SOUND DETECTAI USER MANUAL
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8-8-1-9 Specific Power
The specific power is a measure of how much energy is needed to produce a
certain amount of compressed air. The unit is either kW/m³/min or kW/100 CFM.
This option is for advanced users; leave it at the default value if you do not know
the specific power of your compressed air system.
Adjust the power of compressed air
as follows:
1.
Using the touchscreen, tap the Settings icon to open the main menu.
2. Tap More until Air Mode Settings appears in the menu list.
3. Tap Air Mode Settings.
4. Tap More until the Specific Power option appears in the menu list.
5.
Tap the Change button next to
Specific Power
.
A keyboard appears.
6.
Use the keyboard by tapping the touchscreen to input a numerical value.
7.
Tap ✓ save changes and close the keyboard. Tap X to cancel changes and
close the keyboard
.
8.
Tap ← to save and exit the menu.
8-8-2
Partial Discharge Detection
The device must be set to Power Mode to detect compressed air leaks (see
Section 8-4 Application Modes
)
The device detects partial discharges based on the sound they emit and will
automatically determine AC frequencies of 50 and 60 Hz. Measuring accurate
discharge severity relies on the distance settings input by the user (see
Section
8-7-1-2 Distance
).
When a possible partial discharge has been detected, its so called PRPD (phase-
resolved partial discharge) pattern will be shown on the top of the screen. By
default, the pattern is shown in a small window. Press on the window to enlarge
it. Press once more to make it small again.
The device can estimate the cost of leaks.
8-8-2-1 Filters for Partial Discharge
Background noise can disrupt acoustic inspections. The different filters available
on the device filter out background noise in order to concentrate on the ultrasonic
frequencies where the sound of a leak is typically stronger than noise.
The Norm filter filters out low frequency background noise. Use the High and
Ultra filters to block out audible background noise. Users should test inspection
areas with the different available filters to see which filter gives the best results.
Change the filer type by using the touchscreen to tap the filter button in the top
right corner.