smart thermal gas meter
●gas flow metering in standard condition ensure high precise, no temperature or pressure compensation
●automatic gas identification technology to meet metering requirements of various of gas specified in 12t / 10t
●without movement parts or mechanical wear, ensures long-term metering stability, thus minishing the data difference between supply and consumption
●strong anti-interference capacity (no magnetic component)
●small flow leakage protection guarantees the safety using
●convenient installation as with compact design and small size
●independent measurement unit, high level data security protection and tracking mechanism
●seven key technologies and four patents
●multiple communication modes(gprs / nb-iot / lorawan / wm-bus) support remote communication and valve operation
●build in lithium battery with 10 years life and 1 year external alkaline battery
principle
microelectronic thermal sensor applied as the gas flow detection element of the smart thermal gas meter. as shown in the figure, the sensor includes a micro-heater and a pair of symmetrical temperature sensors. when there is no gas flow, the two sensors are at the same temperature field, while there is any flow passby, the change of the temperature will be detected by the sensors. the temperature field has a corresponding relationship to the gas flow.
certificate
nmi certin b.v., certificate (netherlands national institute of metrology); oiml r137 certificate
technical parameter
dimension
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