Superior Signal Company LLC AccuTrak
®
VPE
User’s Manual
© 2015
4
DESCRIPTION
The Superior AccuTrak
®
VPE is a non-invasive leak detector that can detect
both pressure and vacuum leaks. It is a classical ultrasonic leak detector,
however, it contains a technology level that sets a new standard for the state
of the art. Only ten years ago a similar instrument was thirty times its size and
ten times its price.
Remember, the AccuTrak
®
VPE detects ultrasound
–
not refrigerant. It is a
listening device not a sniffer. Because of this fact, the AccuTrak
®
can
function in areas where heavy wind or a concentration of fumes from leaks
has rendered other detectors inoperable.
A leak is any unwanted flow of a substance out of a system, or in a vacuum
the flow is into the system. Friction in flow generates sound. Water flow in
pipes creates sound as well as air out of a tire. The sound we can hear is less
than a third of the total spectrum of frequencies generated. The sound in
small leaks is mostly ultrasonic. Humans cannot hear this because it is above
the human hearing range. In order for a leak to generate ultrasound, the flow
through the leak path must be turbulent. For this to happen the velocity that a
gas is moving through the leak point must be high in relation to the orifice.
The AccuTrak
®
VPE receives the ultrasonic sound that escapes from a leak
point, processes it, and displays its strength. The larger the leak, typically the
higher the indication will be on the instrument. In addition to the display, the
VPE also produces an audio reproduction of the leak sound. The intensity of
the audio will change proportionally to the display. This is why when you use
the Superior AccuTrak
®
VPE you can see the leak, and also hear the leak.
This allows you to easily identify leaks, distinguish them from other sources of
ultrasound, and then quickly pinpoint the exact location of the leak.
VPE
VPE-GN
