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®
®
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2.
2.
Reducing
Reducing
the
the sen
sensitivity
display
display, and also in the headset.
, and also in the headset.
able.
able.
Sometimes the most interfering background sounds come from areas of high turbulence within
Sometimes the most interfering background sounds come from areas of high turbulence within
a pipe.
a pipe.
This can be where
This can be where
high velocity
high velocity
partially closed valve.
partially closed valve.
These situations will produce a high frequency hiss which is very similar to
These situations will produce a high frequency hiss which is very similar to
the sound of the leak.
the sound of the leak.
Use the methods above
Use the methods above fo
Frequency Selection (Airborne)
Frequency Selection (Airborne)
Another metho
Another
method of reducing back
d of reducing
background noise is by
background sounds which interfere with the leak detection may be
background sounds which interfere with the leak detection may be
another
another frequency
frequency.
.
The proper setting will depend on the en
The proper setting will depend on the
found "AirH" to be most effective for leak detection.
found "AirH" to be most effective for leak detection.
Recording Overall System Noise
Recording Overall System Noise
®
®
Use the Tru Pointe
Use the Tru Pointe
2100 to record sound levels of
2100 to record sound levels of
motors, and even noisy ducts.
motors, and even noisy ducts.
The overall ultrasonic sound level of a system can be recorded
The overall ultrasonic sound level of a system can be recorded
and compared to previous
and compared to previous a
and current readings.
nd current readings.
sonic range of a noisy system.
sonic range of a noisy system.
This part of the sound will increase in proportion to the sonic part
This part of the sound will increase in proportion to the sonic part
and is an indication of the problem.
and is an indication of the problem.
Taking a Baseline Reading
Taking a Baseline Reading
When taking a reading of overall noise level, begin by reducing the sensitivity until the bar graph
When taking a reading of overall noise level, begin by reducing the sensitivity until the bar graph
reads less than 1/2.
reads less than 1/2.
This will give you room on the display for f
This will give you room on the display for
IMPORTANT:
IMPORTANT:
2100 allows for
2100 allows for
the operator must note the settings to ensure
the operator must note the settings to ensure
Record the sensitivity, volume, sensor type and the
Record the sensitivity, volume, sensor type and the
numeric level reading on the
numeric level reading on the
position from which the read
position from which the
your baseline for future tests.
your baseline for future tests.
Touch Probe Applications
Touch Probe Applications
Ultrasound not only travels through air but solid materials as well.
Ultrasound not only travels through air but solid materials as well.
used to detect abnormal system sounds which are
used to detect abnormal system sounds which are
abnormal
abnormal
fl
fl
ow in piping, valves, and steam t
ow in piping, valves, and steam
friction or increased wear in bearings, motors and
friction or increased wear in bearings, motors and
Frequency Selection (Touch Probe)
Frequency Selection (Touch Probe)
Changing the frequency bands of the touch probe
Changing the frequency bands of the touch probe
within a system.
within a system.
For example in a steam trap, the Probe High setting makes it easy to isolate the
For example in a steam trap, the Probe High setting makes it easy to isolate the
sound of a steam traps purge cycle, while the
sound of a steam traps purge cycle, while the
10
10
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sitivity
will
will suppres
suppress the
s the
effect
effect
background
background
This will help make the leak sound more identi
This will help make the leak sound more identi
fl
fl
ow changes direction, or is restricted such as
ow changes direction, or is restricted such as
for reducing the background noise
r reducing the background
ground noise is by
adjusting the
adjusting the fr
environment.
vironment.
compressor noise, fan vibration, fan belts,
compressor noise, fan vibration, fan belts,
®
®
The Tru Pointe
The Tru Pointe
future readings.
uture readings.
The digital circuitry of the Tru Pointe
The digital circuitry of the Tru Pointe
great accuracy and consistency, but
great accuracy and consistency, but
display, as well
display
, as well
as the
as the
reading was taken.
ing was taken.
This will be
This will be
internally
internally
generated.
generated.
traps.
raps.
Other applications include the
Other applications include the det
gears.
gears.
sensor allows the user to hear
sensor allows the user to hear
Probe Low setting allows you to hear the trickle
Probe Low setting allows you to hear the trickle
I
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3
noise has
noise has
on the
on the
fi
fi
-
-
within a
within a
noise.
.
frequency band.
equency band.
The dominant
The dominant
avoided by switching to
avoided by switching to
In general, we have
In general, we have
2100 will only record the ultra-
2100 will only record the ultra-
®
®
success.
success.
The touch probe sensor is
The touch probe sensor is
Such soun
Such
sounds include
ds include
detection of
ection of
different sounds
different sounds
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