4GLoRaWAN Low Power Wireless Ultrasonic Flow Meter - Battery Powered Wireless Cabling
1 Product Overview
- Product Introduction
DAQ-LP-UF4G low-power 4G/LoRaWANwireless communicationultrasonic flowmeterIt is a new generation non-contact flow measurement product independently developed byShanghai DAQ-IoTTechnology Co., Ltd. (brand: Shucai IoT). product adoptiontime difference methodThe principle of ultrasonic measurement consists of an ultrasonic flowmeter transmitter host, an externally clamped ultrasonic probe, a 4G battery powered acquisition module (model: DAQ-LP-GWRTU), and installation accessories. It can achieve accurate measurement of liquid flow inside the pipeline without damaging the pipeline or interrupting the fluid flow.
The product is equipped with a built-in 4G/LoRaWAN wireless communication module, which adopts a low-power design and battery power supply solution. It does not require external power supply and wiring, and is easy to install. It is particularly suitable for outdoor, temporary monitoring points, and application scenarios where wiring is difficult. Automatically upload device data toIoTcloud platformUsers can view Real-time traffic, accumulated water volume, and historical data curves anytime and anywhere through mobile apps or computer web pages, achieving remote, intelligent, and centralized management of traffic.
1.2 Model Description
The naming convention for this product model is as follows:
| field | meaning | Explanation |
|---|---|---|
| DAQ | Data Acquisition | Data Acquisition， Number of IoT product series prefixes |
| LP | low power consumption | Low Power， Battery powered low-power version |
| UF | Ultrasonic flow rate | Ultrasonic Flow， Ultrasonic flowmeter category |
| 4G/LoRa | communication method | Supports remote data transmission via 4G cellular or Lorawan wireless networks |
Table 1 Explanation of Model Naming Rules
Comparison of products in the same series: DAQ-GP-UF4G is the General Power version, suitable for installation scenarios with stable external power supply; DAQ-LP-UF4G is a low-power version powered by batteries, suitable for scenarios where there is no external power supply or wiring difficulties. The measurement principles and accuracy of the two are consistent, only the power supply method and power consumption management strategy are different.
1.3 Application Scenarios
This product is widely used in the following fields:
Flow monitoring of industrial circulating water and cooling water systems
Municipal water supply and drainage, tap water pipeline networkFlow measurement
HVAC chilled water and cooling water flow monitoring
distributed PV power station Cooling water/cleaning water flow monitoring
Flow monitoring of open channel pipelines for water conservancy and agricultural irrigation
Liquid flow measurement in industries such as chemical, pharmaceutical, food and beverage
Energy Management and Energy Monitoring System (EMS)
Temporary monitoring points, inspection and troubleshooting, and flow measurement in scenarios without power supply
2 Product Features
(1) Non contact external clamp measurement:ultrasonic probeExternally attached to the outer wall of the pipeline, without the need for pipe breakage or drilling, does not affect pipeline pressure and fluid quality, and installation and maintenance do not affect production operation.
(2) Low power battery supply:Adopting a low-power Hardware design and intelligent power management strategy, with a built-in large capacity lithium battery, the battery can last for 1-3 years under typical operating conditions without the need for frequent battery replacement.
（3）4GWireless remote transmission：built-in4G communication moduleSupports full network connectivity of China Mobile/China Unicom/China Telecom, with data automatically uploaded to the cloud without the need for communication cables, and can be installed and launched immediately.
(4) IoT Cloud platform:The supporting data acquisition IoT cloud platform supports centralized management of multiple devices, Real-time data monitoring, historical curve queries, and data report exports, meeting remote O&M needs.
(5) Multi terminal access:Supports multiple access methods such as mobile apps, WeChat mini programs, and computer web browsers, allowing users to view data anytime and anywhere without the need to install specialized software.
(6) Intelligent alarm push:Support multiple alarm conditions such as data overload, device offline, low battery, etc. The alarm information is pushed through the platform, SMS, or APP to timely grasp the abnormalities.
(7) Local LCD display:The host comes with an LCD display screen and operation buttons, allowing for on-site viewing of Real-time traffic, flow rate, cumulative volume, and signal quality, and supporting on-site parameter configuration.
