公开(公告)号：US3769581A

公开(公告)日：1973-10-30

申请号：US3769581D

申请日：1971-10-14

申请人： KONIG F ,  KONIG K

发明人： KONIG F ,  KONIG K

IPC分类号： G01N33/24 ,  G01R27/02 ,  G01V3/06

CPC分类号： G01V3/06 ,  G01N33/24 ,  G01R27/02

摘要： Apparatus for measuring the dry unit weight of a soil, either directly or with reference to a known soil variable (e.g., the Proctor density) by means of a measuring probe containing two electrodes in the soil under investigation. The measuring probe is energized with a constant a.c., voltage, and is connected in series to a measuring resistance at which a voltage drop occurs proportional to probe current (I). The voltage tapped at measuring resistance overlaps a continuously adjustable part of the said constant a.c. voltage, and, in a phase-sensitive rectifying indicating device, a proportion, continuously adjustable from zero, of the sum voltage obtained by the superposition is superposed on a second component, continuously adjustable from zero, of the constant a.c. voltage.

摘要翻译： 用于通过在被调查的土壤中含有两个电极的测量探针直接或参照已知土壤变量（例如，Proctor密度）来测量土壤干燥单位重量的装置。 测量探头以恒定的交流电压通电，并串联连接到与探头电流（I）成比例的电压降的测量电阻。 在测量电阻上敲击的电压与所述恒定交流电的连续可调部分重叠。 电压，并且在相敏整流指示装置中，通过叠加获得的和电压的从0连续可调的比例叠加在恒定交流电压上从0连续调节的第二分量上。 电压。