Soil hardness meter

Soil compaction, also known as soil hardness, soil firmness, or soil penetration resistance, is typically measured by the resistance encountered when a metal plunger or probe is pressed into the soil (units: kgf/cm²). Soil compaction refers to the soil's ability to resist compaction and fragmentation under external forces, and is one aspect of soil properties. Additionally, soil physical properties include soil texture, structure, porosity, etc., which relate to soil firmness, plasticity, permeability, drainage, water retention capacity, and the ease of root penetration.

Soil compaction is composed of soil shear strength, compressive strength, and friction strength, among others. It serves as a composite indicator of soil strength. When a metal plunger or probe is pressed into the soil, two methods are used: dynamic loading and static loading. The measured values differ between the two methods but are related. The shape of the plunger can be conical, flat-headed, spherical, or wedge-shaped, and these shapes also affect the measured values. For the same method, the measured values are primarily determined by soil texture, bulk density, and moisture content, with moisture content having the greatest influence.

Soil hardness meters can predict soil bearing capacity, tillability, and resistance to root growth. The degree of soil compaction affects crop root penetration and growth, making it an important soil physical property indicator used to evaluate soil tillability. Compacted soil can prevent water infiltration, reduce fertilizer utilization, impair plant root growth, and lead to reduced crop yields.

• Smart digital display measurement: LED LCD display with blue backlight mode, making data reading clear at a glance, even in low-light environments.

• Real-time mode/peak mode automatic switching.

• Multi-function button: three units can be switched freely with a single button (Newton N, kilogram KGF, pound LBF).

• Multi-functional measurement: Bidirectional testing for user convenience, with an LED yellow light during operation.

• Reversible display screen: Convenient for density measurement, viewable from both front and back.

• Fast and precise response: Equipped with an 8-bit high-performance microprocessor, achieving second-level measurement response, fast data refresh, and strong stability.

• Large data storage capacity: Supports storage of 999 sets of measurement values, allowing easy access to historical data for continuous field monitoring.

• Long battery life: Built-in high-capacity battery enables continuous operation for 10 hours, meeting all-day field testing requirements.

• User-friendly operation: Ergonomic design for comfortable one-handed grip and simple one-button operation.