(8) High protection level:The host and acquisition module are both designed with sealed enclosures, with a protection level ofIP65Adapt to harsh outdoor environments.
(9) Multiple installation methods:Supports various probe installation methods such as Z method, V method, N method, etc., suitable for a wide range of pipe diameters from DN15 to DN6000mm.
3 Technical parameters
3.1 Measurement of Performance Parameters
| Parameter item | technical indicators |
|---|---|
| Measuring principle | Time difference ultrasonic measurement |
| Applicable Pipe Diameter | DN15~DN6000 mm (external clamp type) |
| Flow velocity range | 0~± 12 m/s (bidirectional measurement) |
| measurement accuracy | ± 1.0% (full tubeSteady-state flowUnder certain conditions) |
| repetitiveness | ±0.2% |
| linearity | ±0.5% |
| Applicable fluids | Uniform single-phase liquids such as water, seawater, sewage, acid-base liquids, etc. (containing a small amount of bubbles or particles can also be measured) |
| fluid temperature | -40 ℃~+160 ℃ (standard probe); High temperature probe can reach+200 ℃ |
| Pipe material | Steel, cast iron, stainless steel, copper PVC、PE、 Dense homogeneous pipes such as fiberglass reinforced plastic |
| Installation method | Z method (large caliber), V method (small caliber), N method (small caliber)thick-walled pipe） |
| cumulative flow | Forward/reverse/net cumulative quantity, units can be selected from m ³, L, gal, etc |
| signal output | 4~20mA (optional)RS485 Modbus-RTUPulse output (optional) |
Table 2 Measurement Performance Parameters
3.2 Electrical and Communication Parameters
| Parameter item | technical indicators |
|---|---|
| Host power supply | DC 8~36V (powered by the acquisition module) |
| Power supply for acquisition module | Built in large capacity lithium battery (3.6V/19Ah, replaceable) |
| low power mode | Support sleep/timed collection/timed upload, with an average working current of<50mA |
| battery life | Typical operating conditions (collected/uploaded every 15 minutes) take about 1-3 years (depending on the settings and ambient temperature) |
| communication method | 4G LTE (China Mobile/China Unicom/China Telecom), backward compatible with GPRS |
| Communication Protocol | MQTT / TCP， Support data acquisition IoT cloud platform access |
| Local interface | RS485（Modbus-RTU）， Support docking with PLC/touch screen/DTU |
| data storage | Local circular storage, automatic transmission when disconnected from the network |
| sampling interval | 1 minute to 24 hours configurable |
| Upload interval | 1 minute to 24 hours configurable |
| antenna | External 4Gsuction cup antenna(Standard 3-meter extension cable) |
Table 3 Electrical and Communication Parameters
3.3 Environmental and Physical Parameters
| Parameter item | technical indicators |
|---|---|
| Operating temperature | Host: -20 ℃~+60 ℃; Collection module: -20 ℃~+60 ℃; Probe: -40 ℃~+160 ℃ |
| Storage temperature | -40℃ ~ +80℃ |
| Relative humidity | ≤ 95% RH (non condensing) |
| Protection rating | Host IP65; Acquisition module IP65; probeIP68 |
| Explosion-proof grade | Non explosion proof (intrinsic safety)Explosion-proof typeOptional) |
| host size | Approximately 200 x 140 x 70 mm (length x width x height) |
| Collection module size | Approximately 120 × 90 × 55 mm (length × width × height) |
| Probe size | Approximately 45 × 30 × 30 mm (per piece) |
| host weight | About 0.8 kg |
| Weight of collection module | About 0.3 kg (including battery) |
| Shell material | Host: Aluminum alloy spray coating; Collection module: ABS flame-retardant plastic; Probe: Aluminum alloy |
| Signal line length | Standard 5-meter (customizable extension) |
Table 4 Environmental and Physical Parameters
4 Product Composition and Structure
The standard configuration of DAQ-LP-UF4G low-power 4G ultrasonic flowmeter consists of the following parts, which work together to complete the taskflow measurementRemote transmission of data.
