Overview
VIEWSHINE U-GR4 is a smart ultrasonic gas meter engineered for residential and light commercial applications. It delivers precise measurement across a 0.016–6 m³/h flow range, with real‑time temperature and pressure compensation ensuring consistent accuracy under variable conditions. The fully electronic design eliminates mechanical wear, providing reliable performance with minimal upkeep.
Integrated with an automatic shut‑off valve and IoT connectivity, the U-GR4 supports remote monitoring, safety control, and data-driven predictive management. Communication options include GPRS, 4G, NB‑IoT, and LoRaWAN, while compliance with EN14236, OIML R137, and WELMEC 7.2 guarantees international standards alignment. Built with IP65‑rated steel housing and a 12‑year design life, it is ready for smart home and utility applications.
Main Features
1. Compact size
2. Reliable stability
3. Remote management
4. Accurate measurement
5. Intelligent alarm system
6. Wide measuring range ratio
7. Strong anti-interference ability
8. Multiple communication modes
9. Real-time temperature & pressure compensation
Technical Parameters
|
Parameters |
Unit |
G1.6 |
G2.5 |
G4 |
G4.0+ |
|
|
Maximum Flowrate (Qmax) |
m³/h |
2.5 |
4 |
6 |
6 |
|
|
Minimum Flowrate (Qmin) |
m³/h |
0.016 |
0.025 |
0.040 |
0.016 |
|
|
Start Flowrate (Qstart) |
m³/h |
0.003 |
0.004 |
|||
|
MPE |
Qmin≤Q<0.1Qmax |
% |
±3.0 |
|||
|
0.1Qmax≤Q≤Qmax |
±1.5 |
|||||
|
Maximum Working Pressure (Pmax) |
kPa |
≤50 |
||||
|
Maximum Pressure Absorption |
Pa |
≤200 |
||||
|
Gas Temperature Range (tg) |
℃ |
-25 to +55 |
||||
|
Storage Temperature |
℃ |
-30 to +60 |
||||
|
Humidity |
% |
≤95 |
||||
|
Battery Information |
V |
Measurement: 3.6V lithium battery |
||||
|
Thread |
Inch |
G1¼" |
||||
|
Connection Centers |
mm |
110 |
||||
|
Protection Grade |
Class |
IP65 |
||||
|
Overall Dimensions |
mm |
207*113*142 |
||||
|
Medium |
mm |
NG |
||||
|
Mechanical Environment |
Class |
M1 |
||||
|
Electronical Environment |
Class |
E2 |
||||
|
Communication |
/ |
GPRS/4G/NB-IoT/LoRaWAN |
||||
|
Case Material |
/ |
Steel |
||||
Dimension
Why Choose Us
1. Global Operations, Local Compliance
VIEWSHINE serves utility operators, industrial plants, and commercial enterprises in over 30 countries with ultrasonic gas meters, smart water meters, and IoT‑enabled platforms. We provide OEM and private‑label capabilities, adjusting product specifications to align with local regulatory frameworks and brand guidelines - ensuring smooth deployment across diverse markets.
2. Built on Engineering Excellence
All meters are conceived, validated, and produced within our own facilities, carrying certifications to MID, OIML, and CE requirements. We enforce uniform quality across all production batches, maintain end‑to‑end component traceability, and leverage extensive field performance records to guarantee dependable operation from the first day of service.
3. Partnership‑Based Project Execution
We collaborate with distributors, system integrators, and utility operators throughout the project lifecycle - from technical specification and prototype refinement to logistics coordination and final delivery. Our approach is built around your schedule, not ours.
4. Straightforward Pricing, Dependable Quality
As an ISO‑certified manufacturer, we maintain a direct, volume‑based pricing model with no intermediary markups. No hidden surcharges - only transparent, competitive quotations supported by consistent, auditable quality.
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