Long-run LRF-3000P User manual

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Preface
Thanks for purchasing the product!
The User’s Manual covers functions, settings, wiring and troubleshooting methods of this flowmeter.
Please carefully read this manual before use.
After reading the manual, please keep it in a proper place for reference when you operate the flowmeter.
Notes
Any modifications concerning function update in this manual will not be notified.
This manual has been carefully checked, if you find anything improper or any errors, please contact the
vendor.
If there are any differences between the flowmeter and its descriptions in this manual, please take the final
product as standard.
DO NOT fully or partially reprint or reproduce this manual.
Version
1.0.0
Warnings
For your safety, please carefully read the following safety warnings before use.

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Contents
1.1Product Liabilities and Quality Assurance............................................................ - 3 -
1.2Safety Instructions to Operators............................................................................. - 4 -
Chapter IIDescriptions of the Flowmeter............................................................................- 5 -
2.1Delivery Scope.............................................................................................................. - 5 -
2.2Measuring Principle.................................................................................................... - 7 -
2.3Application Scope........................................................................................................- 7 -
2.4 Nameplate................................................................................................................ - 8 -
3.3Connecting electrical cables..................................................................................... - 9 -
3.4Transmitter Connections......................................................................................... - 10 -
Chapter IV Operation Panel and Quick Start.................................................................. - 11 -
4.1 Power on..............................................................................................................- 11 -
4.2 Boot screen..............................................................................................................- 11 -
4.3Keyboard Operation................................................................................................. - 13 -
Chapter V Installation............................................................................................................ - 14 -
5.1Installation, Storage and Prompts........................................................................ - 14 -
5.2Pipe Design and Selection...................................................................................... - 15 -
5.3 Transducer Installation...........................................................................................- 18 -
Chapter VI Operation.............................................................................................................- 24 -
6.1Common Functions...................................................................................................- 25 -
6.2Description of Operation Menus.......................................................................... - 30 -
6.3Menu Configuration................................................................................................. - 32 -
Chapter VIII Communication Interface and Communication Protocol.................... - 47 -

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Copyrights and Data Protection
Content of this file has been carefully checked. We don’t promise that the content is totally correct and
completely identical with the latest version.
Content of this file and related products are under protection of China’s copyright laws. Without authorization in
writing of the Company, please DO NOT try to reproduce, transfer, transcribe or translate any parts of the
flowmeter including the source code to any languages or computer language in any forms or through electronic,
electromagnetic, optical or other means.
Without authorization in writing of the Company, please DO NOT reproduce, copy, reprint, translate or transfer
the manual or part of it to any electronic or readable media.
The designations and signs shown on the product are the registered trademark or trademark of the Company. All
other trademarks, product designations or company names quoted herein are only used for identification and
belong to the property of their respective owners.
Exception Clauses
The manufacturer shall bear no responsibilities for any consequences caused by the product in use, which
include penalties arising from any direct or indirect accidents or indirect losses.
The exception clauses shall be invalid if the manufacturer’s actions are intentional or the manufacturer has
culpable negligence. According to applicable laws, it is not allowed to confine implied warranties of the product,
or it is not allowed or it confines the compensation of some kind, and these rights are applicable to you, under
such cases, the above exception clauses or confinement may partially or completely inapplicable to you.
As for each purchased product, related product files and the manufacturer’s sales terms are applicable.
As for the content of these exception clauses, the manufacturer should reserve the right to make any corrections
in any form, at any time or for any reason with no need to issue any notifications in advance, and shall bear no
responsibilities in any forms arising from the corrections described herein.

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1.1 Product Liabilities and Quality Assurance
The purchaser should judge by himself whether the flowmeter is applicable or not, and shall bear related
responsibilities. The manufacturer would bear no responsibilities for any consequences arising from the
purchaser’s misuse of the flowmeter. The purchaser may lose the rights for quality assurance if the flowmeter or
the system is installed or operated in a wrong way. In addition, the corresponding “Standard Terms of Sale” is
also applicable, and shall be the basic conditions of the Sales Contract.
Information about this file
To avoid any injuries or any damages to the flowmeter, please DO carefully read this file and DO comply with
local standards, safety rules and accident prevention rules.
If you can’t understand this file, please ask the manufacturer or the vendor for help. As for any property loss or
personal injury arising from your misunderstandings, the manufacturer would bear no related responsibilities.
With this manual, you could set up correct operating conditions of this flowmeter to ensure safety and efficiency
in use.
In addition, special notes and safety measures will be marked through the following symbols.
Convention of graphic symbols
The following symbols will help you better understand the file.
Warning!
This symbol indicates electrically related safety prompts.
Caution!
Please DO pay attention to this symbol. Any slight negligence may cause severe health hazard and
may damage the flowmeter or related equipment and facilities in operation.
Prompts!
The symbol indicates related important information for operation.

