SKF TLGU 10 Instrucciones De Uso página 7

1. Introduction
The SKF Ultrasonic Lubrication Checker TLGU 10 is
designed to help improving relubrication practices,
based on machinery condition.
Fig. 1 – SKF TLGU 10 on a grease gun
1.1 Intended use
It can be used to verify that a lubricant is effectively
reaching the lubricated component as well as
adjusting a relubrication route, based on initial
OEM recommendations for example. TLGU 10
can be used to have a condition based approach
of relubrication practices, as a complement to
theoretical calculations. TLGU 10 can not determine
the machine condition nor its bearings. TLGU 10
will not detect over-greasing situations. If your
machine shows some unusual acoustic patterns
when using TLGU 10, some more investigations are
recommended, using other condition diagnosis tools
like vibration analysis and/or lubricant analysis.
1.2 Principle of operation
The principle of operation of the TLGU 10 can be
compared to a special microphone, sensitive only to
high frequency ultrasounds. A sensitive piezoelectric
crystal is used as a sensor element.
Minute sound waves excite the crystal, creating an
electrical pulse that is amplified and then
"heterodyned" or translated into an audible
frequency that the user can hear through a pair of
noise reduction headphones.
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