hold last good flow signal displayed if
the flowmeter experiences a poor temporary signal
condition. This function will allow continued data
calculation without interruption.
Menu
2
9
Empty Pipe Setup
This parameter is used to overcome the possible
problems that usually show up when the pipe being
measured is empty. Since signals can be transmitted
through the pipe wall, the flow meter may still read a
flow while measuring an empty pipe. To prevent this
from happening, you can specify a value. When the
signal quality falls below this value, the measurement
stops automatically. If the flow meter is already able
to stop measuring when the pipe is empty, a value in
the range of 30 to 40 should also be entered in this
window to ensure no measurement when the pipe is
empty.
It should be understood that the instrument is NOT
designed to function correctly on an empty pipe.
Menu
3
3
14:58:10
36
Q=97
R
Menu 30
Measur ement Uni t s I n
0. Met r i c
14:58:23
Q=97 R
1
Flow Rate Units Options
The following flow rate units are available:
0.
1.
2.
3.
4.
5.
6.
7.
8.
Menu 29
Empt y Pi pe Set up
0
Measurement Units
Select the measurement unit as follows:
0. Metric
1. English
Factory default is metric.
Menu
Menu 28
Hol di ng wi t h Poor Si g
YES
14:57:40
Q=97 R
Cubic Meters
Liters
USA Gallons
Imperial Gallons
Million Gallons
Cubic Feet
USA Barrels
Imperial Barrels
Oil Barrels
(m3)
(L)
(GAL)
(Imp gal)
(mg)
(cf)
(US bbl)
(Imp bbl)
(Oil bbl)
Menu 31
Fl ow Rat e Uni t s
m3/ m
14:59:10
Q=97
R
The following time units are available:
/Day /Hour /Min /Sec
Factory default is Cubic Meters/hour.
Version: 1.1
Page 25 of 42
LRF-3000H Handheld Ultrasonic Flowmeter
Menu
3
2
Totalizer Units Options
Select Totalizer units. The available unit options are as
same as those found in Window M31. The user can
select units as their required. Factory default is Cubic
Meters.
Menu
3
3
Totalizer Multiplier Options
The Totalizer multiplier acts as the function to
increase the totalizer indicating range. Meanwhile, the
Totalizer multiplier can be applied to the positive
Totalizer, negative Totalizer and net Totalizer at the
same time. The following options are available:
0. x 0.001 (1E-3)
1. x 0.01
2. x 0.1
3. x 1
4. x 10
5. x 100
6. x 1000
7. x 10000(1E+4)
Factory default factor is x1
Menu
3
3
3
R
Menu 34
NET Tot al i zer
ON
15:00:50
Q=97
R
5
ON/OFF POS Totalizer
On/off positive totalizer. “ON” indicates the
flowmeter starts to totalize. When it is turned off, the
positive totalizer is displayed in Window M02.
Factory default is “ON”.
Menu
Menu 33
Tot al i zer Mul t i pl i er
3.
x1
14:59:50
Q=97
4
ON/OFF Net Totalizer
On/off net Totalizer. “ON” indicates the totalizer is
turned on, while “OFF” indicates it is turned off.
When it is turned off, the net totalizer displays in
Window M00 will not change. Factory default is
“ON”.
Menu
Menu 32
Tot al i zer Uni t s
Cubi c Met er s ( m3)
14:59:30
Q=97 R
Menu 35
POS Tot al i zer
ON
15:01:00
Q=97 R
6
ON/OFF NEG Totalizer
ON/OFF negative totalizer. “ON” indicates the
totalizer is turned on. When it is turned off, the
negative totalizer displays in Window M03.
Factory default is “ON”.
Version: 1.1
Menu 36
NEG Tot al i zer
ON
15:01:20
Q=97
R
Page 26 of 42
LRF-3000H Handheld Ultrasonic Flowmeter
Menu
3
7
Totalizer Reset
>
<
Totalizer reset; all parameters are reset. Press Enter ;
move + or - arrow to select “YES” or “NO”.
After “YES” is selected, the following options are
available:
Menu 37
Tot al i zer Reset
Sel ect i on
15:01:40
Q=97
R
None, All, NET, POS, NEG
If it is necessary to recover the factory default ,
keys after the above-mentioned characters
press
are displayed on the screen.
