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4. Using the ReLog
Mounting
How you mount the ReLog is the
most important aspect for you as a
user when it comes to making sure
that the measurements will be as
good as they possibly can be. Why?
Simply because if the vibration
transfer is not perfect it will mean
that the ReLog cannot fully utilise
its capabilities and measure the vi-
brations accurately.
To avoid inaccurate results, the fol-
lowing information should be taken
into account.
Preparations before mounting:
Make sure that the surface on
which the ReLog will be mounted is
free from the following:
• Oil
• Grease
• Dirt
• Excessive amounts of dust
• Water/moist
To ensure this, clean the surface
with an industrial cleaner. Make
sure that you, after having cleaned
the surface, wipe it off properly so
that there is no trace of liquids or
moisture on the surface.
Done? Then you are ready to pro-
ceed to the next step!
There are numerous ways to mount
an accelerometer (we will cover
most of them below) and as stated
above, the choice of method has
a big impact on the results of the
measurements. We would recom-
mend them in the order as follows:
•
Mounting with screws/studs
•
Mounting with adhesive tape
•
Mounting with magnets
•
Mounting with wax/glue
Mounting with screws/studs
Using screws/studs is the best
option but it does require drilling
holes in the object that you would
like to monitor. If you can do this,
great! You will find that this will en-
sure most accurate results when
measuring at higher frequencies.
We recommend using two screws/
studs on each side of the ReLog
to ensure that the unit is firmly at-
tached to the object.
Mounting methods
Mounting by double-sided tape
This will most likely be the go-to
option for most users of the ReLog
as it is likely that you do not wish
to drill holes into the object you are
measuring on. Each ReLog comes
with several strips of double-sided
tape from 3M that you attach to the
bottom of the ReLog.
Mounting with magnets
Using magnets to mount the ReLog
is a third approach if one of the two
above does not work for you.
There are many upsides to using
magnets, such as them making it
very easy to mount and demount
the ReLog. However, when using
magnets you will limit your ability
to measure higher frequencies as
magnets filter away most vibra-
tions found in frequencies above
1000 Hz. If higher frequencies are
important for your analysis, please
use screws/studs or double-sided
tape.
Mounting with wax/glue
If none of the above fits your pur-
pose you can always use wax/glue
to mount the ReLog. Please do keep
in mind that when you use wax/glue
it can be fairly tricky to remove all
re- mains from the ReLog after the
measurement has been completed.
Please also keep in mind that most
wax filters out high-frequency vi-
brations, so the resolution on your
measurements will be worse if you
are looking to analyse high frequen-
cies.
Other mounting methods?
From experience, we know that
each environment is different from
the previous one and that some-
times you have to be a bit creative
when it comes to mounting the
ReLog. We strongly recommend
that you use the mounting
alternatives suggested above, but
if you have any questions around
your specific environment please
do reach out to us and we will be
happy to advise what we feel would
be best.
