Superior Signal Company LLC
AccuTrak
®
VPE-
1000 User’s Manual
© 2015
11
Applications Overview
1. Airborne Applications (External sounds)
The Airborne sensor (A.) is used to detect sound waves which travel to the
AccuTrak through the air. The most common airborne application is for leak
detection.
Leaks
When searching for leaks with the AccuTrak
®
, remember you are listening for the
turbulent flow of the gas as it exits the leak orifice (refer back to “Principles of
Operation” for a more detailed explanation). The AccuTrak
®
VPE-1000 is
capable of hearing leaks from over fifty feet away, but it is best to hold the
instrument as close to the test area as safely possible.
Stand a few feet from the suspected leak area, and reduce the sensitivity until
only the first one or two lights are lit on the LED bargraph meter. Check around
fittings, flanges and all other suspected areas. If at anytime the display is at
maximum due to background noise in the area, reduce the sensitivity (and
volume if necessary) and continue searching. The sound in the headset, and the
bar graph meter will increase as the unit is drawn closer to the leak. Using the
yellow flexible waveguide
will help reduce background noise interference and
also make the unit
’
s sensitivity more directional allowing you to pinpoint the
precise location of the leak.
In the case of larger leaks which may over concentrate “sniffer” type leak
detectors, try removing the waveguide and increasing the sensitivity. Then
sweep the instrument over the entire unit. Leaks may be where you least
suspect them, and the AccuTrak
®
may very likely detect something even from a
greater distance.
