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2. SCANNING MODULE
This module is utilized to receive air-borne ultrasound such as
the ultrasounds emitted by pressure leaks and electrical discharges.
To use, make sure it is plugged in to the front end of the metered
pistol housing by aligning the plug with the receptical and inserting
it firmly.
To use the Scanning Module:
1. Plug in to front end.
2. Start with the sensitivity selection dial at maximum (8).
3. Start to scan the test area.
a. The method of air borne detection is to go from the "gross to the fine". If there is too much
ultrasound in the area, reduce the sensitivity, place the RUBBER FOCUSING PROBE (described
below) over the scanning module and proceed to follow the test sound to its' loudest point. If it is difficult to
locate the sound due to a high intensity signal, keep reducing the sensitivity and following the meter to the
loudest point.
RUBBER FOCUSING PROBE: The Rubber Focusing Probe is a circular shaped rubber shield. It is used to
block out stray ultrasound and to assist in narrowing the field of reception of the Scanning Module. It also
increases the sensitivity. To use, simply slip it over the front of the scanning module or the contact module.
NOTE: To prevent damage to the module plug, always remove the module BEFORE attaching and removing the
Rubber Focusing Probe.
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Scanning Module
3. CONTACT (STETHOSCOPE) MODULE
This is the module with the metal rod. This rod is utilized as a
"wave-guide" that is sensitive to ultrasound generated internally such as
within a pipe, bearing housing, steam trap or wall. Once stimulated by
ultrasound, it transfers the signal to a piezoelectric transducer located
directly in the module housing.
To use the Stethoscope Module:
1. Align the pin located at the rear of the module with the jack in
the front end of the Metered Pistol Housing and plug in firmly.
2. Touch test area.
3. As with the scanning module, go from the "gross" to the "fine". Start a
maximum sensitivity on the Sensitivity Selection Dial and proceed to
reduce the sensitivity until a satisfactory sound and meter level is
achieved.
Contact Module