AUT Fluid Ultrasonic Couplant
Echo Ultrasonics offers the broadest range of fluid UT couplant for AUT Fluid Ultrasonic Couplant. The selection criteria includes viscosity, temperature range and water solubility requirements. Echo Ultrasonics has fluid options for use in very cold environments to hot applications and everything in between.
Echo 6 HT
Echo 6 HT is unlike plant-based oils, Echo 6 HT won’t form a film or varnish nor will it gum up bearings or equipment. Echo 6 HT serves as a long-term lubricant for mechanical AUT equipment.
Echo 6 HT is low in viscosity and maintains a stable viscosity across a broad operating range.
Echo 6 HT provides excellent corrosion inhibition on ferrous metals and is compatible with all metals and most plastics.
Specifications
| Operating Range |
-40° to 675°F (-40° to 357°C) |
|---|---|
| Viscosity |
Fluid |
| Auto-ignition Temperature | 789° F (421° C) |
| Sound Velocity | 1015 m/second |
| Halogens and Sulfur |
Less than 50 ppm |
| Specific Gravity | 0.97 |
| Weight/Gallon | 8.91 pounds / 4.04 kg net |
| Packaging |
1 gal / 3.8 liter rigid container |
Echo 8 HT Fluid for AUT and Robotics
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.
Specifications
| Operating Range |
-50°F to 800°F (-45°C to 425°C) |
|---|---|
| Viscosity |
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 |
Quart / .95 liter rigid container |
EchoFlow Fluid
EchoFLOW is an AUT fluid couplant that is easy to pump in cold environments and will not boil or evaporate on hot parts up to 240°F / 115°C. The increased acoustic impedance reduces surface noise on rough surfaces and highly attenuating materials and enhances ultrasound transmission.
- High acoustic impedance
- Low viscosity fluid, pumpable at -40°F/C
- Pasteurized for product purity
- Will not harden on equipment
- Compatible with plastics
Safety
- Approved for use on the Alaskan Tundra
- Contains no heavy metals, harsh surfactants, glycol ethers, nitrites, silicones, dyes or fragrances.
Specifications
| Operating Range |
-40° to 240°F (-40° to 115°C) |
|---|---|
| Viscosity |
Fluid |
| Boiling Point | 250°F (121°C) |
| Freezing Point | -51°F (-46°C) |
| Auto-ignition Temperature | 732°F (389°C) |
| Halogens and Sulfur |
Less than 50 ppm |
| Acoustic Impedance | 2.143 x 105 cm/sec |
| Specific Gravity | 1.162 |
| Packaging |
1 gal / 3.8 liter rigid container |
Echo 3HT Fluid
When water won’t work, Echo 3 HT is the next step. For temperatures up to 350˚F (177˚C), Echo 3 HT is water soluble, leaves no residue and is compatible with a broad range of materials.
- Broad operating range -30 °F to 350°F (-34°C to 177°C)
- Water soluble: easier to remove than most fluid ultrasonic couplants
- No “oil slick” when used where couplant may drip into a body of water.
- Lowest viscosity fluid that remains pumpable down to 35°F / 2°C
- Compatible with a broad range of materials including most metals, plastics and composites
- Good Surface wetting due to low surface tension and solvent properties.
- Slow Drying at ambient temperatures
Contains no glycerin which can interfere with subsequent penetrant inspection.
Environment and operator friendly – no formaldehydes, nitrates, nitrites or glycol ethers.
Minimal residue
Removal: Wipe with wet or dry paper or cloth rag or water wash.
Specifications
| Operating Range |
-30 °F to 350°F (-35°C to 176°C) |
|---|---|
| Viscosity |
Fluid |
| Halogens and Sulfur |
Less than 50 ppm |
| Packaging |
1 gal / 3.8 liter rigid container |