1. Highlights
- Innovative Design for Enhanced Performance: Unlike traditional gas meters that often feature a square design, the U-GR3 gas meter boasts a straight-through design. This unique configuration significantly minimizes gas loss during measurement, thereby substantially boosting the precision of the readings. The streamlined design ensures that gas flows through the meter with minimal resistance and turbulence, leading to more accurate and reliable measurements.
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High Measurement Accuracy and Stability:The U-GR3 features a highly sensitive ultrasonic sensor that maintains a high level of accuracy even at low flow rates. This ensures precise measurement of gas usage, which is crucial in a kitchen environment where gas appliances may operate at varying flow rates.The meter has an extended measuring range of 0.016 to 10 m³/h, accommodating a wide range of gas flow rates, making it suitable for both small and large kitchen appliances.
- Space-Efficient and Versatile Installation: The U-GR3 is designed to be compact, taking up only 1/3 the size and 1/4 the weight of traditional diaphragm meters. This makes it ideal for installation in narrow spaces, such as kitchens where space is often limited.Its small size and lightweight construction allow for easy installation in various locations, including small kitchens and areas with multiple pipe connections.
- Advanced Communication Capabilities: The U-GR3 gas meter is equipped with state-of-the-art communication technology. It supports multiple communication protocols, including GPRS and LoRaWAN. This dual-communication support allows for seamless data transmission to remote monitoring systems or central management platforms. Whether in urban environments with reliable GPRS coverage or in more remote areas where LoRaWAN's long-range, low-power capabilities are advantageous, the U-GR3 ensures that gas usage data can be reliably sent and received. This facilitates real-time monitoring, efficient data management, and timely responses to any anomalies in gas consumption patterns.
- Internal Shut-off Valve:The U-GR3 is equipped with an internal shut-off valve, which allows for convenient control of the gas supply. This feature enhances safety and management, particularly in a kitchen setting where gas usage needs to be controlled and monitored closely.
- User-Friendly Interface:The U-GR3 is equipped with an LCD display, providing clear and easy-to-read information for users and service providers. This makes it easy to monitor gas usage and manage the meter.
2. Dimensions


| Parameters | Unit | G1.6 | G2.5 | G4.0 | G6.0 |
| Nominal Measured Flow Qnom | m³/h | 1.6 | 2.5 | 4.0 | 6.0 |
| Maximum Measured Flow Qmax | m³/h | 2.5 | 4.0 | 6.0 | 10.0 |
| MinimumMeasured Flow Qmin | m³/h | 0.016 | 0.025 | 0.040 | 0.060 |
| Lowest Flow Rate Qstart | m³/h | 0.004 | |||
| Error -Qmin≤Q<0,1Qmax -0,1Qmax≤Q≤Qmax |
% | ±3.0 ±1.5 |
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Maximum Working Pressure Pmax |
kPa | 15 | |||
| Pressure Loss at Qmax | Pa | ≤200 | ≤250 | ||
| Ambient Temperature tm | ℃ | -25 to+55 | |||
| Storage Temperature | ℃ | -30 to 60 | |||
| Power Supply | Li Battery | 10 Years Design Life 10 Years Metrological Battery |
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| In-and Outlet Pipe Screw | Inch | G3/4",G1" | |||
| Humidity | % | ≤95% | |||
| Protection Level | Class | IP65 | |||
| Overall Dimensions | mm | 236*97.4*95 | |||
| Medium | NG | ||||
| Mechanical Environment | Class | M1 | |||
| Electronical Environment | Class | E2 | |||
| Communication | GPRS/LoRaWAN | ||||
| Material of Meter Body | Steel | ||||
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