daviteq Lidar People Counter, Manual

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FDR sensors need to have good contact with the medium they measure with no air gaps;
Since the electrode directly measures the conductivity of the soluble salt ions in the soil, the soil volumetric water
content must be higher than about 20% when the soluble ions in the soil can accurately reflect the conductivity
of the soil. In the long-term observation, the measured value after irrigation or rainfall is closer to the true level. If
you are performing a quick test, you can water the soil to be tested first, and perform the measurement after the
water is fully penetrated;
The sensor should be protected from severe vibration and impact, let alone knocked with hard objects;
Because the sensor has a black housing, the sensor will heat up sharply (up to 50°C) under strong sunlight. In
order to prevent excessive temperature from affecting the temperature measurement of the sensor, please pay
attention to shading and protection when using it in the field.
- Clean the soil surface by removing the debris, and vegetation...
- Insert the electrodes completely in the soil, as in the below picture;
- If you measure on a hard surface, you should drill a hole first (the hole diameter should be smaller than the
probe diameter), then insert it into the soil and compact the soil before measuring;
- Make a soil profile in the vertical direction, slightly deeper than the installation depth of the bottommost sensor,
between 20cm and 50cm in diameter;
- Insert the probes horizontally at different layers of soil;
5. Installation notes
General Notes:
* All the metal electrodes must be inserted into the soil during measurement;
* Avoid direct sunlight on the sensor, which will cause excessive temperature;
* Do not bend the metal electrodes violently, do not pull the sensor lead wire with force, and do not beat or
violently impact the sensor;
* The protection grade of the sensor is IP68, which can soak the sensor in water;
5.1 Soil Surface Measurement:
5.2 Multi-layer Measurement