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Fluke ii900 Sonic Industrial Imager
The first industrial acoustic camera featuring Fluke SoundSightTM Technology
Acoustic Imaging Basics & Applications
1
What is acoustic sound imaging?
2Copyright Sept 2019 Fluke Corporation
What is acoustic sound imaging?
• A technique to create an image of the scene based on the sounds in the scene
• The sound image is then overlaid onto a visible image 3Copyright Sept 2019 Fluke Corporation
4
Acoustic Imaging vs. Conventional Ultrasonic Tools
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Acoustic Imaging vs Conventional Ultrasonic Tools
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Acoustic Imaging vs Conventional Ultrasonic Tools
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Practical considerations in use
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Practical considerations
• Reflection
• Diffraction (direction of sound)
• Noise - Frequency selection
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Practical considerations
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Does the sound spot look right?
(For example, is it on a reasonable sound source or a hard floor?)
Reflections
Does the it move when you move?
If yes, then it is a reflection.A B C
D E F
Always move to confirm location of sound sourceCopyright Sept 2019 Fluke Corporation
Practical considerations
10
Confirming sound source
Reflections
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Echoes / Reflections
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Practical considerations
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Always move to confirm location of sound source
Direction
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Practical considerations
• In the ii900 the signal or sound of interest to us is very often in the high frequency range.
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Noise
• A high pressure leak will have a wide frequency spectrum. In a noisy factory there is likely to be a lot of low frequency sounds. We use the fact that a high pressure leak has sound in the 30-35KHz band.
Copyright Sept 2019 Fluke Corporation
Practical considerations
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Noise
• Removing the interference from other background noise.
• Ability to pick up the leak at greater distances, as using higher frequencies will require being much closer to the leak.
By filtering all other frequencies we can benefit from:
Select an appropriate frequency band to maximize the signal from the leak. Copyright Sept 2019 Fluke Corporation
Application
Examples
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Compressed Air Drop Downs
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Air Compressor Connections
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Air Regulators
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Discharge Valve Connections
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Production Line @ a Food & Beverage Facility
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Boiler Tubes
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Natural Gas Line @ a Steel Mill
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Air Lines on Semi-Trucks
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Nitrogen Leak
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Ammonia Compressor Leak
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Argon Tank Leak
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Duct Leak @ a Coal Plant
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Operation of instrument
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Instrument operation
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Save
Buttons
On/off switch
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Instrument operation
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MenuAppears when you touch the screen on the right
Screen
Center readingCan be turned off
General infoBattery, date, time
dB scale color paletteCan be turned off
Amplitude spectrum
Frequency scale
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Instrument operation
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Menu
ImageSelect to save image or video
MemoryShows saved images and video
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Instrument operation
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Menu
PaletteChoose from 3 different color palettes. Default is Red-Blue
MarkersChoose to display center marker or turn it off
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FAQ’s
• Leaks can be detected as far as 164 ft.
• You can store up-to 999 images on the device
• The battery life is 6 hours
• The ii900 can visualize more than just compressed air leaks
• We cannot quantify leaks…yet
• The camera does visualize vacuum leaks
• This version of the camera is not ideal for corona discharge Copyright Sept 2019 Fluke Corporation 33
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