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Commercial Ultrasonic Gas Meter
USM-G25/G40/G65Gas Meter(G25/G40/G65)

USM Series Ultrasonic Gas Flow Meter is a type of electronic meter that adopts TOF (Time of Speed) principle to measure flow velocity of gas medium, with class 1.5 accuracy and high stability, USM-G25/G40/G65 is widely applied for commercial natural gas metering application.

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  • Innovative ultrasonic gas flow sensor technology;
  • Built-in temperature and pressure compensation;
  • High measurement sensitivity and accuracy with intelligent software algorithm for air,100%   CH4, H1 and different natural gases;
  • Long-term stability of accuracy;
  • Anti-contamination, high corrosion resistance;
  • Low pressure loss due to absence of obstructing objects within flow path;
  • No magnetic induction elements, free from magnetic field effect;
  • Low power consumption, long lifespan;
  • Low operation & maintenance cost;
  • Compact size, light weight, easy installation;
  • Compliant to OIML R137 and EN14236 class 1.5;
  • GPRS and NB-IoT solutions are optional.


CO2 Sensor CM1106-C
Measurement Range 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%;
Battery 3.6V Lithium battery
Connector Type USM-G25: Screw thread, G2
USM-G40: Screw thread, G2-1/2
USM-G65: Screw thread, G2-1/2
Dimensions(mm) 330*248*167
Weight(kg) 4.0
Center Distance of Connectors (mm) 180
Working Pressure Normal pressure:0-50kPa/0-7.25psi
Higher pressure:0~250kPa/0~36.26psi
Pressure Loss USM-G25: 375Pa / 0.054psi or less
USM-G10: 300Pa / 0.043psi or less (without valve)
USM-G16: 400Pa / 0.058psi or less (without valve)
Working Temperature -20℃~55℃ / -68℉~131℉
Storage Temperature -30℃~70℃ / -86℉~158℉
Protection Class IP65
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