Ultrasonic flow meters offer a number of advantages over other flow measuring technologies. The most distinct of these advantages is the non-invasive nature of ultrasonic measuring technique: fluid flow can be measured by clamping a pair of transducers onto the outside of the pipe without contacting the measured fluid.

This installation method, unique among flow metering technologies, allows ultrasonic flow meters to be used in applications where the process cannot be shut down and/or the pipe cannot be cut for installation. Clamp on flow meters also cause no pressure drop, suffer no mechanical wear and tear, allow for bidirectional measurement, and provide the ability to pass unlimited solids past the meter without damage.

Fluid velocity is measured by sending an ultrasonic pulse from an upstream transducer to a downstream transducer and back again. The measured difference in the amount of time that each pulse takes to traverse the pipe is directly proportional to the mean fluid velocity. SmartMeasurement’s ultrasonic flowmeters use this measured velocity to calculate the liquid flow rate based on user-entered information about the process application.

For a more detailed discussion of our ultrasonic flowmeter’s principles of operation, please visit our Ultrasonic Measuring Principle page.


SmartMeasurement’s Ultrasonic Flow Meters

These instruments can be used in a variety of applications in industries ranging from oil & gas and municipal/wastewater to building automation and factory automation to solar and semicon.

Request a quote on ultrasonic flow meters for your application, or contact SmartMeasurement to learn more.

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Alsonic Family		Liquids	Transducer Styles			Temperature	Comparison
Technology	Model	Limitations	Clamp-on	Inline	Insertion	Range	Feature
Graphic Permanent Ultrasonic Meter	Alsonic DSP	< 30% particles or bubbles	20~6000mm	25-100mm	100-3000mm	(0.02-12mps) (-40 to +120℃)	High technology, any liquids
Graphic Portable Ultrasonic Meter	Alsonic DSPPL	< 30% particles or bubbles	20~6000mm	Not available	Not available	(0.02-12mps) (-40 to +120℃)	High technology, any liquids
Open Channel Ultrasonic Meter	Alsonic AVM	< 30% particles or bubbles	20~6000mm	Not available	unlimited	(0.02-12mps) (-40 to +120℃)	High technology, any liquids
Handheld Ultrasonic Meters	Alsonic HL & DHL	< 2% particles or bubbles	15~6000mm	Not available	Not available	(0.1 ~ +/- 12 m/s) (-40 to +160℃)	Low technology, clean liquids, data logger (2G SD card with DHL)
Economical Permanent Ultrasonic Meter	Alsonic FX	< 2% particles or bubbles	15~6000mm	15~2000mm	100-3000mm	(0.1 ~ +/- 12 m/s) (-40 to +160℃)	Low technology, clean liquids
Thermal Energy Ultrasonic Meter	Alsonic EG	< 2% particles or bubbles	15~6000mm	15~2000mm	100-3000mm	(0.1 ~ +/- 12 m/s) (-40 to +160℃)	Low technology, clean liquids
Inline Thermal Energy Ultrasonic Meter	Alsonic BAEG	< 2% particles or bubbles		15~40mm	15~300mm	(0.1 ~ +/- 10 m/s) (-40 to +90℃)	Low technology, clean liquids