Overview

The U-GR3 is a vertical ultrasonic gas meter designed for installation in tight spaces. Despite its compact size, it delivers a wide measuring range of 0.016 to 10 m³/h with high accuracy and long-term data storage.
When gas leakage, pressure fluctuation, or tampering is detected, the IoT-enabled meter automatically closes the built-in shut-off valve and sends real-time alerts via the IoT platform. Safe, smart, and space-saving.
Main Features
1. Built-in shut-off valve for automated safety response
2. Meter removal platform for easy maintenance
3. Gas leak monitoring with instant alerts
4. Wide measuring range (0.016–10 m³/h)
5. High accuracy with temperature & pressure compensation
6. Long-term data storage for usage tracking

Technical Parameters
|
Parameters |
Unit |
G1.6 |
G2.5 |
G4.0 |
G6.0 |
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|
Maximum Flowrate (Qmax) |
m³/h |
2.5 |
4.0 |
6.0 |
10.0 |
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|
Minimum Flowrate (Qmin) |
m³/h |
0.016 |
0.025 |
0.040 |
0.060 |
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|
Start Flowrate (Qstart) |
m³/h |
0.003 |
0.004 |
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|
MPE |
Qmin ≤ Q < 0.1 Qmax |
% |
± 3.0 |
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|
0.1 Qmax ≤ Q ≤ Qmax |
± 1.5 |
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|
Maximum Working Pressure (Pmax) |
kPa |
15 |
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|
Maximum Pressure Absorption |
Pa |
≤200 |
≤250 |
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|
Gas Temperature Range (tg) |
℃ |
-25 to +55 |
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|
Storage Temperature |
℃ |
-30 to +60 |
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|
Humidity |
% |
≤95 |
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|
Battery Information |
V |
Measurement: 3.6 V lithium battery |
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|
Thread |
Inch |
G3/4", G1" |
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|
Protection Grade |
/ |
IP65 |
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|
Overall Dimensions |
mm |
252 * 100 * 98 |
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|
Medium |
/ |
NG |
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|
Mechanical Environment |
/ |
M1 |
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|
Electronic Environment |
/ |
E2 |
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|
Communication |
/ |
GPRS / LoRaWAN / 4G |
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|
Case Material |
/ |
Steel |
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Dimension

Why Choose Us
1. Fully Equipped Production Facilities: Our production facilities are modern and equipped with state-of-the-art machinery. This enables us to manufacture products with high precision and efficiency.
2. Full Certification: We have obtained all the necessary certifications and compliance requirements for our products. Such as: MID Certification, ATEX Certification, Quality, Environmental, Occupational Health and Safety, Intellectual Property management system certification, and so on.
3. OEM and ODM: We offer OEM and ODM options. This flexibility allows us to meet specific customer requirements and deliver tailored solutions.
4. High Quality: We select the best quality raw materials to produce our products, from incoming raw materials to finished products,our quality inspection ensures that each stage meets the highest standards of quality.
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