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PUB CM/I3 14117 EN
· May 2014
Seals
Bearings and
housings
Lubrication
systems
Mechatronics
Services
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Why is it so important to remove all the paint before mounting
the sensor?
It is important to remove the paint to ensure that the sensor has a
good connection and AE transmission path. The layers of paint can
both attenuate the AE signal and also electrically isolate the sensor
from the machine.
Loctite 480 is recommended for mounting if a drilled and tapped
hole is not available. This is a rubber filled epoxy. Does that
negatively affect the acceleration ENV readings?
No, the rubber is very good for AE signal transmission and the layer
of epoxy is thin enough to not impact the gE signal.
Is it necessary to scrape the paint off the position where the
CMAC 2504 transducer will be placed for installation
verification?
It would be better to remove the paint, but it is not necessary as the
AE signal gets through the paint well enough for this simple test, and
also because we don’t need the electrical grounding which the paint
prevents with the sensor installation.
Is it important to ensure that the glue fills all the gaps?
Yes, this is important as AE cannot travel through air, so any air gaps
will attenuate the signal. However, as little epoxy should be used as
possible.
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