Echo 8 HT™ Fluid for AUT and Robotics
Echo 8 HT™ High temperature ultrasonic coupling fluids are available in three viscosities; Grades 1, 4 and 10. Performance of a broad range of AUT and MUT ultrasonic flaw and thickness gaging applications from -50°F to 800°F (-45°C to 425°C) is possible with these three grades. Grade 1 is the lowest viscosity fluid (100 cST) for long or small diameter lines and quick spreading. Grade 4 is Echo’s standard viscosity fluid (400 cST) and is usually a good compromise between pump ability and run-off at the transducer. Grade 10 is a very thick fluid (5,000 cST – honey like) for MUT. It spreads easily over large hot surfaces, stays in place and leaves minimal, if any residue. All grades of Echo 8 HT provide excellent corrosion inhibition on ferrous metals, leave minimal residue and are compatible with all metals and most plastics.
Operating Range | -50°F to 800°F (-45°C to 425°C) |
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Viscosity | ≈ 400 cps, Fluid |
Grades | Grade 1, lowest viscosity, 100 cST, Grade 4, standard viscosity, 400 cST, Grade 10, very high viscosity, 5,000 cST for MUT |
Sound Velocity | 4900 ft/sec (1494 meters/sec) |
Specify Gravity | 1.07 |
Weight/gallon | 8.91 pounds/4.04 kg net |
Packaging |
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Chad H. Senior NDE, API Inspector –
We have been using it for shear wave inspections on high temperature components and have been quite happy with how it has been working. The big things I needed from it originally was to be spreadable, be able to stay on the surface and not leave a residue, all of which this couplant has provided.