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1.2 Safety Instructions to Operators
Caution!
For your safety, please carefully read the following safety instructions before use. With this manual,
you could set up correct operating conditions of this flowmeter to ensure safety and efficiency in use.
Only certified personnel who have received related training are allowed to install, use, operate and
maintain this flowmeter.
Caution!
1. When using the flowmeter in inflammable media, please take measures to prevent from fire or
explosion.
2. When operating the flowmeter in hazardous environment, DO follow the correct operation
steps.
3. When removing the flowmeter, please follow the fluid OEM’s safety instructions to avoid
splashing.
4. Pay attention to the flowmeter’s probe. Even a minor scratch or incision would influence its
accuracy.
5. To get the optimum efficiency, the longest calibration period could not exceed two years.

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Chapter II Descriptions of the Flowmeter
2.1 Delivery Scope
Prompts!
Please carefully check whether the packing case is damaged or loaded/unloaded in an improper way
or not. If it is damaged, please notify the delivery man and the manufacturer or the consignor and
describe the damage in details.
Prompts!
Please check the goods you received with the packing list.
Prompts!
Please check the flowmeter’s nameplate and conform whether the scope of supply is identical with
your order. Check whether the power information on the nameplate is correct or not; if not, please
contact the manufacturer or the dealer.

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Structural Configuration of Ultrasonic Flowmeter
Accessories
1. Carrying Case*1pc.
2. Transmitter (Electronic)*1pc.
3. Transducer (Sensor) *1 pair.
4. Mounting track *1 set, ST or DT
5. Pipe straps *2 pairs.
6. Coupling compound (Grease)*1 pc, Battery charge*1pc , Output cable*1pc and Tapeline*1

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2.2 Measuring Principle
This series of ultrasonic flowmeter is an industrial time-difference type ultrasonic flowmeter. It applies the latest
industrial-level PFGA 700-thousand-gate-array chip, which extremely improves the signal sampling frequency and
bubble tolerance rate; the self-developed TGA technology makes it be capable of dealing with more complex
logic and calculation to provide more accurate and faster measurements, and ensures the flowmeter could
endure non-continuous bubbles or impurities within 5 sec. In addition, it could be installed and operated in a
convenient way with no need to break the pipe or cut off the fluid or stop work.
Time-difference type ultrasonic measurement indicates determining the fluid flow along the average velocity
with the time difference between two ultrasonic signals transmitting downstream or upstream in the same
stroke.
In which,
v Fluid velocity
M Ultrasonic reflections
D Pipe diameter
θ Included angle between ultrasound signal and fluid
Tup Time that downstream transducer sends signal to
upstream
Tdown Time that upstream transducer sends signal to
downstream
△T =Tup-Tdown
2.3 Application Scope
It mainly applies for measuring the flow of homogeneous medium fluid in the following fields:
Domestic wastewater flow measurement, crude oil flow measurement, cementing slurry flow
measurement, oily sewage flow measurement in oil fields, water injection flow measurement in oil wells,
raw water flow measurement in rivers and reservoirs, tap water flow measurement, process flow
measurement of petrochemical products, industrial circulating water flow measurement, water
consumption measurement in production, mineral slurry flow measurement, pulp flow measurement,
chemical flow measurement, circulated cooling water flow measurement, generating coil cooling water
flow measurement (super small diameter), juice flow measurement, milk flow measurement, and so on.

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2.4 Nameplate
Prompts!
Please check the nameplate and confirm whether the goods are identical with your order or not.
Check whether the power supply on the nameplate is correct or not. The following shows
information on the nameplate:
Ultrasonic Flowmeter
Model:
Max. Operating
Temperature
℃
Specification
Pressure Rating
Mpa
Power Supply
VDC
Meter Factor
Accuracy Class
Measuring Range
Output
Product No.

