Fluke SONOCHEK Operating Instructions Manual page 40

SONOCHEK
An additional label with a warning and information about the standard applied for laser safety is
enclosed separately together with the short instructions.
3.4.2 Applications and intended use
The airborne sound sensor with the accessories for various measuring tasks is specifically
designed for the following tasks:
 Detection and evaluation of leaks at compressed air, gas and vacuum systems
(depending on the app)
 Detection of leaks at windows, doors, cabins, vehicles or containers
(in combination with an ultrasonic transmitter)
 Detection of electrical partial discharges and insulation damage
3.4.3 Functional principle
The sensor attachments direct the ultrasound to the ultrasonic microphone.
The ultrasonic microphone in the sensor converts sound pressure fluctuations in the air into
an electrical signal over a wide frequency range. This electrical signal is already amplified and
digitized in the sensor. The further data processing and output is carried out in the measuring
device.
The target laser helps to precisely localize damaged points. If the sensor points towards the
damaged point during the search, this point can be detected by using acoustic signals by
pivoting the sensor and searching for a local sound level maximum. The target laser marks the
approximate position of the damaged point.
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Damage to sensor attachments possible!
The material of the attachments for the airborne sound sensor DBS10 can
be damaged from contact with gasoline.
 Prevent contact with gasoline. Thoroughly remove impurities as quickly
as possible.
 Do not use any cleaning agents containing gasoline for cleaning.
Operation of the device, sensor system and apps
SONOCHEK 09.2018