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Do not use the Tone test in a complete vacuum.
Ultrasound will not travel in a vacuum. Sound waves need molecules to vibrate and conduct the
signal. There are no moveable molecules in a complete vacuum.
If a partial vacuum is to be drawn where there are still some air molecules to vibrate, then the Tone
Test may be implemented successfully. In a laboratory, a form of the Tone Test is utilized in seal
leaks of an electron beam microscope. The test chamber has been fitted with a specially designed
transducer to emit the desired tone and a partial vacuum is created. A user then scans all seams for
sonic penetration. The Tone Test has also been effectively utilized to test tanks before they are put on
line, piping, refrigerator gaskets, caulking around doors and windows for air infiltration testing, heat
exchangers for leaking tubes, as a Q.C. test for automobile wind noise and water leaks, on aircraft to
test for
problems associated with cabin pressure leaks and glove boxes for seal integrity defects.
Optional
Pipe T hreaded
Tone Generator
UE-WTG2SP