Generally, it is unnecessary to activate this function
except during the initial installation.
ATTENTION:
This operation will cancel all the data and revert back to factory default. Be careful with this
operation.
Menu
3
8
Manual Totalizer
The manual totalizer is a separate totalizer. Press Enter
to start, and press Enter to stop it. It is used for flow
measurement and calculation.
Menu
4
0
Damping
The damping factor ranges from 0~999 seconds. 0
indicates no damping; 999 indicate the maximum
damping. The damping function will stabilize the flow
display. Usually a damping factor of 3 to 10 is
recommend in most applications.
Menu
4
Menu 38
Manual Tot al i zer
Pr ess ENT When Ready
15:01:58
Q=97 R
Menu 40
Dampi ng
15:02:10
1 sec
Q=97
R
1
Low Flow Cutoff Value
If the flow rate falls below the low flow cutoff value,
the flow indication is driven to zero. This function can
prevent the flowmeter from reading flow after pump
shut down but there is still liquid movement in the
pipe, which will result in totalization error.
Generally, 0.03m/s is recommended to enter as the
low flow cutoff point. The low flow cutoff value has
no relation to the measurement results once the
velocity increases over the low flow cutoff value.
Version: 1.1
Menu 41
Low Fl ow Cut of f Val
0. 01m/ s
15:02:20
Q=97 R
Page 27 of 42
LRF-3000H Handheld Ultrasonic Flowmeter
Menu
4
2
Set Zero
When fluid is in the static state (no movement), the
displayed value is called “Zero Point”. When “Zero
Point’ is not at true zero in the flowmeter, the
difference is going to be added into the actual flow
values and measurement differences will occur in the
flowmeter.
Set zero must be carried out after the transducers are
installed and the flow inside the pipe is in the absolute
static state (no liquid movement in the pipe). Thus,
the“Zero Point” resulting from different pipe
mounting location and parameters can be eliminated.
The measuring accuracy at low flow is enhanced by
doing this function and flow offset is eliminated.
Press ENT , wait for the processing instructions at the
bottom right corner of the display to reach 0.
Performing Set zero with existing flow may cause the
flow to be displayed as “0”. If so, it can be recovered
via Window M43.
Menu
4
3
Reset Zero
Select “YES”; reset “Zero Point” which was set by the
user.
Menu
4
Menu 42
Set Zer o
Pr ess ENT t o go
15:02:30
Q=97 R
Menu 43
Reset Zer o
NO
15:02:58
Q=97
R
4
Manual Zero Point
This method is not commonly used. It is only suitable
for experienced operators to set zero under conditions
when it is not preferable to use other methods.
Enter the value manually to add to the measured value
to obtain the actual value. For example:
Actual measured value
=250 m3/H
Value Deviation
=10 m3/H
Flowmeter Display
=240 m3/H
Menu 44
Manual Zer oPoi nt
0 m3/ h
15:03:15
Q=97 R
Normally, set the value as “0”.
Menu
4
5
Scale Factor
The scale factor is used to modify the measurement
results. The user can enter a numerical value other
than “1” according to calibration results.
Menu 45
Scal e Fact or
15:03:15
Version: 1.1
1
Q=97 R
Page 28 of 42
LRF-3000H Handheld Ultrasonic Flowmeter
Menu
5
5
Current Loop Mode Select
Menu
5
0.
4-20mA output mode
1.
4-20mA Corresponding Velocity
Menu 55
CL Mode Sel ect
0. 4- 20mA
15:03:30
Q=97 R
6
CL 4mA Output Value
Set the CL output value according to the flow value at
4mA. The flow unit’s options are as same as those in
Window M31. Once “velocity 4-20mA”is selected in
Window M55, the unit should be set as m/s if it is the
velocity unit selected.
Menu
5
7
20mA Output Value
Set the CL output value according to the flow value at
20mA. The flow unit is the as same as that found in
Window M31. Once “velocity 4-20mA”is selected in
Window M55, the unit should be set as m/s, if m/s is
the velocity selection.
