Overview

ViewShine's U-GR4 is a high-precision ultrasonic gas meter with IoT connectivity and on integrated shutoff valve. It features an extended measuring range from 0.016 m³/h to 6 m³/h, non-moving parts, and full electronic measurement, making it an advanced choice for residential and commercial monitoring as a reliable ultrasonic natural gas flow meter.
Its real-time environmental compensation ensures consistent performance under extreme temperature and pressure variations. The wear-free electronic architecture also reduces maintenance costs.
As an ideal residential gas meter, it enables cloud monitoring, predictive analytics, and remote safety control, reducing operational costs for automated utility management.
Main Features
1. Extremely compact design
30% reduction in volume compared to industry standards, leading the industry
Innovative structural optimization to easily cope with narrow spaces
Embedded installation, suitable for complex scenarios
2. Military grade reliability
Stable operation within a wide temperature range (-30 ℃~60 ℃)
Annual failure rate below 0.1%, ensuring durability as a core component in any natural gas meter network
3. Intelligent remote operation and maintenance
Multi platform collaborative control of the Internet of Things
Real time monitoring/remote maintenance/intelligent diagnosis
Measurement accuracy reaches ± 0.5%
4. Advanced calibration technology
Full range accuracy ± 0.5%
Adaptive compensation for dynamic media
5. Excellent anti-interference performance
Professional level electromagnetic shielding design
Lightning and dust protection design
Data distortion free under strong electromagnetic interference
6. Global Certification System
EN14236 & OIML R137 & WELMEC 7.2 authoritative certification
International full process quality management ensures every smart home gas meter meets the highest standards
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 60 |
||
|
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 |
IP65 |
||
|
Mass, Not More Than |
kg |
2.5 |
||
|
Overall Dimensions |
mm |
207*113*142 |
||
|
Medium |
|
NG |
||
|
Mechanical Environment |
Class |
M1 |
||
|
Electronical Environment |
Class |
E2 |
||
|
Design Lifetime |
Year |
15 |
||
|
Metrological Battery Lifetime |
Year |
10 |
||
|
Communication |
|
Nb-IoT / GPRS /4G/LoRaWAN |
||
|
Material of Meter Body |
|
Die-casting Aluminum |
||
|
Material of Case |
|
PVC |
||
|
Material of Valve |
|
POM |
||
Dimension

Why Choose Us
1. Extensive Industry Expertise
Viewshine stands out as a prominent player in the field of ultrasonic measurement, with a deep understanding of industry dynamics and trends. Our wealth of experience enables us to provide innovative solutions tailored to your needs.
2. Skilled Professionals
Our team consists of highly skilled experts in research and development (R&D) and quality control (QC). With their expertise and dedication, we ensure rigorous product quality control, surpassing your specific requirements and expectations.
3. Exceptional Customer Care
We prioritize customer satisfaction and strive to provide exceptional support throughout your journey with us. Our dedicated support team is readily available to address any inquiries or concerns, ensuring a smooth and positive post-purchase experience.
4. Competitive Pricing
As a direct manufacturing factory, we are able to offer competitive pricing without compromising on quality. Our streamlined production processes and efficient operations allow us to provide cost-effective solutions that align with your budgetary needs. We believe in delivering value without compromise.
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