Measuring and testing – Moisture content or absorption characteristic of material – By desiccation or extraction
Patent
1977-10-17
1979-03-06
Petrakes, John
Measuring and testing
Moisture content or absorption characteristic of material
By desiccation or extraction
G01N 504, G01N 2556
Patent
active
041424034
ABSTRACT:
An apparatus for testing soils by measuring the rate of moisture loss from soil or sediment samples is disclosed, comprising a test chamber, a fan, a heater-thermostat, a chilled water humidity control device, an automatic balance scale connected to a continuous chart recorder, a shield around the balance pan, and a magnetic damper for the balance pan. The heater-thermostat maintains a constant temperature within the chamber, while the chilled water humidity control device maintains a constant relative humidity. The fan circulates air in the chamber, and the magnetic damper and shield around the balance pan allows the soil sample to be weighed without air currents causing the balance pan to vibrate. The balance scale continually weighs the sample, with the weight being recorded on the chart recorder, thus providing a record of the rate of moisture loss. A bell jar allows the testing to be done under vacuum conditions.
The method of this invention comprises the steps of:
REFERENCES:
patent: 1089826 (1914-03-01), Emerson
patent: 2047765 (1936-07-01), Brabender
patent: 2709914 (1955-06-01), Brabender et al.
patent: 2832215 (1958-04-01), Brabender
patent: 3055206 (1962-09-01), Watson et al.
patent: 3074270 (1963-01-01), Rabb
patent: 3084537 (1963-04-01), Shipstead et al.
patent: 3145562 (1964-08-01), Hamilton et al.
patent: 3463000 (1969-08-01), Broadwin
patent: 3605501 (1971-09-01), Chenevert
patent: 3813918 (1974-06-01), Moe
Welch; "Quick-Answer Soil Moisture"; Soil-Test Technical Information; Bulletin C-140-64; Mar. 1964, pp. 1-6.
Demirel Turgut
Lohnes Robert A.
Iowa State University & Research Foundation, Inc.
Petrakes John
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