Menu
5
>
<
5
6
Menu 58
CL Checkup
Pr ess ENT When Ready
15:04:20
Q=97 R
9
CL Current Output
Display CL current output. The display of 10.0000mA
indicates that CL current output value is 10.0000mA.
If the difference between displaying value and CL
output value is too large, the current loop then needs
to be re-calibrated accordingly.
Menu
Menu 57
CL 20mA Out put Val ue
681300 m3/ h
15:03:50
Q=97 R
8
CL Check Verification
Check if the current loop has been calibrated before
+
or
leaving the factory. Press Enter move
separately to display 0mA, 4mA till 24mA, and at the
same time, check with an ammeter to verify that CL
output terminals M31 and 32 agree with the displayed
values. It is necessary to re-calibrate the CL if it is
over the permitted tolerance. For more information,
refer to “Analog Output Calibration”.
Menu
Menu 56
CL 4mA Out put Val ue
1 m3/ h
15:03:30
Q=97 R
0
Version: 1.1
Menu 59
CL Cur r ent Out put
3. 9999mA
15:04:40
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Date and Time Settings
Page 29 of 42
LRF-3000H Handheld Ultrasonic Flowmeter
Generally, it is unnecessary to modify date time as the
system is provided with a highly reliable perpetual
calendar chip.
The format for setting time setting is 24 hours. Press
Enter
, wait until “>” appears, the modification can be
made.
Menu
6
7
Menu 70
LCD Backl i t Opt i on
1. Al ways ON
15:06:10
Q=97
“1. Always On”;
“0. Always off”.
7
8
2
Wor ki ng Ti mer
00000417:08:00
15:06:20
Q=97
R
Menu 82
Dat e Tot al i zer
0.
Day
15:08:05
Q=97
R
>
<
Date Totalizer
The following options are available:
0. Day
1. Month
2. Year
In this window, it is possible to review the historical
flow data Totalizer for any day for the last 64 days,
any month for last 64 months and any year for last 5
years.
Press Enter , use the + or - to review Totalizer
in days, months and years. Left upper corner: “00-63”
indicates the file numbers;
For example, to display the flow total for July 18,
2000, the display “------------” at the upper right corner
of the screen indicates that it was working properly
the whole day. On the contrary, if “G” is displayed, it
Version: 1.1
R
Menu 72
2
Working Timer
Display the totalized working hours of the Flowmeter
since last reset. It is displayed by HH:MM:SS. If it is
necessary to reset it, press Enter , and select “YES”.
Menu
Menu 61
Ul t r asoni c Fl owmet er
S/ N=12580001
15:05:10
Q=97 R
0
Display Backlight Control
Menu
HH:MM:SS
15:05:00
Q=97 R
1
ESN
Display electronic serial number (ESN) of the
instrument. This ESN is the only one assigned to each
flowmeter ready to leave the factory. The factory uses
it for file setup and for management by the user.
Menu
Menu 60
YY- MM- DD
10- 03- 08
15:05:00
indicates that the instrument gain was adjusted at
leastonce. Probably it was offline once on that day. If
“H” is displayed, it indicates that poor signal was
detected at least once. Also, it indicates that the
Page 30 of 42
LRF-3000H Handheld Ultrasonic Flowmeter
operation was interrupted or problems occurred in the
installation.
Menu
8
3
Automatic Flow Correction
With the function of automatic flow correction, the
flow lost in an offline session can be estimated and
automatically adjusted. The estimate is based on the
average value, which is obtained from flow rate before
going offline and flow measured after going online the
next time, multiplied times the time period that the
meter was offline. Select “NO” to cancel this function.
Menu
9
0
Signal Strength and Signal Quality
Display the measured signal strength and signal
quality Q value upstream and downstream.
Signal strength is indicated from 00.0 ~ 99.9. A
reading of 00.0 indicates no signal detected, while
99.9 indicates maximum signal strength. Normally the
signal strength should be ≥60.0. Signal quality Q is
indicated by 00 ~ 99. Therefore, 00 indicates the
poorest signal while 99 indicates the best signal.
Normally, signal quality Q value should be better than
50.
Menu
9
9
9
Menu 91
TOM/ TOS* 100
0. 0000
15:08:45
Q=97
R
2
Fluid Sound Velocity
Display the measured fluid sound velocity. Normally
this value should be approximately equal to the
entered value in Window M21. If the difference is too
large, it probably results from an incorrect value
entered in Window M21 or improper installation of
the transducers.
