Soil compaction testing is performed using a soil compaction meter to measure the soil's ability to resist deformation under external forces. When the probe of the soil compaction meter is pressed into the soil, the spring, which is proportional to the resistance encountered by the probe, is correspondingly compressed, thereby determining the soil's compaction level. The test results are typically expressed as pressure per unit area and are used to assess whether the soil is overly compacted or too loose.
Soil firmness refers to the soil resistance equivalent to the vertical pressure when a piston (or cone) is inserted into the soil, also known as penetration resistance, and is typically measured using a soil firmness meter (hardness meter). The measured values for the same method are primarily determined by soil texture, bulk density, and moisture content, with moisture content having the greatest influence. Soil firmness can predict soil bearing capacity, tillability, and resistance to root growth.
Applications include:
1. Assessing soil structure: By measuring soil hardness, one can understand the structural condition of the soil, providing a basis for rational planting, scientific irrigation, and soil health management.
2. Optimizing agricultural practices: It helps assess the operational resistance of agricultural machinery in the soil, guiding timely plowing, harrowing, and other agricultural activities to avoid difficulties in sowing and mechanical damage caused by overly compacted or loose soil.
3. Monitoring farmland tillability: Regular measurements of soil firmness can determine the tillability of farmland, guiding agricultural production.
Automatically stores travel distance, travel distance (1-480) mm adjustable (accuracy: 1 mm).
Touchscreen display with real-time recording of measurement curves.
Selectable time zone with switchable Chinese and English language options.
Convenient data storage with capacity for 8,000 data points.
Data upload functionality via USB interface for connection to a computer.
Display | 2.8-inch color TFT LCD touchscreen | |
Standards | LYT1223-1999 Determination of Forest Soil Firmness | |
Interfaces | Type-C connector: Charging USB port: USB drive aviation connector: RS485 | |
Storage | High-capacity FLASH memory; Can store 8,000 data points | |
Positioning | GPS/BD/GLONASS | |
Data Transmission | 2G/3G/4G/ Wi-Fi | |
Battery | 12V 3000mAh lithium battery (operating time: 10 hours; Charging time: 3 hours) | |
Export | USB drive, export to Excel spreadsheet | |
Unit | kg/cm²; N/cm²; kPa; Bar; Psi | |
Travel | 480 mm, accuracy 0.01 mm | |
Soil Compaction Sensor | Range | 0~100 kg |
Sensitivity | 2.0 ± 0.1 mV/V | |
Accuracy | 0.1% F.S. | |
Repeatability | ±0.05% F.S. | |
Operating Temperature | -20 to +70°C | |
Material | Stainless steel | |
USB cable | USB-C cable (1m) | |
USB drive export | 1GB | |
Handle | 120mm, aluminum alloy | |
Probe | Φ9mm × 500mm (effective length: 480mm) | |
Device dimensions | Φ160 × 820mm | |
Instrument case | 880mm × 245mm × 220mm (approx. 9.6kg) | |
Net weight | Approx. 17.5kg |