Overview
The Viewshine U-GR3 Wireless Gas Meter is designed for closed installation, providing industrial grade accuracy within a measurement range of 0.016-10m ³/h in the smallest footprint, optimizing the requirements for installation space. The hardened steel shell adopts solid-state metering technology, which can immediately detect pressure abnormalities, leaks, or tampering events. After identifying the critical state, the integrated valve will automatically shut down the flow within 0.8 seconds and trigger real-time accident alarms through the Internet of Things platform (GPRS/LoRaWAN/4G protocol).
Main Features
1. Space adaptive design: can be deployed vertically in pipeline wells, narrow utility rooms, and renovation environments
2. Expand dynamic range: precise measurement from micro leak detection (0.016m ³/h) to high demand operations (10m ³/h)
3. Three layer security protocol:
Detection → Valve isolation → Real time notification
4. Military grade elasticity: CNC machined steel casing can withstand physical impact and environmental corrosion
5. Always connected intelligence: Multi network compatibility ensures uninterrupted data transmission in various infrastructure environments
General Description

Technical Parameters
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Type |
U-GR3 |
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Range and Capacities |
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Model |
G1.6 |
G2.5 |
G4 |
G6 |
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Qmin |
0.016 |
0.025 |
0.04 |
0.06 |
|
Qn |
1.6 |
2.5 |
4.0 |
6.0 |
|
Qmax |
2.5 |
4.0 |
6.0 |
10.0 |
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Electrical |
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Battery |
Two Li-batteries |
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Battery Life |
8-10 years |
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Battery Replaceable |
Communication Battery can be Replaced |
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Metrological |
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Accuracy |
±3% in range Qmin≤Q<0.1Qmax |
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±1.5% in range 0.1Qmax≤Q≤Qmax |
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Pressure Loss |
﹤200Pa |
﹤250Pa |
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Protection Class |
IP65 |
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Medium Temperature |
-25~55℃ |
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Storage Temperature |
-30~60℃ |
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Pressure Range |
≤15kpa |
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Body Material |
Steel |
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Nut Connection |
G1'' |
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Dimension |
236*97.4*95mm |
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Communication |
GPRS |
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Dimension

Why Choose Us
1. Professional knowledge in industry leadership and standard setting
As a pioneer in ultrasonic measurement technology, Viewshine has contributed to the development of China's national measurement standards, utilizing decades of professional experience to provide globally trusted solutions for customers.
2. Strict quality assurance
Our dedicated R&D and quality control teams implement strict quality protocols at every production stage to ensure that products consistently exceed industry benchmarks and meet your precise specifications.
3.360 ° Customer centered Support
We prioritize seamless user experience and have a responsive after-sales team that can quickly solve problems, from technical troubleshooting to operational guidance, ensuring uninterrupted service and long-term satisfaction.
4. High cost-effective direct manufacturing
As a factory distributor, we eliminate the markup of middlemen while maintaining cutting-edge innovation, providing unparalleled value without compromising performance or reliability.
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