Residential Ultrasonic Gas Meter
USM-G2.5/G4Gas Meter(G2.5/G4)

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-G2.5/G4 is widely applied for residential natural gas metering application.

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Features

Innovative ultrasonic gas flow sensor technology;
Built-in temperature 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.

Specifications

	CO2 Sensor CM1106-C
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]
Accuracy	Class 1.5
Error	Qmin≤Q<0.1Qmax: ±3%; 0.1Qmax≤Q≤Qmax:±1.5%
Battery	3.6V Lithium battery
Connector Type	Aluminum case: Screw thread, G1-1/4 Steel case: Screw thread, M30*2
Dimensions(mm)	210113.5149
Weight(kg)	1.1
Center Distance of Connectors (mm)	110
Working Pressure	0~20kPa / 0~2.90psi
Pressure Loss	200pa / 0.029psi or less
Working Temperature	-20℃~55℃ / -68℉~131℉
Storage Temperature	-30℃~70℃ / -86℉~158℉
Protection Class	Aluminum case: IP54 Steel case: IP65