Menu
Menu 90
St r engt h+Qual i t y
UP:90. 5 DN:90. 0 Q=97
15:08:25
Q=97 R
1
TOM/TOS*100
Display the ratio between the actual measured
transmit time and the calculated transmit time
according to customer’s requirement. Normally the
ratio should be 100±3%. If the difference is too large,
the user should check that the parameters are entered
correctly, especially the sound velocity of the fluid
and the installation of the transducers. This data is of
no use before the system is ready.
Menu
Menu 83
Aut omat i c Cor r ect i on
OFF
15:08:15
Q=97 R
3
Total Time and Delta Time
Version: 1.1
Menu 92
Fl ui d Sound Vel oci t y
1482. 6 m/ s
15:08:56
Q=97 R
Display the measured ultrasonic average time (unit:
nS) and delta time of the upstream and downstream
(unit: nS) time. The velocity calculation in the
Page 31 of 42
LRF-3000H Handheld Ultrasonic Flowmeter
Flowmeter is based on the two readings. The delta
time is the best indication that the instrument is
running steadily. Normally the fluctuation in the ratio
of the delta time should be lower than 20%. If it is not,
it is necessary to check if the transducers are installed
properly or if the parameters have been entered
correctly.
Menu
4
9
Reynolds Number and Factor
Display the Reynolds number that is calculated by the
Flowmeter and the factor that is set currently by the
Flowmeter. Normally this scaling factor is the average
of the line and surface velocity factor inside the pipe.
<
Menu
+
<
+
<
+
R
Menu +0
ON/ OFF Ti me
Pr ess ENT When Ready
15:08:59
Q=97 R
1
Total Working Hours
With this function, it is possible to view the total
working hours since the flowmeter left the factory.
Menu
Menu 94
Reynol ds Number
292582 0. 7500
15:08:34
Q=97
0
Power ON/OFF Time
To view the power on/off time and flow rate for the
last 64 update times to obtain the offline time period
and the corresponding flow rate. Enter the window,
press ENT to display the last update before the last 64
times of on/off time and flow rate values. “ON” on
right hand indicates that time power is on; “00” on the
upper left corner indicates “00-07-18 12:40:12” the
date time; flow rate is displayed in the lower right
corner.
Menu
Menu 93
Tot l Ti me, Del t a Ti me
0. 0000uS,- 1357. 0nS
15:08:13
Q=97 R
Menu +1
Tot al Wor k Hour s
00000517:23:40
15:09:12
Q=97
R
2
Last Power Off Time
Display the last power off time.
Version: 1.1
Menu +2
Last Power Of f Ti me
10- 03- 08 13:57:20
15:09:34
Q=97 R
Page 32 of 42
LRF-3000H Handheld Ultrasonic Flowmeter
<
Menu
+
3
Last Flow Rate
Display the last flow rate.
<
Menu
+
Menu +3
Last Fl ow Rat e
0 m3/ h
15:09:48
Q=97
R
4
Total ON/OFF Times
Display total on/off times since the flowmeter left the
factory.
Menu +4
ON/ OFF Ti mes
15:09:59
Version: 1.1
460
Q=97 R
Page 33 of 42
LRF-3000H
Handheld Ultrasonic Flowmeter
7. Error Diagnosis
The ultrasonic Flowmeter has advanced self-diagnostics functions and displays any errors in the upper right
corner of the LCD via definite codes in a date/time order. Hardware error diagnostics are usually performed upon
each power on. Some errors can be detected during normal operation. Undetectable errors caused by incorrect
settings and unsuitable measurement conditions can be displayed accordingly. This function helps to detect the
errors and determine causes quickly; thus, problems can be solved in a timely manner according to the solutions
listed in the following tables.
Errors displayed in the Flowmeter are divided into two categories:
Table 1 is for errors displayed during self-diagnostics upon power on. “*F” may be displayed on the upper left
corner of the screen after entering the measuring mode. When this occurs, it is necessary to power on for
self-diagnostics once again to detect and solve possible errors using the table below. If a problem still exists,
please contact the factory or the factory’s local representative for assistance.
