Scope of application: The density of compaction materials humidity; Buildings carry and filer; underpass, basement and foundation; Backfill the ditch rubbish. Operating principle: Soil non-nuclear density spectrometer through between the high frequency radio electrode to measure soil compaction material dielectric properties and density. After that, using mathematical algorithms to calculate wet/dry density moisture content and the percentage of the enclosed the compaction temperature detector can also increase the accuracy of the measurement. Features:  It can instead of a nuclear density, measurement method, sand filing method, as well as drying, absolute non-nuclear source. No longer need all kinds of nuclear instruments license. Operator does not need special training/certificate and radiation monitoring. Transportation and storage requires no special requirements. Good interface easy to use, convenient cost-effective, suitable for every researchers used in the group, fast, reliable, deft, firm, accurate and repeatability good real-time readings. Using high quality reliable point-to-point RF technology. 2-3 minutes display measured results. Ensure buildings, Bridges, roads, DAMS and o Usage: In the wild, according to template a hammer to taper electrode or standard block like a cross into soil. In the two tapered standard piece between the bottom four point-to-point measure and average the electrical characteristics  process. Users can choose the metric system of SI units or imperial units show density and humidity value. Javelin insert depth affect the measurement measure directly. In addition, the standard of the taper also affect every hammering and soil in is contact. This machine’s screen can show menus procedures and save measurement results.