Overview
Viewshine U-GR4 Nb-Iot Gas Meter represents the next generation of all-electronic ultrasonic gas metering, leveraging time-difference technology to measure gas volume with exceptional precision. By analyzing the variance in ultrasonic wave transit times through the medium, this meter delivers high-reliability measurements, complemented by advanced temperature and pressure compensation that adapts to fluctuating operational conditions. Its design prioritizes intelligence and flexibility, supporting multiple smart application modules for remote data monitoring, detailed analytics, and automated billing-enabling seamless integration into smart energy ecosystems.
Engineered for longevity, the U-GR4 features a non-moving-part structure and full electronic measurement, eliminating mechanical wear and ensuring stable performance over its extended lifespan. The integrated IoT connectivity and shutoff valve enhance operational control, while the wide measuring range (0.016m³/h to 6m³/h) caters to diverse residential and commercial needs. With temperature compensation and robust construction, this meter redefines accuracy in gas consumption monitoring, making it an essential tool for modern, efficient energy management.
Main Features
Compact size
Breaking through the traditional impression of bulky instruments, the product achieves the ultimate optimization of space occupation with its exquisite and compact body design. Whether it is inside narrow industrial equipment or limited installation environments in households, it can be flexibly adapted and easily embedded in various complex scenarios. Through innovative structural design and precise component layout, the volume is compressed to 30% of similar products while ensuring functional integrity. This not only facilitates transportation and installation, but also saves valuable space for system integration, truly achieving "small body, large energy".
Reliable stability
In terms of reliability and stability, the product has built an unbreakable quality defense line. Its core components are made of military grade durable materials, which have undergone rigorous tests such as high and low temperature, humidity cycling, and vibration impact. They can operate stably in extreme temperature environments ranging from -30 ℃ to 60 ℃, high humidity, and strong vibration conditions, with an annual failure rate of less than 0.1%. The internal circuit system is equipped with multiple redundancy protection mechanisms, which can automatically save data and quickly restore work even in the event of unexpected power outages, voltage fluctuations, and other emergencies, providing a solid guarantee for continuous and stable operation.
Remote management
Relying on advanced IoT technology, the product breaks through spatial limitations and achieves comprehensive remote management. Users can view real-time device operation status, historical data, fault information, etc. through a dedicated management platform or mobile terminal. Whether it is an energy station thousands of miles away or a widely distributed commercial network, administrators can remotely configure equipment parameters, upgrade software, diagnose and repair faults, greatly reducing operation and maintenance costs and response time, and achieving a qualitative leap in management efficiency.
Accurate measurement
Measurement accuracy is one of the core advantages of the product, which adopts cutting-edge sensing technology and intelligent algorithms. High precision sensors can capture subtle changes, and with the help of an error automatic calibration system, the measurement error is controlled within ± 0.5% over the full range, far exceeding industry standards. Based on the characteristics of different media, the built-in adaptive compensation model can optimize measurement parameters in real time, ensuring accurate and reliable data output even under complex working conditions, providing a solid basis for measurement settlement and cost control.
Strong anti-interference ability
Faced with the complex and ever-changing electromagnetic environment, the product has created a powerful anti-interference shield. Its shell is made of special shielding materials, combined with multi-layer filtering circuit design, which can effectively resist strong electromagnetic interference from industrial equipment, communication base stations, etc., and also has lightning protection and surge protection functions. Even in harsh environments with high electromagnetic interference, it can maintain the accuracy of measurement data and the stability of system operation, ensuring the normal operation of equipment in various scenarios.
EN14236:2018 &OIML R137 & WELMEC 7.2
The product strictly follows international authoritative standards for research and development and production, and has passed multiple certifications such as EN14236:2018 (European Gas Meter Standard), OIML R137 (International Organization for Legal Metrology Gas Meter Certification), and WELMEC 7.2 (European Union Measurement Instrument Directive Technical Guidelines). From product design, manufacturing process to performance testing, every link is strictly controlled and verified to ensure that product quality, measurement accuracy, safety and other indicators reach the international leading level, providing users with reliable quality assurance.
