7
(2) Read device parameters
Downlink: 0209000000000000000000
Device return:
8209000000780000000000 (current parameters of device)
6. Installation
The device is suitable for measuring ordinary yellow-cinnamon soil, black soil, and terra rossa. It is not applicable to saline-alkali
land, sandy land, or other powdery objects with high salinity. The soil humidity shall be more than 25%
Installation and use method of sensor:
1. Quick test method:
Select a suitable measurement location, avoid stones, and ensure that the steel needle will not touch hard objects. Throw away
the topsoil according to the required measurement depth, maintain the original tightness of the soil below, hold the sensor
tightly and insert it vertically into the soil. When inserting, do not shake left and right. It is recommended to measure multiple
times to obtain the average value within a small range of a measurement point.
2. Buried measurement method:
Dig a pit with a diameter of >20cm vertically, insert the sensor steel needle horizontally into the pit wall at a given depth, and
fill the pit tightly. After it is stable for a period of time, it can be measured and recorded for consecutive days, months or even
longer.
Installation precautions:
1. When measuring, the steel needle must be completely inserted into the soil.
2. Avoid high temperature caused by strong sunlight directly shining on the sensor. Pay attention to lightning protection for field
use.
3. Don't bend the steel needle violently, don't pull the sensor lead wire forcibly, and don't beat or hit the sensor violently.
4. The protection grade of soil sensor is IP68, which can soak the whole soil sensor in water.
5. Due to the existence of RF electromagnetic radiation in the air, it is not suitable to be energized in the air for a long time.
Land filled after excavation
Avoid stones
