Soil compaction meter

Instrument introduction

This device is a set of soil moisture monitoring system composed of a handheld collector and a compaction sensor. It has the advantages of simple operation, easy to carry, rapid and reliable detection, etc., which is unique in the field. The handheld collector can be configured with GPS, GPRS data upload and other functions according to user needs. The data in the device can also be connected to the computer via a USB data cable, and the historical data can be exported to the computer for data analysis.

Soil compaction is also called soil hardness or soil firmness or soil penetration resistance. It is generally expressed by the resistance when a metal plunger or probe is pressed into the soil (in Pa). Soil compaction refers to the ability of soil to resist compaction and crushing by external forces, which is one of the aspects of soil properties. In addition, soil physical properties include soil texture, structure, porosity, etc., involving soil firmness, plasticity, permeability, drainage, water storage capacity, and difficulty of root penetration.

Soil compactness is composed of soil shear resistance, compression force and friction force. It is a composite indicator of soil strength. There are two methods for pressing a metal plunger or probe into the soil: dynamic load and static load. The measured values of different methods are different, but they are related. The shapes of the plunger include cone, flat head, sphere and wedge, which also affect the measured values. The measured values of the same method are mainly determined by soil texture, bulk density and water content. Among them, water content has the greatest impact. Soil compactness can predict soil bearing capacity, tillage and resistance to root extension. The degree of soil compactness can affect the perforation and growth of crop roots. It is an important soil physical property indicator used to evaluate soil tillage. Compacted soil can prevent water infiltration, reduce the utilization rate of fertilizers, affect plant root growth, and lead to crop yield reduction.

Technical parameters

Display: 2.4-inch color TFT LCD

Interface: Power connector: 5.5*2.5/2.1; USB interface: connect to computer; Aviation plug: RS485

Storage: large-capacity FLASH memory; can store 100,000 data; automatic storage: 1S~180S adjustable

Positioning: GPS

GSM upload: GPRS/2G/4G

Battery: 12V 2500mah lithium battery; working time: 10H; charging time: 3H

Export: USB cable connected to computer host computer, export Excel table

Unit: kg/cm²; LB; N/cm²; Kpa

Soil compaction sensor:

Range: 0~100kg

Sensitivity: 2.0±0.1mv/V

Comprehensive accuracy: 0.1%F∙S

Repeatability: ±0.05%F∙S

Working temperature: -20～﹢70℃

Probe material: stainless steel

Input impedance: 735 ±35Ω

Output impedance: 700±3Ω

Nonlinearity: ±0.05 %F∙S

Sealing level: IP66

Excitation voltage: 5~12 VDC

Cable: φ3×2000mm

Configuration list

USB cable male to male cable (1M)

U disk 32M rotating type (including 340 driver and data acquisition software)

Handle 120mm, aluminum alloy

Connecting rod Φ12mm*200mm

Probe Φ12mm*300mm

Aluminum alloy box 300mm*350mm*11mm

Weight 3.2kg

Instruction manual 1 copy

Certificate of conformity/warranty card 1 copy each

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