Technical Parameters
|
Type |
GR |
|||
|
Parameters |
Unit |
G1.6 |
G2.5 |
G4 |
|
Nominal Measured Flow Qnom |
m³/h |
1.6 |
2.5 |
1.6/2.5/4.0 |
|
Maximum Measured Flow Qmax |
m³/h |
2.5 |
4 |
6.0 |
|
MinimumMeasured Flow Qmin |
m³/h |
0.016 |
0.025 |
0.040 |
|
Lowest Flow Rate Qstart |
m³/h |
0.004 |
||
|
Error - Qmin ≤ Q < 0,1Qmax - 0,1Qmax ≤ Q ≤ Qmax |
% |
± 3.0 ± 1.5 |
||
|
Transitional Flow Rate Qt |
m³/h |
0.1Qmax |
||
|
Maximum Working Pressure Pmax |
kPa |
50 |
||
|
Pressure Loss at Qmax |
Pa |
≤200 |
||
|
Counter Capacity |
m³ |
999999,999 |
||
|
Minimum Counting Division |
m³ |
0,0001 |
||
|
Ambient Temperature tm |
°С |
-25 to +55 |
||
|
Storage Temperature |
°С |
-30 to 70 |
||
|
Humidity |
% |
≤95% |
||
|
Power Supply |
|
Li battery |
||
|
In- and Outlet Pipe Screw |
Inch |
G11/4 (ISO228) |
||
|
Distance Between Inlet and Outlet |
mm |
110 |
||
|
Protection Level |
Class |
IP66 |
||
|
Mass, Not More Than |
kg |
2.5 |
||
|
Overall Dimensions |
mm |
220*102*152 |
||
|
Medium |
|
NG |
||
|
Mechanical Environment |
Class |
M1 |
||
|
Electronical Environment |
Class |
E2 |
||
|
Design Lifetime |
Year |
15 |
||
|
Metrological Battery Lifetime |
Year |
10 |
||
|
Communication |
|
Nb-IoT / GPRS /... |
||
|
Material of Meter Body |
|
Die-casting Aluminum |
||
|
Material of Case |
|
PVC |
||
|
Material of Valve |
|
POM |
||
Dimension

Why Choose Us
1.Cutting-Edge Production for Unmatched Quality
We are equipped with cutting-edge production facilities, utilizing advanced mechanical equipment and cutting-edge technology to create intelligent and refined production processes. This not only greatly improves production efficiency, but also ensures that every product has excellent quality, laying a solid foundation for your business development with high-precision and high-performance products.
2. Authoritative certification, quality endorsement
Multiple heavyweight certifications are the best proof of our strength. MID certification ensures accurate and reliable product measurement, ATEX certification ensures safe operation of equipment in hazardous environments, and various management system certifications demonstrate our standardized and efficient operational management. These certifications represent our strict adherence to international standards and regulations. Choosing us means choosing trustworthy quality.
3. Flexible customization to meet individual needs
With strong OEM and ODM capabilities, we can deeply meet your personalized needs. Whether it's brand identity customization, exterior design optimization, or functional feature adjustment, we can tailor exclusive solutions for you to help you stand out in the market and achieve differentiated competition.
4. Strive for excellence and strictly control quality
Quality is the lifeline of our production. From strict selection of high-quality materials in the raw material procurement process to the implementation of strict quality inspection procedures throughout the production process, no detail is overlooked. Through multiple inspection checkpoints, we ensure that every product delivered meets the highest standards, eliminating any worries for you.
5. Thoughtful service, worry free throughout the entire process
We prioritize customer satisfaction and our professional service team is always on standby. Whether it's product consultation, technical support, or after-sales problem handling, we can respond quickly and efficiently. Your needs are our guide to action, with thoughtful service to accompany you on your journey with peace of mind.
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