Figure 1 Physical picture of DAQ-LP-UF4G product (host, acquisition module, probe and accessories)
4.1 Ultrasonic flowmeter host
The host is a blue aluminum alloy shell transmitter, equipped with an LCD display screen and 5 operation buttons (Menu button, up/down/left/right navigation button) on the front, and 5 M12 waterproof aviation connectors at the bottom for connecting probes, power supplies, and communication cables. The host is responsible for the transmission and reception of ultrasonic signals, time difference calculation, flow conversion, and local display.
The display screen can show key parameters such as instantaneous flow rate (m ³/h), flow velocity (m/s), positive cumulative amount (m ³), signal strength Q value, etc.
4.2 4G battery powered acquisition module
The model of the acquisition module is DAQ-LP-GWRTU, with a white ABS waterproof shell, built-in large capacity lithium battery and 4G communication module. Module throughRS485 interfaceCommunicate with the flowmeter host, collect flow data and upload it to the data acquisition IoT cloud platform via 4G network. The module shell label indicates the brand, model, communication method, production date, and manufacturer information, and is accompanied by a device QR code for platform binding.
The module hasLow power managementFunction: It can work at scheduled intervals according to the set collection and upload intervals, and enter sleep mode at other times to save power.
4.3 External clamp type ultrasonic probe
Standard configuration includes a pair of clamp type ultrasonic probes, labeled with "UP" (upstream/transmitter) and "DN" (downstream/receiver) respectively, with a blue aluminum alloy casing and a protection level of IP68. The probe is connected to the host through a dedicated signal line, and is attached to the outer wall of the pipeline with a coupling agent during installation. The flow velocity is calculated using the time difference of ultrasonic propagation in the fluid.
4.4 Signal lines and installation accessories
Standard configuration includes two dedicated signal lines with identification (upstream UP: red+black -); Downstream DN: red+black -), length 5 meters. Installation accessories include stainless steel clamps（hose clamp）、coupling agentCable ties, etc. are used to firmly fix the probe to the outer wall of the pipeline.
5 Installation Guide
5.1 Pre installation inspection
Please check the following before installation:
Confirm that the product model, accessories are complete, and the appearance is undamaged;
Confirm that the material, diameter, and wall thickness parameters of the tested pipeline are known;
Confirm that the fluid inside the pipeline is in a full state and is a uniform single-phase liquid;
Prepare installation tools: wrench, sandpaper, tape measure, marker pen, coupling agent, etc;
Confirm that the installation location has sufficient operating space and good 4G signal (can be tested using a mobile phone signal).
5.2 Selection of Installation Location
The correct selection of installation location is the key to ensuring measurement accuracy. Please follow the following principles:
chooseStraight pipe sectionThe length of the upstream straight pipe section shall not be less than 10 times the pipe diameter (10D), and the downstream shall not be less than 5 times the pipe diameter (5D);
Avoid flow disturbance components such as valves, elbows, tees, pumps, and reducers, and locate them at a sufficient distance downstream;
For horizontal pipelines, the probe should be installed on the side of the pipeline (3 o'clock or 9 o'clock direction), avoiding installation at the top (prone to gas accumulation) or bottom (prone to sedimentation);
RegardingVertical pipelineThe fluid should flow from bottom to top to ensure that the pipe is full;
The installation location should be easy to operate and maintain, avoiding high temperature, strong corrosion, and strong vibration areas;
The 4G acquisition module should be installed in a location with good signal quality, and the antenna should be placed outdoors or in a location with less metal obstruction as much as possible.
5.3 Probe installation method
| Installation method | Applicable Pipe Diameter | Explanation |
|---|---|---|
| V method | DN15 ~ DN300 mm | The most common method is to install two probes on the same side of the pipeline, and receive ultrasonic waves after reflection from the pipeline wall,ShengchengLonger, suitable for small and medium-sized thin-walled pipes. |
| Z method | DN300 ~ DN6000 mm | Two probes are installed on opposite sides of the pipeline, and ultrasonic waves directly penetrate the fluid with strong signals, suitable for large-diameter thick walled pipes. |
| N method | DN15~DN100 mm (thick wall) | Two probes are installed on the same side, and ultrasonic waves are reflected twice by the pipe wall, which is suitable for small-diameter thick walled pipelines and improves signal quality. |
Table 5 Selection of Probe Installation Methods
5.4 Installation steps
Step 1: Pipeline surface treatment: Use sandpaper to polish the installation position, remove paint, rust, and dirt until a metallic luster is exposed, ensuring a smooth surface.
