Echo 8 HT™ High temperature ultrasonic coupling fluids are available in four 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 four 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.
Echo 8 HT has low toxicity and is essentially non-irritating
Specifications
| Operating Range | -50°F to 800°F (-45°C to 425°C) |
|---|---|
| Viscosity | Fluid ≈ 400 cps |
| 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 | Quart / .95 liter rigid container 1 gal / 3.8 liter rigid container 5 gal / 18.9 liter rigid container |
