9
Using the Contact Probe (if equipped)
The optional metal contact probe offers additional capabilities when used with
Whisper. The contact probe can be a useful accessory in diagnosing machinery.
For best results, always use the headphones when using the contact probe to
enable the heterodyne feature.
To use the contact probe, twist the threaded end into Whisper’s plastic nose piece
and turn Whisper On. Touch the end of the contact probe to bearing housings,
solenoids, pistons, and other mechanical equipment to allow the frequencies to
travel into Whisper's ultrasonic transducer. Adjust sensitivity as needed. Properly
functioning machinery sounds smooth and clear, while poorly functioning
machinery may make irregular or grinding noises. Over time you will learn to
recognize when machinery sounds to be in good working order or when it sounds
worn and in need of maintenance.
Do not place the contact probe in running machinery, fan cages,
drive belts, or other moving parts. Always use extreme caution
when using the contact probe around machinery.
Whisper Transmitter Accessory (if equipped)
Whisper Transmitter is an accessory which can be used with the Whisper
Ultrasonic Leak Detector to locate leaks in walk-in coolers/freezers, wall and
ceiling joints, around doors, windows, body seals, rubber moldings, ducts, etc.
Whisper Transmitter produces the frequency detected by Whisper. By placing
Whisper Transmitter in a sealed area and scanning the exterior of the area.
Whisper can detect any signal escaping the sealed area. A flaw in the seal can be
quickly and accurately pinpointed.
1. Turn the transmitter power switch on. The POWER indicator will illuminate to
indicate it is operating.
NOTE: You will not be able to hear the tone generated by the transmitter.
2. Place Whisper Transmitter into the area to be tested. Seal area to be tested
completely.
3. Set the “Sensitivity” control on Whisper to maximum.
4. Scan the exterior area for the suspect leaks. To pinpoint leaks, see "Locating
Leaks" on page 7.
NOTE: When using Whisper Transmitter and headphones, Whisper will indicate
ultrasonic disturbances through a variable-pitch tone
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