Step 2: Apply coupling agent: Apply a layer of coupling agent evenly on the contact surface of the probe and the installation position of the pipeline, eliminate bubbles, and ensure good transmission of ultrasonic waves.
Step 3: Locate the probe: Mark the UP (upstream) and DN (downstream) probe positions with a tape measure and marker pen according to the installation distance (probe spacing) prompted in the host menu.
Step 4: Fix the probe: Attach the probe to the pipeline at the marked position, tighten the probe with a stainless steel clamp, and ensure that the probe is tightly attached to the pipe wall without looseness.
Step 5: Connect the signal line: Connect the UP probe cable to the host UP terminal, and connect the DN probe cable to the DN terminal, paying attention to the red positive and black negative polarity.
Step 6: Signal detection: Enter the host menu to check the signal strength Q value. The Q value should be between 60-100 and stable, otherwise the probe position needs to be adjusted or the coupling agent needs to be reapplied.
Step 7: Install the host and acquisition module: Fix the host and acquisition module on the wall or bracket, connect the RS485 communication line and power supply line, and fix the 4G antenna.
Step 8: Power on Test: Power on the acquisition module (insert battery or connect power), confirm that the host display is normal, the 4G indicator light of the acquisition module flashes, and the platform device is online.
6 Wiring Instructions
6.1 terminal blockdefinition
| Terminal/Interface | Identifier | Functional Description |
|---|---|---|
| Probe interface 1 | UP | Upstream probe connection port (transmitting end), red+black- |
| Probe interface 2 | DN | Downstream probe connection port (receiving end), red+black- |
| power input | DC IN | DC power input, DC 8~36V (powered by the acquisition module) |
| RS485 | A / B | RS485 communication interface, A positive and B negative, connected to the acquisition module |
| 4G antenna | ANT | External 4G suction cupAntenna interface |
| 4~20mA | OUT | Analog output (optional configuration) |
Table 6 Definition of Wiring Terminals
6.2 System Wiring Diagram
The system wiring relationship is as follows: ultrasonic probe (UP/DN) → flowmeter host (probe interface) → RS485 communication line → 4G battery powered acquisition module (RS485 interface) → 4G network → data acquisition IoT cloud platform. The acquisition module also provides working power to the host.
Wiring precautions:
The polarity of the probe cable cannot be reversed, and UP and DN are not interchangeable;
RS485 communication line A should be connected to A, B should be connected to B, and cannot be reversed;
All joints should be tightened to ensure waterproof sealing;
Signal lines should be kept away from strong electrical cables to avoid interference;
4G antennas should be placed outdoors or in areas with good signal quality and cannot be shielded.
7 Operating Instructions
7.1 Key Functions
| button | Identifier | Functional Description |
|---|---|---|
| Menu key | Menu | Enter/exit menu, confirm selection |
| Up key | ▲ | Move the menu up and increase the value |
| Down arrow key | ▼ | The menu moves down and the values decrease |
| left button | ◀ | Move the cursor left to return to the previous level |
| right-click | ▶ | Move the cursor to the right to enter the next level/confirm |
Table 7 Key Function Description
7.2 Display Interface
The host LCD display screen defaults to displaying the following information:
| Display item | meaning | unit |
|---|---|---|
| traffic | instantaneous flow rate | M ³/h (switchable between L/s, m ³/d, etc.) |
| flow velocity | Average fluid velocity | m/s |
| Positive accumulation | Positive cumulative traffic | m³ |
| Q = | Signal strength/received signal quality | 0~100, the larger the value, the better the signal |
Table 8 Display Screen Information Description
7.3 Basic parameter settings
After the first installation, the following pipeline parameters need to be set through the host menu to ensure accurate measurement:
Outer diameter (OD) of pipeline: Measure the circumference of the pipeline with a tape measure to calculate the outer diameter, or directly refer to the pipeline specifications;
Pipeline Wall Thickness (WT): Refer to pipeline specifications or usethickness gaugeMeasurement;
Pipeline material: Select the corresponding material (steel, cast iron, stainless steel, PVC, etc.);
Fluid type: Select the type of fluid being tested (water, seawater, sewage, etc.);
Installation method: choose V method, Z method or N method;
Probe installation distance: After setting, the host automatically calculates and displays the probe spacing, and installs the probe according to this distance;
Flow unit: Select instantaneous flow and cumulative flow units;
Accumulated amount reset: Perform forward/reverse accumulated amount reset operation in the menu.
