LNU sensor : Installation & programming
Installation Guide
K0J00016-EN-A02
IJINUS – 25 ZA de Kervidanou 3 – 29300 MELLAC – FRANCE
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www.ijinus.com
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Calibration of the sensor Case N°2 (Classic example of a manhole with an invert channel)
In case no. 2, with an echo having several peaks, the software indicates the presence of "critical" obstacles that can
disturb the measurement if the sensor remains in simple calibration. These critical obstacles appear in red on the graph,
while the echo reported by the sensor as the measurement is shown in green. The power indicator is still present.
In this case, follow the following procedure:
- Activate the
advance mode
by clicking on the button at the top,
The software displays a more precise first stage of calibration named “Measures parameters”: This parameter allows to
extend the exclusion area corresponding roughly to the dead band of the sensor. This parameter is to be modified,
mainly in the case of 0-6m probes if there are interfering echoes in this zone, or in the case of a probe mounted on an
angular return bracket. The manipulation consists in increasing the area of the pink zone, so it covers the different peaks
for distances close to the probe.
