Gas Flow Meters
USM Series
Ultrasonic Gas Meter USM Series (G2.5-G65)
- Model
- USM Series
- Category
- Flow, Pressure & Process Instruments › Gas Flow Meters
Parameters: Cumulative volume, Instant flow, Temperature
IndustriesEnergy & Biogas
Measurement PrincipleUltrasonic
Overview
The USM Series (G2.5-G65) are smart ultrasonic gas meters using time-of-flight measurement with temperature and pressure (≥G6) compensation. Optional GPRS or NB-IoT enables remote reading and top-up, and a built-in shut-off valve cuts supply on leaks; they are OIML R137 and MID compliant for residential, commercial and industrial metering.
Key Features
- PCT patent for ultrasonic gas flow meter module
- Built-in temperature and pressure (≥G6) compensation
- Class 1.5 accuracy with intelligent software algorithm for air, 100% CH4, H1 and different natural gases
- Anti-contamination, long-term stability of accuracy
- Digital display for cumulative gas volume, instant flow rate, temperature, work mode, etc.
- Built-in shut-off valve for stopping gas supply in case of error conditions
- No moving part, no mechanical wear that leads to degradation of accuracy, no maintenance cost;
- No magnetic induction elements, free from magnetic field effect
- Small size, light weight, easy installation
- Compliant to OIML R137 and MID
- GPRS and NB-IoT optional
Measured Parameters
| Parameter | Measuring Range |
|---|---|
| Cumulative volume | To be confirmed |
| Instant flow | To be confirmed |
| Temperature | To be confirmed |
Specifications
| Model | USM-G2.5/G4 | USM-G6/G10/G16 | USM-G25/G40/G65 |
|---|---|
| Measurement Range | USM-G2.5: 0.025~4 m3/h[0.88~ 141.26 ft3/h] / USM-G4: 0.04~6 m3/h [1.41~ 211.88 ft3/h] | USM-G6: 0.06~10 m3/h [2.12~353.14ft3/h] / USM-G10: 0.1~16 m3/h [3.53~565.02 ft3/h] / USM-G16: 0.16~25 m3/h [5.65~882.85 ft3/h] | USM-G25: 0.25~40 m3/h [8.83~1412.6 ft3/h] / USM-G40: 0.4~65 m3/h [14.13~2295.41 ft3/h] / USM-G65: 0.65~100 m3/h [22.95~3531.4 ft3/h] |
| Accuracy | Class 1.5 |
| Error | Qmin≤Q<0.1Qmax: ±3%; 0.1Qmax≤Q≤Qmax:±1.5% |
| Battery | 3.6V Lithium battery |
| Connector Type | Screw thread, G1-1/4 or M30*2 | Screw thread, G1-1/2 | USM-G25: Screw thread, G2 / USM-G40: Screw thread, G2-1/2 / USM-G65: Screw thread, G2-1/2 |
| Dimensions | 210*113.5*149mm | 246*204*110.5mm | 330*248*167mm |
| Weight | 1.1kg | 2.3kg | 4.0kg |
| Center Distance of Connectors | 110mm | 150mm | 180mm |
| Working Pressure | 0~20kPa / 0~2.90psi | 0~50kPa / 0~7.25psi | Normal pressure:0-50kPa/0-7.25psi / Higher pressure:0~250kPa/0~36.26psi |
| Working Temperature | -20℃~55℃ / -68℉~131℉ |
| Storage Temperature | -30℃~70℃ / -86℉~158℉ |
| Protection Class | Aluminum case: IP54 / Steel case: IP65 | IP65 |
Applications
- Residential natural gas metering
- Commercial gas metering
- Industrial gas metering
- Remote reading and prepaid top-up
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