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3.3 Connecting electrical cables
Warning!
Signal cables and power cables must be connected while the power is off.
Warning!
As specified, the meter must be connected to the protective ground terminal to protect operators
from electric shock.
Warning!
As for the meters to be used in hazardous areas, please pay attention to the safety and technical
prompts as specified in the professional explosion-proof instructions.
Caution!
Please strictly obey the local occupational health and safety regulations. Only trained personnel are
allowed to operate on electrical equipment.
Warning!
Voltage difference is not allowed between the measuring transducer and the housing or protective
ground cable of the electronic system.
The measuring transducer must be well grounded according to related standard DESIGN CODE OF
INSTRUMENT GROUNDING (HT/T 20513-2014).
The ground conductor shall not transmit any disturbance voltage.
The ground conductor is not allowed to connect other electrical equipment.

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3.4 Transmitter Connections
3.4.1. Power supply
Please pay special attention to the power supply. Please connect related power supply according to
the symbols of connecting terminals.
3.4.2. Transmitter connections
Once the flowmeter is installed at the designated place as required, you can start connections.
Open the case, you can see the connecting terminals on the power board from left to right as
follows:
Power
Power switch
Output
4-20mA or RS485
UP
DN
Charge
Warning!
Please ensure that the flowmeter is connected with the power off, and ensure that it has been
reliably grounded before use.
3.4.3 Power on
When switching the power on for the first time, the flowmeter will run automatically according to
the parameters you put last time (the meter is calibrated before leaving factory). After the
flowmeter is installed and powered on, you can check its status in M04 menu; if it displays “*R”, it
indicates that the flowmeter is running normally.
If you use the flowmeter in a new environment, you need to input related parameters. Any
parameters you input would be kept in its memories forever till you correct them again. If you need
to adjust its installation position or the position of the transducer, you need to input and set related
parameters again of the flowmeter to ensure normal use.
DO always finish all tasks when running. No matter in any displays, tasks including measurement and
output should be finished as usual.

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Chapter IV Operation Panel and Quick Start
4.1 Power on
Warning!
Please check the meter is correctly installed or not before power on, including:
Connecting the power supply as specified;
Please check the electrical connection of the supply power is correct or not.
4.2 Boot screen
The flowmeter is composed of the measuring transducer and the signal converter. And the delivery product is
ready for putting into use. All operating parameters and settings have been set according to your order
requirements.
(1) Boot screen
In normal display, press [ ] and [ ] keys to switch among NET Total, POS Total and NEG Total.
Go on pressing [ ] to enter M01 menu to display the flow rate, total flow and transient flow. The following
shows how to switch between the flow rate and the total flow.
Prompts!
"*R" indicates that the flowmeter is running normally; “D” indicates that the flowmeter is carrying out gain
setting; “E” indicates that the flowmeter can’t receive any ultrasound signals.
Flow Total
Flow Total
POS
NET
Net
POS
NET
NET
Flow Rate
Flow Rate

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Energy meter display function
Note:
It is a function of energy meter and only the ultrasound heat meter has this function.
Press [Menu] key and digital key [2], i.e.: Menu + 2, to enter M2 heat display interface shown as follows:
Transient heat quantity and temperature automatically switch and display for 6s, and it only displays the inlet
temperature and temperature difference. Press ENTER to stop switching, and continuously refresh the display
items; press ENTER again to recover.
Press [Menu] key and digital key [3], i.e.: Menu + 3, to enter M3 cold display interface shown as follows:
Transient cold quantity and temperature automatically switch and display for 6s, and it only displays the inlet
temperature and temperature difference. Press ENTER to stop switching, and continuously refresh the display
items; press ENTER again to recover display.
Note:
When using the heat function, the temperature difference displayed is positive, while using the cold function, the
temperature difference displayed is negative.
Heat
Heat
Cool
Cool

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4.3 Keyboard Operation
4.3.1 Descriptions
Use digits [0~9] and [ . ] to input digits or menu number.
[ ] key is used for left backspace or deleting the characters on left.
[ ] and [ ] keys are used for entering the previous or next menu; the key is plus or minus when inputting
digits.
[Menu] key is used for choosing menus. Press the key and then input menu number to enter related menu.
[Enter] key is used for entering the edit mode and confirm the corrections.
4.3.2 Keyboard Operation Methods
The flowmeter menu is divided into six modules according to the functions and field demands. You can directly
input the menu number to enter the menu and you also can switch through [ ] and [ ] keys.
If you need to correct the flowmeter parameters, please firstly switch to related menu, find out the parameter
you want to correct and then press [Enter] to confirm; input the data and then press [Enter] to confirm your
corrections.

