more about non-intrusive flowmeters
raffinerie flow meters 
FLEXIM's WaveInjector is engineered for flow measurement at high temperatures- together with the FLUXUS ADM flowmeter, it is the ideal solution for refinery applications
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FLEXIM's WaveInjector®.
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Heat transfer oil
Coker /
visbreaker feed
Bitumen at an
oil sand facility
Overflash
mass flow
Heavy
gasoil
Bitumen
at 700°F
Hot pitch during distillation
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WaveInjector®
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Non-intrusive flow measurement
at extreme temperatures

Ultrasonic flow measurement at high temperatures was until now a troublesome business: The gels or pads used for acoustic coupling between the transducers and the pipe have a limited temperature tolerance. Furthermore, high temperatures accelerate the aging of the ultrasonic transducer's piezo elements and thus limit their useful operating life.

FLEXIM's newly patented WaveInjector® overcomes these limitations.

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The patented transducer mounting fixture realizes a long-term stable clamp-on ultrasonic flow measurement with standard temperature transducers at temperatures as high as 750 °F. It offers all the advantages of the clamp-on ultrasonic technology, a non-intrusive measurement, and a wide dynamic range with a high flexibility.

The WaveInjector® is available in various sizes, each of which covers a wide nominal pipe diameter range. For big pipes; special mounting chains ensure a firm attachment to the pipe, thus assuring high pressure on the coupling point.

Since the WaveInjector® is a purely mechanical device, it can be used in explosion hazard areas without any further certifications.

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The WaveInjector® is composed of the WaveInjector® coupling plate (1),
the transducers clamping fixtures(2),
a pipe mounting clamp (3), together with anacoustic coupling foil.
The metallic coupling plate between the transducer (4) and the pipe provides nearly loss-free ultrasonic coupling.
At the same time, its cooling effect maintains a high temperature gradient between the surface of the pipe and the coupling surface of the transducer. This guarantees that the maximum permissible transducer temperature is never exceeded.
The robust pipe mounting assembly (3) ensures a high surface pressure between the coupling plates and the pipe wall. Special metallic foils guarantee an optimal long term stable acoustic coupling.