Table 2 applies when errors caused by incorrect settings and signals are detected and are announced by error codes
displayed in Window M08.
7.1. Table 1. Self-diagnosis and Error Solutions (upon power on)
Cause
Solution
Rom Parity Error
* System ROM illegal or error
* Contact the factory
Stored Data Error
* System stored data block error
* Power on again or contact the
factory
SCPU Fatal Error
* SCPU circuit fatal error
* Power on again or contact the
factory
* System clock error
* Contact the factory
CPU or IRQ Error
CPU or IRQ problem
* Power on again
System RAM Error
* System RAM questionable
Time or Bat Error
* System date time chip error
No Display, Erratic or Abnormal
Operation
* Bad wiring connection
LCD
Display
Timer Slow Error
Timer Fast Error
Version: 1.1
* Power on again or contact the
factory
* Power on again or contact the
factory
* Check wiring connections
Page 34 of 42
LRF-3000H
Handheld Ultrasonic Flowmeter
7.2. Table 2. Error Codes and Solutions (during operation)
Code
*R
*J
*I
M08 Display
System Normal
SCPU Fatal Error
Signal Not Detected
Cause
Solution
* System normal
* No errors
* Hardware defect
* Contact the factory
* Signal not detected
* Attach transducer to the pipe and tighten it securely.
Apply a plenty of coupling compound on
transducer and pipe wall.
* Spacing is not correct between the transducers
or not enough coupling compound applied to face
of transducers.
*Transducers installed improperly.
* Scale is too thick.
* New pipe liner.
* Remove any rust, scale, or loose paint from the
pipe surface. Clean it with a file.
* Check the initial parameter settings.
* Remove the scale or change the scaled pipe section.
Normally, it is possible to change a measurement
location. The instrument may run properly at a
new site with less scale.
* Wait until liners solidified and saturated.
*H
*H
*E
*F
Low Signal Strength
Poor Signal Quality
Current Loop over
20mA
* Low signal strength.
* Cause refers to above-mentioned reasons.
* Poor signal quality
* All reasons are included in the above-mentioned
causes.
* 4-20mA current loop over 120%.
*
Refer to Table 1
Improper settings to current loop output.
* Error in self-diagnoses during power on.
* Permanent hardware error. n.
*G
Adjusting Gain>S1
Adjusting Gain>S2
Adjusting Gain>S3
Adjusting Gain>S4
(Display in Windows
M00,
M01, M02, M03)
*K
Pipe Empty. Set in
Window M29
Version: 1.1
* Solution refers to above-mentioned solutions
* Solution refers to above-mentioned solutions
* Check settings(refer to Window M56)and confirm
if actual flow is too high.
* Power on again; resolve it by the method listed in
Table 1. If it is still a problem, contact the factory.
* Contact the factory.
* Adjusting gain for normal measurement.
* Stop in S1 or S2 and only switch between S1
and S2 indicates a poor waveform or low signal
strength. All reasons may be included in
above-mentioned items.
* No fluid in pipe or settings incorrect.
* Once fluid is detected in the pipe, set 0 in Window
M29.
Page 35 of 42
LRF-3000H
Handheld Ultrasonic Flowmeter
7.3. Frequently Asked Questions and Answers
Question: New pipe, high quality material, and all installation requirements met: why still no signal detected?
Answer: Check pipe parameter settings, installation method and wiring connections. Confirm if the coupling
compound is applied adequately, the pipe is full of liquid, transducer spacing agrees with the screen
readings and the transducers are installed in the right direction.
Question: Old pipe with heavy scale inside, no signal or poor signal detected: how can it be resolved?
Answer: Check if the pipe is full of fluid. Try the Z method for transducer installation (If the pipe is too close to
a wall, or it is necessary to install the transducers on a vertical or inclined pipe with flow upwards
instead of on a horizontal pipe).
Carefully select a good pipe section and fully clean it, apply a wide band of coupling compound on
each transducer face (bottom) and install the transducer properly.
Slowly and slightly move each transducer with respect to each other around the installation point until
the maximum signal is detected. 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.
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 a layer of scale between the transducers and pipe inside wall).
Question: Why is there no CL (current loop) output?
