NL Acoustics LF10 - Remote Update; USB Update; Air Leak Detection Features; Autofilter

22
4.12 Remote update
When connected to the Internet via WiFi, the LF10 will
automatically download available soware updates.
If an update has been downloaded, it will be applied
automatically the next time the LF10 is started. The current
soware version can be noted at the bottom of the screen
when pressing the Settings button.
4.13 USB update
If the remote update feature cannot be used, the LF10
can also be updated using a USB flash drive. Place the
soware update file provided by NL Acoustics in the root
directory of the flash drive. Be careful not to place the file
just in any folder. Do not rename the file. Open the USB
port cover on top of the LF10 and insert the flash drive in
the USB port. Check to ensure that the USB flash drive is
correctly aligned to the port before inserting it in the port.
The LF10 will detect the soware update present on the
flash drive and ask if you want to apply the update. Press
Yes to copy the update to the LF10. Do not remove the
flash drive while the update is being copied. Once
the update has been copied to the camera, you will be
asked to restart the device to apply the update. Remove
the flash drive and put the USB port cover back in place.
Shut the LF10 down and restart it. You are now ready to
use the camera with the updated soware.
5.1 AutoFilter
The LF10, automatically selects the most suitable filter
in order to obtain the most accurate leak detection
results. It also eliminates known industrial disturbance by
actively taking into account the environment where the
LF10 is being used. The most suitable filter is therefore
chosen automatically by the AutoFilter. The frequency
range of detection is from 2 kHz to 65 kHz, from which
the AutoFilter will chose the most suitable filter. It is
recommended to leave the AutoFilter setting on.
If desired, it is also possible to manually choose between
a number of predefined filters by activating them in the
Advanced Settings. Press the Settings button and go to the
second page under Advance Settings. From the button at
the top-right of the main screen you can then choose from
the following filters:
Ultr (30 to 65 kHz): The best alternative for cases with
strong background noise. Typically only to be used at
short distances.
High (20 to 30 kHz): Filters out most background noise
sources with a good detection distance.
Full (2 to 65 kHz): This filter is only available when
enabling all available filters from the advanced settings.
It utilizes the full frequency range of 2 to 65 kHz. This
filter is not ideal for finding leaks, as it is affected by low-
frequency background noise and might not be able to
pick up very quiet sound sources.
The most appropriate filter will vary from case to case.
Itis good practice to test the different filters available
tosee which filter delivers the best results.
5.2 AutoDistance
The smart functionalities of the LF10 allow it to estimate
distances automatically. The AutoDistance calculates the
distance to the loudest leak by using the acoustic sensors
of the camera. Accurate cost and leak size estimates
are produced by taking into account the loss in sound
intensity over distance. The AutoDistance functionality
does this in real-time and automatically. The precisely
calculated distance is shown on the display screen.
5. AIR LEAK DETECTION FEATURES
The LF10 detects compressed air leaks based on the sound the leak emits. The LF10 uses the functionalities called
AutoDistance and AutoFilter for this purpose. The AutoDistance calculates the distance to the sound source. This distance
information is used to calculate and display an estimate of how much the detected leak costs annually and the distance to
the leak. The AutoFilter facilitates this functionality by automatically choosing the correct filter to receive the most accurate
readings for the sound signal itself. For the most accurate readings, the leak-related settings found in 5.3 Specific settings
are correctly entered.