Background/Objectives: This paper considers design of penetrometer’s conical tip that works on the principle of compressed air release for the purpose of evaluation of soil porosity. This provides determination of soil state upon influence of all types of agricultural equipment. Methods/Statistical analysis: Four variants of design with different geometric parameters of radiuses of their beddings and cone angles were used.

Findings: The conducted analysis revealed the optimal variant for working measurements is the cone tip with 300 cone angles and bedding radius equal to 7 mm. The tip includes four venting orifices, which under pressure of 6 bar provides better penetration to soil of various depth without causing damage to its structure

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