Answer: Check if the desired current output mode is set in Window M55. See if the CL is powered off by “ CL
Off” settings.
Open the electronics enclosure to inspect the hardware circuit. Check to see if the short-circuit terminal
near terminal 3 is in place, i.e. Direct Output Mode (set CL output as Transmitter Mode with external
power supply).
Question: Why is the CL output abnormal?
Answer: Check to see if the desired current output mode is set in Window M55.
Check to see if the maximum and minimum current values are set properly in Windows M56 and M57.
Re-calibrate CL and verify it in Window M49.
Question: Why is the flow rate still displayed as zero while there is fluid obviously inside the pipe and a symbol
of “R” displayed on the screen?
Answer: Check to see if “Set Zero” was carried out with fluid flowing inside the pipe (Refer to Window M42).
If it is confirmed, recover the factory default in Window M43.
Version: 1.1
Page 36 of 42
LRF-3000H
Handheld Ultrasonic Flowmeter
8. Product Overview
8.1
Introduction
The Model LRF-3000H Handheld Ultrasonic Flowmeter is a state-of-the-art universal transit-time flowmeter
designed using SLSI technology and low-voltage broadband pulse transmission. While principally designed for
clean liquid applications, the instrument is tolerant of liquids with the small amounts of air bubbles or suspended
solids found in most industrial environments.
8.2
Features of Flowmeter
With distinctive features such as high precision, high reliability, high capability and low cost, the flowmeter
features other advantages:
1. With SLSI COMA chip, low power consumption, high reliability, anti-jamming and outstanding benfits.
2. Clear, user-friendly menu selections make flowmeter simple and convenient to use.
U.S., British and Metric measurement units are available. Meanwhile, almost all-universal measurement units
worldwide may be selected to meet customer’s requirements.
3. Daily, monthly and yearly totalized flow: Totalized flow for the last 64 days and months as well as for the last 5
years are may be viewed. Power on/off function: allows the viewing of time and flow rate as power is switched on
and off 64 times. Also, the flowmeter has manual or automatic amendment during offline sessions.
4. With the SD Card, 512 files can be stored; the time interval can be within 5 seconds.
5. Parallel operation of positive, negative and net flow totalizes with scale factor and 7 digit display.
The flow meter ensures the higher resolution and wider measuring range by the 0.04nS high resolution, high
linearity and high stability time measuring circuit and 32 bits digits processing program.
8.3
Theory of Operation
When the ultrasonic signal is transmitted through the flowing liquid, there will be a difference between the
upstream and downstream transit time (travel time or time of flight), which is proportional to flow velocity,
according to the formula below.
V =
MD
ΔT
×
sin 2θ Tup • Tdown
Remarks:
V
Medium Velocity
M
Ultrasonic frequency of reflection
D
Pipe Diameter
θ
The angle between the ultrasonic signal and
the flow
Tup
Transit time in the forward direction
Tdown Transit time in the reverse direction
ΔT=Tup–Tdown
Downstream Transducer
Tdown
Flow
Tup
D
Upstream Transducer
Version: 1.1
Page 37 of 42
LRF-3000H
Handheld Ultrasonic Flowmeter
8.4. Applications
• Water, sewage (with low particle content) and seawater
• Water supply and drainage water
• Power plants (nuclear power plant, thermal and hydropower plants), heat energy, boiler feed water and
