 TransTech’s Soil Density Gauge (SDG) utilizes state of the art technology to get accurate soil density readings.
It’s primary features are: - No special license or radioactive materials required
- Lightweight and easy to use
- 12 hours of portable operation
- Measures density in common units (pcf or kg/m3)
- Measures percent moisture
- Stores volumes of readings on internal data logger
- Data download via USB flash drive (semicolon delimited text file format)
Measurement Technology:
Using Electrical Impedance Spectroscopy (EIS) the SDG’s measurement permits separation of the effects of density and moisture content on the response of the soil to electromagnetic probing. The density or compaction level is measured by the response of the SDG’s electrical sensing field to changes in electrical impedance of the material matrix. Since the dielectric constant of air is much lower than that of the other soil constituents, as density/compaction increases, the combined dielectric constant increases because the percentage of air in the soil matrix decreases. The SDG performs a calculation on the measurement data that enables the device to report the soil’s density and moisture content.
Product Brochure for SDG 200 | 