8 IoT platform application
8.1 Platform Overview
The data acquisition IoT cloud platform is a device access and development independently developed by Shanghai DAQ-IoT Network Technology Co., LtdData management platformProvide one-stop services such as data storage, display, analysis, and alarm for DAQ-LP-UF4G flow meters. The platform adopts B/S architecture, supports concurrent access of massive devices, ensures data security and reliability, and can be flexibly expanded.
8.2 Equipment Launch and Binding
The platform access parameters are pre-set before the device leaves the factory, and users only need to follow these steps to complete the device binding:
Log in to theIoTcloud platform website or mobile app, register an account, and log in;
Click on 'Add Device', scan the QR code on the collection module casing or manually enter the device SN number;
Fill in the device name, installation location, and other information to confirm the binding;
After the device is powered on, it automatically connects to the platform, and the status display "online" indicates successful online connection;
You can view the traffic data of Real-time on the device details page.
8.3 Real-time Data Monitoring
The platform supports multi terminal Real-time data viewing:
Computer web version: Log in to the platform's official website and view the traffic, flow rate, cumulative amount, signal strength, battery level, etc. of each device in "Real-time" or "Data Dashboard";
Mobile APP: Download the "Data Acquisition IoT" APP and log in to view device data anytime, anywhere on your phone;
WeChat Mini Program: Search for the "Data Collection IoT" mini program and quickly view it without downloading or installing it;
Data dashboard: supports custom large screen display, centralizing the display of key equipment data on the monitoring center large screen.
8.4 Historical data and curves
The platform automatically stores device historical data, and users can:
Query historical data by day, week, month, or custom time period;
Display the historical trend of instantaneous flow rate, flow velocity, cumulative quantity and other parameters in the form of a curve graph;
Support multi parameter screen comparison and multi device data overlay display;
The data can be exported in Excel/CSV format for report creation and Data Analytics.
8.5 Alarm Management
The platform supports multiple alarm condition settings and push notifications:
| Alarm type | trigger condition | push method |
|---|---|---|
| Traffic over limit alarm | Instantaneous flow rate above/below the set threshold | Platform messages, APP push notifications, SMS |
| Offline device alarm | The device has not uploaded data beyond the set time | Platform messages, APP push notifications, SMS |
| Low battery alarm | The battery level is below the set threshold (such as 20%) | Platform messages, APP push notifications, SMS |
| Signal abnormality alarm | The Q value of ultrasonic signal intensity is lower than the set value | Platform messages, APP push notifications |
Table 9 Alarm Types and Push Methods
8.6 Centralized management of multiple devices
The platform supports hierarchical management of a large number of devices by project, region, and grouping, which can achieve:
Equipment grouping management, organizing equipment according to dimensions such as factory area, buildings, pipelines, etc;
Overview of equipment status, with a clear number of online/offline/alarm devices at a glance;
Batch parameter configuration and FOTA;
Multi level user permission management, supporting different roles such as administrators,O&Mpersonnel, visitors, etc;
Open API interface that can be integrated with third-party SCADA, EMS, smart water management and other systems.
9 Battery and Low Power Management
9.1 Battery specifications
The collection module has a built-in large capacityLithium thionyl chloride battery（ER34615，3.6V / 19Ah）， It has the characteristics of low self discharge rate, wide operating temperature range, and high energy density, making it suitable for long-term low-power applications. The battery is designed to be replaceable, and users can replace it with a battery of the same specification by themselves.