energy management system
• Metallurgy and mining applications (cooling water and acid recovery, for example)
• Petroleum and chemicals
• Food, beverage and pharmaceutical
• Marine operation and maintenance
• Energy economy supervision and water conservation management
• Pulp and paper (clean liquid applications)
• Pipeline leak detection
• Regular inspection, tracking and collection
• Energy measuring and balance
• Network monitoring systems and energy/flow computer management
Version: 1.1
Page 38 of 42
LRF-3000H
Handheld Ultrasonic Flowmeter
8.5. Specifications
Performance
Flow range
0~40 ft/s (0~±12 m/s)
Accuracy
±1%
Repeatability
0.3%
Linearity
±1%
Pipe Size
1 in to 48 in(25~1200 mm)
Functional
Output
Analog output: 4~20mA,Max 750Ω
Storage:2GB
SD card
Max:512 files
Interval:5~60 seconds
Power Supply
11.1V rechargeable Lithum Battery Power (continuous operation of main
battery 16 hours)
Keypad
Tactile Keys
Display
64×128 alphanumeric,backlit LCD
Temperature
Humidity
Transmitter: -10℃~50℃
Measuring medium: - 40℃~80℃(Standard)
0~99%RH, non-condensing
Physical
Transmitter
NEMA13 (IP54)
Transducer
Encapsulated design, IP68
Standard cable length:5m
Weight
Transmitter:1kg
Version: 1.1
Page 39 of 42
LRF-3000H
Handheld Ultrasonic Flowmeter
9. Appendix1 - Flow Application Data
9.1
Sound Velocity and Viscosity for Fluids Commonly Used
Fluid
Sound
Velocity (m/s)
Viscosity
water 20℃
1482
1.0
water 50℃
1543
0.55
water 75℃
1554
0.39
water 100℃
1543
0.29
water 125℃
1511
0.25
water 150℃
1466
0.21
water 175℃
1401
0.18
water 200℃
1333
0.15
water 225℃
1249
0.14
water 250℃
1156
0.12
Acetone
1190
Carbine
1121
9.2
Ethanol
1168
Alcohol
1440
Glycol
1620
Glycerin
1923
1180
Gasoline
1250
0.80
Benzene
1330
Toluene
1170
0.69
Kerosene
1420
2.3
Petroleum
1290
Retinal
1280
Aviation
kerosene
1298
Peanut oil
1472
Castor oil
1502
1.5
Sound Velocity for Various Materials Commonly Use
Pipe Material
Sound Velocity (m/s)
Liner Material
Sound Velocity (m/s)
Steel
3206
PTFE
1225
ABS
2286
Titanium
3150
Aluminum
3048
Cement
4190
Brass
2270
Bitumen
2540
Cast iron
2460
Porcelain enamel
2540
Bronze
2270
Glass
5970
Fiber glass-epoxy
3430
Plastic
2280
Glass
3276
Polyethylene
1600
Polyethylene
1950
PTFE
1450
PVC
2540
Rubber
1600
Version: 1.1
Page 40 of 42
LRF-3000H
9.3
Handheld Ultrasonic Flowmeter
Sound Velocity In Water (1 atm) At Different Temperatures
t(℃)
v(m/s)
0
1402.3
1
1407.3
2
1412.2
3
1416.9
4
1421.6
5
1426.1
6
1430.5
7
1434.8
8
1439.1
9
1443.2
10
1447.2
11
1451.1
12
1454.9
13
1458.7
14
1462.3
15
1465.8
16
1469.3
17
1472.7
18
1476.0
19
1479.1
20
1482.3
21
1485.3
22
1488.2
23
1491.1
24
1493.9
25
1496.6
26
1499.2
27
1501.8
28
1504.3
29
1506.7
30
1509.0
31
1511.3
32
1513.5
33
1515.7
34
1517.7
35
1519.7
36
1521.7
37
1523.5
38
1525.3
39
1527.1
40
1528.8
41
1530.4
42
1532.0
43
1533.5
44
1534.9
45
1536.3
46
1537.7
47
1538.9
48
1540.2
49
1541.3
50
1542.5
51
1543.5
52
1544.6
53
1545.5
54
1546.4
55
1547.3
56
1548.1
57
1548.9
58
1549.6
59
1550.3
60
1550.9
61
1551.5
62
1552.0
63
1552.5
64
1553.0
65
1553.4
66
1553.7
67
1554.0
68
1554.3
69
1554.5
70
1554.7
71
1554.9
72
1555.0
73
1555.0
74
1555.1
75
1555.1
76
1555.0
77
1554.9
78
1554.8
79
1554.6
80
1554.4
81
1554.2
82
1553.9
83
1553.6
84
1553.2
85
1552.8
86
1552.4
87
1552.0
88
1551.5
89
1551.0
90
1550.4
91
1549.8
92
1549.2
93
1548.5
94
1547.5
95
1547.1
96
1546.3
97
1545.6
98
1544.7
99
1543.9
Please contact the factory for other sound of the velocity of fuilds and materials.
Version: 1.1
Page 41 of 42
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