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Ultrasonic Transmitter Accessory (if equipped)
The Whisper Ultrasonic 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. The Transmitter
produces the frequency detected by the Whisper. By placing the Transmitter in a sealed
area and scanning the exterior of this area, any signal escaping from the sealed area will
be indicated by the Whisper. A flaw in the seal can quickly and accurately be pinpointed.
1. Turn the transmitter power switch on. The LED will illuminate to indicate it is operating.
You will not be able to hear the tone generated by the transmitter.
2. Place the Transmitter into the area to be tested. Seal area to be tested completely.
3. Set the "Sensitivity" control of the Whisper to maximum.
4. Scan the exterior area for the suspect leaks.
5. To pinpoint leaks, see
6. When using the transmitter with headphones plugged into the Whisper, the instrument
will indicate ultrasonic disturbances through a variable-pitch tone.
If your Whisper did not come with a transmitter, you may order one under part number
700-600-G1 from your authorized distributor.
Care and Maintenance
To clean exterior surfaces, wipe with a soft damp cloth.
When the batteries near the end of their useful life, the "Battery" LED will flash. To
change the batteries, depress the release tab using a coin or a screwdriver and slide the
cover back. Replace the batteries with two new "D" cell alkaline batteries. Replace the
cover by holding it in place along the side rails while sliding it forward to engage both the
rear hooks and the front release tab.
To avoid accidental damage to the Whisper instrument or headphones, unplug the
headphones from the detector when placing it in the case for storage.
"Locating Leaks" on page
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