9.2 Low power operating mode
The collection module adopts an intelligent low-power management strategy, and the workflow is as follows:
Timed wake-up: Wake up from sleep mode according to the set collection interval (default 15 minutes);
Data Acquisition: After waking up, read the flow rate, flow velocity, cumulative amount and other data of the flowmeter host through RS485;
Data upload: Upload data to the cloud platform through 4G network;
Entering sleep mode: Immediately enter low-power sleep mode after uploading is completed, waiting for the next wake-up.
9.3 Range estimation
| Collection/upload interval | Estimated battery life (25 ℃) | Applicable scenarios |
|---|---|---|
| 1 minute | About 1-2 months | High frequency monitoring, short-term projects |
| 5 minutes | About 4-6 months | Routine monitoring |
| 15 minutes (default) | About 1-2 years | General traffic monitoring, recommended settings |
| 30 minutes | About 1.5-2.5 years | Low frequency monitoring |
| 1 hour | About 2-3 years | Long term trend monitoring |
Table 10 Estimated battery life (for reference only, actual battery life is affected by factors such as temperature and signal strength)
9.4 Electricity monitoring and replacement
The collection module Real-time monitors the battery voltage and uploads the power information to the platform. When the battery level drops below 20%, the platform triggers a low battery alarm to remind users to replace the battery in a timely manner. Steps for battery replacement:
Open the casing of the acquisition module (loosen the 4 fixing screws);
Remove the old battery and unplug the battery plug;
Insert the new battery plug, paying attention to the positive and negative poles;
Place the new battery into the battery compartment, cover the casing, and tighten the screws;
Confirm that the device is back online and the platform's battery level display has returned to normal.
Attention: Please recycle and dispose of used batteries according to local environmental regulations and do not dispose of them at will.
10 Maintenance and upkeep
10.1 Daily Inspection
Regularly check the online status and data of devices through the platform to ensure they are functioning properly;
Pay attention to the battery level and replace it promptly when the battery is low;
Check if the probe clamp is loose and if the signal line is damaged;
Check if the 4G antenna is intact and if the connection is secure.
10.2 Regular Maintenance
| maintenance project | maintenance cycle | Maintenance content |
|---|---|---|
| Probe inspection | Every 6 months | Check if the probe coupling agent has dried up and reapply if necessary; Check the tightness of the clamps |
| Signal quality inspection | Every 6 months | Check the Q value of the host, adjust the probe position or replace the coupling agent when it is below 60 |
| Battery replacement | Follow the platform reminder | Replace the battery when the battery level drops below 20% |
| Appearance cleaning | Every 12 months | Clean the host and collection module housing, check the waterproof seal |
| Wiring inspection | Every 12 months | Check all joints for looseness, water ingress, and aging or damage of signal wires |
Table 11 Regular Maintenance Schedule
10.3 Long term storage
When the device is not in use for a long time, please remove the battery and store the device in a dry, ventilated, and non corrosive gas environment with a storage temperature of -40 ℃~+80 ℃. When stored for more than 6 months, the battery level should be checked and charged or replaced.
11 Troubleshooting
| Fault symptom | Possible reasons | Processing method |
|---|---|---|
| No display on the host | The power supply is not connected; Battery depletion; Loose wiring | Check the battery and power supply line of the collection module; Replace the battery; Check the wiring |
| Low signal Q value or no signal | Improper installation position of the probe; Coupling agent drying up; Loose probe; Pipe/parameter setting error | Re select the installation location; Apply coupling agent again; Tighten the clamp; Verify pipeline parameter settings |
| Traffic display is zero or abnormal | The pipeline is not full; Fluid does not flow; Reverse probe connection; Installation distance error | Confirm the full pipe status; Confirm fluid flow; Check the UP/DN wiring; Recalculate installation distance |
| Offline device platform | 4G signal is poor; Antenna not connected; Battery depletion; SIM card arrears | Move to the advantage of good signal; Check the antenna connection; Replace the battery; Check SIM card tariff |
| Data not updated | The collection interval is set too long; The device is in sleep mode; communication failure | Check the collection/upload interval settings; Waiting for the next wake-up; Check 4G signal |
| Accumulated quantity inaccurate | Pipeline parameter setting error; There are non full tubes or bubbles present; Signal instability | Reset the outer diameter/wall thickness/material of the pipeline; Eliminate the influence of gases; Optimize probe installation |
| Short battery life | The collection/upload interval is too short; 4G signal difference leading to retransmission; low-temperature environment | Extend the collection and upload interval; Improve 4G signal; Pay attention to insulation in low temperature environments |
Table 12 Common Troubleshooting Table
If the above methods still cannot solve the problem, please contact Shanghai DAQ-IoT Network Technology Co., Ltd. for technical support.
