High temperature waveguide rod usage and installation instructions.
Brief：In some cases, the acoustic emission sensor cannot directly contact the surface of the objectto be detected, such as high temperature, high pressure, low temperature, loose surface, etc.
A:
In some cases, the acoustic emission sensor cannot directly contact the surface of the object to be detected, such as high temperature, high pressure, low temperature, loose surface, etc. So it is necessary to conduct the acoustic signal through the wave guide, that is to connect the acoustic signal with the sensor through the wave guide rod as the medium. The common wave guide rod has a metal rod or metal tube. One end is fixed (welded or mechanically connected) on the surface of the object to be detected, and the acoustic emission sensor is coupled and installed on the other end.
But we don’t sale wave guides. But if customers require, we can help to purchase for customers.
Basic requirements:
- The material and structure of the wave guide rod should have a high temperature attenuation but very small acoustic attenuation to sound wave. And the structure will not produce reflection and refraction as far as possible;
- The middle of the wave guide rod is a metal rod with a diameter of 10-15mm, which should not be less than the crystal diameter of the AE sensor;
- Involving temperature factors, under 100 ℃/ 100 mm temperature decay can be referred under good ventilation conditions;
- There is available part of the detecting object for fixing the wave guide rod.
