Overview
The Viewshine Gas Smart Metre integrates the needs of commercial and industrial scenarios. The U-GR4 model is designed for precise metering, with an extended range covering 0.016-6m ³/h. It integrates IoT communication modules and intelligent shut-off valves to achieve real-time shut-off of abnormal gas usage. The entire series adopts a non moving parts architecture to eliminate the risk of mechanical wear, combined with anti-interference reinforcement design to ensure long-term stable operation. Realize fully electronic and precise measurement based on non-contact ultrasonic metrology technology. The gas meter maintains an accuracy of ± 0.7% under complex working conditions through dynamic temperature/pressure compensation algorithms. Its intelligent application module integration capability supports remote data monitoring, gas consumption mode analysis, and automatic billing, and is suitable for high-frequency energy consumption scenarios such as commercial kitchens and hotels.
Main Features
1. Compliance certification: Complies with EN14236:2018, OIML R137, and WELMEC 7.2 international standards
2. Intelligent management: supports multi protocol communication (LoRaWAN/M-Bus), real-time transmission of temperature/pressure data
3. Security protection: The intelligent alarm system responds promptly to abnormal traffic and equipment failures
4. Engineering adaptation: Compact structural design, wide range ratio to meet diverse installation environment requirements
5. Adopting non-contact ultrasonic time difference method, covering a dynamic measurement range of 0.016-6m ³/h
6. Built in LoRaWAN/NB IoT dual-mode communication module, supporting remote meter reading, gas usage mode analysis, and abnormal alarm
7. There are no moving parts, which avoids the gear wear and lubrication aging problems of traditional instruments. Can maintain measurement stability in an environment of -30 ℃ to+60 ℃, ensuring maintenance free operation for more than 10 years.
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. High quality raw material selection
The Viewshine U-GR4 gas meter adopts industry-leading ultrasonic sensors and high-precision electronic components. The core components have undergone rigorous durability testing to ensure material corrosion resistance, anti-interference, and long service life. The fully electronic measurement design abandons traditional mechanical components, eliminates wear issues, and is equipped with aviation grade alloys and sealing materials to adapt to extreme temperature and humidity environments, ensuring long-term stable operation.
2. High standard production requirements
The product strictly follows the international standards EN14236:2018, OIML R137, and WELMEC 7.2. The production process follows the Six Sigma management system, and each process is precisely calibrated. The unique temperature and pressure compensation technology has undergone thousands of simulated tests, with an error rate of less than 0.5% and a range width of 375:1 (0.016-6m ³/h), meeting the stringent requirements of commercial scenarios in different regions around the world.
3. High quality service system
The intelligent IoT module supports remote configuration, OTA upgrade, and big data analysis, and a dedicated energy management team provides 7 × 24-hour cloud monitoring services. Customized API interface seamlessly integrates with enterprise ERP systems, and the intelligent alarm system pushes three-level warnings (SMS/email/platform) within 15 minutes after triggering, and synchronously generates fault diagnosis reports. In abnormal states, the integrated shut-off valve can automatically shut off the gas source within 0.8 seconds.
4. High speed global logistics network
Standard orders can be quickly shipped out within 48 hours, and DHL/UPS strategic cooperation channels ensure 72 hour delivery to 120 countries.
5. After sales response mechanism
The after-sales team provides a 5-minute emergency response commitment, with 80% of remote issues resolved within 1 hour, and on-site support covering prefecture level cities across the country within 48 hours.
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