12 Precautions
12.1 Safety precautions
Please ensure personal safety during installation and maintenance, and wear safety belts when working at heights;
When installing on high-temperature pipelines, be careful to prevent burns and wear protective gloves;
This device is a non explosion proof product and is strictly prohibited from being used in flammable and explosive environments;
It is strictly prohibited to plug and unplug probes and communication lines while they are live to avoid damaging the equipment;
Please pay attention to the positive and negative poles when replacing the battery, and do not short-circuit the battery.
12.2 Precautions for Installation and Use
It is necessary to ensure that the tested pipeline is full, and the measurement is invalid in a non full pipeline state;
Strictly ensure the length of the upstream and downstream straight pipe sections, otherwise it will affect the measurement accuracy;
The surface of the pipeline where the probe is installed must be clean, flat, and free of rust;
The coupling agent must be evenly applied to eliminate bubbles, otherwise the signal attenuation will be severe;
Horizontal pipeline probes should be installed on the side, not on the top or bottom;
4G antennas should be installed outdoors or in locations with less metal obstruction as much as possible;
After the device is powered on for the first time, please wait for 3-5 minutes for it to complete network registration and platform connection;
Do not disassemble the host and acquisition module by yourself, otherwise the warranty will be lost.
13 Packaging List
| serial number | name | Model | quantity | Remarks |
|---|---|---|---|---|
| 1 | Ultrasonic flowmeter host | DAQ-LP-UF4G Host | 1 unit | Blue aluminum alloy shell with LCD display |
| 2 | 4G battery powered acquisition module | DAQ-LP-GWRTU | 1 unit | Built in lithium battery, including 4G communication |
| 3 | External clip type ultrasonic probe | Standard external clamp type | 1 pair (2 pieces) | One UP/DN each, IP68 |
| 4 | Probe signal line | 5 meters | 2 pieces | With red and black markings, one UP/DN each |
| 5 | 4G suction cup antenna | 3-meter extension cord | 1 piece | |
| 6 | RS485 communication cable | 2-core shielded wire | 1 piece | Connection between host and acquisition module |
| 7 | Stainless steel hoop | Adapt to pipe diameter | 2 sets | Fixed probe |
| 8 | coupling agent | Ultrasonic coupling agent | 1 unit | |
| 9 | Instruction Manual | This manual | 1 copy | |
| 10 | Certificate of Conformity | / | 1 copy | |
| 11 | Warranty card | / | 1 copy |
Table 13 Standard Packaging List
Note: The above are standard configurations, and specific configurations are subject to the actual purchase contract. Optional accessories include: high temperature probe, extended signal cable, 4-20mA output module, wall bracket, etc.
14 Warranty and Service
14.1 Warranty Terms
Shanghai DAQ-IoTTechnology Co., Ltd. provides a 12-month free warranty service for this product from the date of purchase. During the warranty period, our company is responsible for free repair or replacement of any malfunctions caused by quality issues with the product itself.
The following situations are not covered by the free warranty:
Damage caused by human error, improper installation or use;
Damage caused by unauthorized disassembly or modification;
Damage caused by force majeure (such as lightning strikes, flooding, fires, etc.);
Normal consumption of vulnerable parts and consumables (such as batteries, coupling agents, etc.);
Products that have exceeded the warranty period.
14.2 Technical Support
Our company provides lifelong technical support services. If users encounter any problems during product installation, use, or maintenance, they can contact the technical support team through the following methods.
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