Transonic Research Blood Flow Meters

NOTE: T106 and 206 Flowmeters have been phased-out! The replacement is the new 400 series flowmeters.

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The Transonic T106 Single Channel Transit-Time Flowmeter.
Flow probes are still available for the T106 and T206 Blood Flow Meters.  Please contact us for prices and availability.
The Transonic T106.

The Transonic T106 Flowmeter is designed to take all modern probes from 0.5V series to 36mm A-Probes.  The T106 has a digital display for mean flow and an analogue dial for pulsatile signal display.  The meter is fitted with a selection of switchable filters and calibration outputs for calibrating/scaling external devices.

The Transonic T206.

The T206 like the T106 will take all modern probes.  The T206 is a rack-mountable two channel Flowmeter with built-in ultrasound synchronization (to avoid cross-talk between probes located close to on another).

 

How it works...

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Illustration of Transit-Time Flow Flowprobe.

Using wide-beam illumination, two transducers (or four on certain probes) pass ultrasonic signals back and forth, alternately intersecting the flowing liquid in the upstream and downstream directions.  In the same way that a swimmer will move quicker in the downstream direction than in the upstream direction, the speed of the ultrasound is effected by the flow of liquid passing through the 'acoustic window' of the flowprobe.   The Flowmeter derives an accurate measure of the 'transit-time' it took the wave of ultrasound to travel from one transducer to the other.  The difference between the upstream and downstream integrated transit times is a measure of volume flow.

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Applications...

Since the early 1980s the Transonic range of transit-time flowmeters have been used countless studies, on all manner of vessels in all manner of species.  If you would like advice on which type and size of probe would be appropriate for your application, please fill-in our enquiry form giving details of your application, the vessel/s of interest and the species of your subject.  We will be happy to send you the relevant literature including details of reprints which may be applicable.

Transonic Probes are available in three styles:
perivascular.jpg (3100 bytes) Perivascular : for chronic and acute applications.  Vessel sizes from 0.25mm to 36mm.

 

inline.jpg (1571 bytes) In-Line: for extra corporeal circuits.  For tubing sizes from 1mm to 24mm

 

clamp on.jpg (1725 bytes) Sterile Tubing - Clamp-on : for extra corporeal circuits.  For tubing sizes from 2mm to 28mm

All probes are factory calibrated and do not need calibrating or any other user input, prior to use.  Simply put the probe on the vessel or tubing and immediately the flow reading is displayed on the flowmeter. 

The flowmeters have two analogue outputs.  Pulsatile, which is the real-time flow waveform and mean which gives out a filtered signal of mean flow. This is a high-level output suitable for direct connection to a chart recorder or data acquisition system such as the Biopac MP100 system.

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Site by Rob Jones.
Copyright © 1999 Linton Instrumentation  . All rights reserved.
Revised: June 16, 2003.

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