2.4
Terminal instructions
2.4.1
Quick test method
Select a suitable measurement location, avoid rocks, ensure that the steel
needle does not touch hard objects, throw away the surface soil according to the
required measurement depth, maintain the original tightness of the soil below, hold
the sensor vertically and insert it into the soil. Do not shake left and right. It is
recommended to measure multiple times to find the average value within a small
range of a measuring point.
2.4.1 Buried measurement method
Dig a pit with a diameter of >20cm vertically, insert the sensor needle
horizontally into the pit wall at a predetermined depth, and fill the pit tightly. After a
period of stability, measurement and recording can be carried out for several days,
months or even longer.