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Chapter V Installation
5.1 Installation, Storage and Prompts
Prompts!
Please carefully check whether the packing case is damaged or loaded/unloaded in an improper way
or not. If it is damaged, please notify the delivery man and the manufacturer or the consignor and
describe the damage in details.
Prompts!
Please check the goods you received with the packing list.
Prompts!
Please check the nameplate and confirm whether the goods are identical with your order or not.
Check whether the power supply on the nameplate is correct or not; if not, please contact the
manufacturer or the vendor.
Storage!
• Please store the flowmeter in a dry and dust-free place;
• Avoid long-term direct sunlight;
• Keep the flowmeter in the original packing case;
Prompts!
To ensure reliable installation, DO take the following measures:
Before installing the flowmeter, DO take into account of the flowmeter’s diameter, pipe size and
installation position. Correct installation could ensure accurate output signals, less maintenance and
maximum performance.

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5.2 Pipe Design and Selection
The following should be taken into account when selecting a pipe:
5.2.1 Installation Environment
It’s better to install the flowmeter indoors; if you have to install it outdoors, you should take measures to avoid
direct sunlight or rainwater.
The flowmeter shall be installed away from high temperature, thermal radiation from equipment or corrosive
gas.
Ultrasonic flowmeters can’t be installed nearby motors, transformers or other power sources that are easy to
cause electromagnet interference. DO NOT install ultrasonic flowmeters nearby frequency converters or DO
NOT connect it with the distributing cabinet of frequency converters to avoid interference.
In convenience for installation and maintenance, keep sufficient space around the flowmeter.
5.2.2 Support of Flowmeter
Avoid installing the flowmeter on pipes with mechanical vibrations. If you have to install it there, DO take shock
absorption measure. You could install a hose for transition, or set support points with absorbing pads on the
pipe at 2DN in both upstream and downstream of the flowmeter. Try not to install the flowmeter on the longer
overhead pipes because the sagging of pipes would cause leakage between the flowmeter and the flanges. If
you have to do it, you must set support points on the pipe at 2DN in both upstream and downstream of the
flowmeter.
5.2.3 Requirements on Liquid-receiving Material
The ultrasonic flowmeter could measure single-medium liquid flow; The same medium could be divided into
three specifications (low temperature, high temperature and superhigh temperature), different flowmeters
should be used for different temperatures.
5.2.4 Dangerous Conditions
You could select the flowmeter with an explosion-proof housing, and intrinsic safety explosion-proof flowmeter
with intrinsic safety design circuit to ensure its safety and flame-retardant operation. Each flowmeter should
have a nameplate clearly identifying its certifications. Please DO install and use the flowmeter according to the
explosion-proof grade and protection grade as shown on the nameplate.

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Caution:
DO ensure that the flowmeter is filled. DO NOT make the liquid flow downwards vertically, or it
may have bubbles.
5.2.4 Requirements on the front/rear straight pipe sections
DO ensure a straight pipe section at least ten times of the pipe diameter (D) in the upstream of the
flowmeter and at least five times of the pipe diameter (D) in the downstream of the flowmeter. The
nominal accuracy depends on the pipe diameters in the upstream; according to the interference,
insufficient front/rear straight pipe sections may cause about 0.5% deviation.
To ensure measurement accuracy of the flowmeter, try to satisfy the following requirements on
the length of straight pipe sections installed nearby the flowmeter: upstream >20D,
downstream>10D.
Try not to disturb the upstream flow distribution. Ensure no valves, elbows or triplets; try to install
the control devices or throttles in the downstream if any, so as to ensure sufficient pipe flow at the
measurement point, details are shown below:
General conditions
Install after the elbow