Ultrasonic Flowmeter Measures Dry And Wet Biogas

KROHNE’s OPTISONIC 7300 Biogas ultrasonic flowmeter is designed to measure dry and wet biogas with variable composition. The flowmeter provides additional functions like calculation of standard volume, methane content measurement, and diagnostics. It features no moving parts and no pressure loss.


OPTISONIC 7300’s signal transducers provide a stronger ultrasonic signal into the gas, and specialized signal processing enables better detection of small, strongly dampened acoustic signals. These features, along with the mechanical design of transducers and transducer pockets, make the measurement insensitive to liquid water and biological scaling.


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Other features include a maintenance-free full-bore flow sensor without any moving parts, lap joint flanges to lower its overall weight, measurement accuracy specified at 1% of actual measured flow rate, a built-in temperature sensor that facilitates direct measurement of methane content using calculation of the molar mass, in combination with the measured velocity of sound. and pulse outputs are available. HART and Modbus (optional) are included for field communication.


OPTISONIC 7300 Biogas is certified for use in explosive areas (zone 1). Since no pressure drop is generally allowed in biogas pipelines, the device is available in common line sizes of 2, 3, 4, 6, and 8 inches. For more specs and details, visit the OPTISONIC 73000 page, call 1-800-FLOWING (978-535-6060 in MA), and/or email [email protected]