Instrument principle: Soil hardness is the use of the theoretical value of the gauge Kg / Cm2, direct measurement of the hardness of the soil. For the soil permeability, aeration and large-scale operation of the soil properties of the survey, the use of this soil hardness meter is very convenient and accurate. test methods: 1, the first to be measured leveling the surface of the soil, then all the tip part of the machine into the soil until (mouth) part. 2, pull the soil hardness meter straight down and read the hardness indication from the table. 3, read the measured value is completed, please turn the driven needle knob to make the indicator to zero. 4, if the side of the head attached to the soil, will make the measurement value is incorrect, turn counterclockwise (mouth) Department, remove the round sleeve, please clean and go to a fixed position, you can measure again. 5, hardness indication range: 0 ~ 40 mm; 0 ~ 500 Kg / Cm2
Instrument principle: Soil hardness is the use of the theoretical value of the gauge Kg / Cm2, direct measurement of the hardness of the soil. For the soil permeability, aeration and large-scale operation of the soil properties of the survey, the use of this soil hardness meter is very convenient and accurate.
