scholarly journals Rapid Moisture Content Determination of Macadamia Nuts with an Electronic Moisture Meter

1992 ◽  
Vol 2 (4) ◽  
pp. 471-473
Author(s):  
Marcel M.C. Tsang ◽  
Jack K. Fujii
Keyword(s):  
Moisture Content ◽  
Rapid Determination ◽  
Moisture Analysis ◽  
Moisture Meter ◽  
Wet Weight ◽  
Rapid Moisture ◽  
Macadamia Nuts ◽  
Forced Air ◽  
Moisture Content Determination

An electronic moisture meter (Dole Model 400) was calibrated for rapid determination of moisture content of macadamia (Macadamia integrifolia Maiden and Betche) nuts. The meter was found suitable to measure the moisture content (from 9.5% to 21.5% on a wet-weight basis) of macadamia nuts with sufficient accuracy for routine use by farmers and processors. On average, the meter readings were about 0.21% ± 0.08% se lower compared to readings obtained from the standard forced-air oven technique. A moisture analysis with the meter required <5 minutes compared to 72 hours by conventional oven-drying.

scholarly journals Precision and accuracy in moisture content determination of wood fuel chips using a handheld electric capacitance moisture meter

Silva Fennica ◽  
2018 ◽  
Vol 52 (5) ◽  
Author(s):  
Lars Fridh ◽  
Lars Eliasson ◽  
Dan Bergström
Keyword(s):  
Moisture Content ◽  
Calibration Function ◽  
Drying Method ◽  
Oven Drying ◽  
Content Determination ◽  
Accuracy And Precision ◽  
Moisture Meter ◽  
Capacitance Meter ◽  
Moisture Content Determination

According to the Swedish Timber Measurement Act, measurements affecting payments for wood fuels to landowners must be accurate and precise. In this regard, moisture content is an important quality parameter for wood chips which influences the net calorific value as received and thus the economic value. As standard practice moisture content is determined with the oven-drying method, which is cumbersome to use for deliveries to facilities without drying-ovens, which in turn necessitates that samples are taken elsewhere for measurement. An alternative solution is to use a portable moisture meter. Our aim was to evaluate the precision of a handheld capacitance moisture meter. Accuracy and precision of a capacitance meter was determined in the lab and a calibration function was made. Thereafter, the calibrated moisture meter was compared with the standard method for moisture content determination of truckloads of chips. The capacitance meter showed a moderate accuracy by underestimating moisture content by 6.0 percentage points (pp), compared to the reference method, at a precision of ±3.8 pp (CI 95%). For chips with M > 50%, both accuracy and precision decreased. Calibration increased the accuracy in the follow up study by 3 pp for chips with M < 50% but could not be made for wetter chips. The oven-drying method and the capacitance meter can provide equally accurate estimates of mean moisture content for chips with M < 50% if a larger sample is taken with the latter. It should be possible to use capacitance meters to measure moisture content even when used to calculate payments depending of the needed accuracy. A calibration function for each assortment is needed.

scholarly journals Steel-shot method for measuring the density of soils

2010 ◽  
Vol 47 (11) ◽  
pp. 1299-1304 ◽  
Author(s):  
Reed B. Freeman ◽  
Chad A. Gartrell ◽  
Lillian D. Wakeley ◽  
Ernest S. Berney ◽  
Julie R. Kelley
Keyword(s):  
Moisture Content ◽  
Rapid Determination ◽  
Content Volume ◽  
Test Method ◽  
Unit Weight ◽  
Soil Density ◽  
Engineering Construction ◽  
Steel Shot ◽  
Time Requirements

The density of soil is crucial in engineering, construction, and research. Standard methods to determine density use procedures, equipment or expendable materials that limit their effectiveness in challenging field conditions. Some methods require burdensome logistics or have time requirements that limit their use or the number of tests that can be executed. A test method, similar to the sand-cone method, was developed that uses steel shot as the material to which a volume of soil is compared to calculate soil density. Steel shot is easily recovered and reused, eliminating the need for specialty sand and calibrated cones or containers, and allows rapid determination of the volume of displaced soil. Excavated soil also provides measurements of total mass and moisture content. Volume, mass, and moisture content are applied in simple calculations to determine wet and dry densities and unit weight of the soil. Proficiency in performing the test can be achieved with minimal training, and the required kit can be assembled for a reasonable cost. Field uses of the method in dry environments in a variety of soil types demonstrated that the method can produce repeatable results within 2% of the values of soil density determined by traditional methods, with advantages in logistics.

Determination of readiness for laying based on material moisture, corresponding relative humidity, and water release

2020 ◽  
Vol 62 (10) ◽  
pp. 1033-1040
Author(s):  
Christoph Strangfeld ◽  
Sabine Kruschwitz
Keyword(s):  
Relative Humidity ◽  
Moisture Content ◽  
Embedded Sensors ◽  
Residual Water ◽  
Floor Covering ◽  
Water Release ◽  
Content Determination ◽  
Two Samples ◽  
Moisture Content Determination

Abstract The moisture content of the subfloor has to be determined before installation to avoid damage to the floor covering. Only if readiness for layering is reached, can an installation without damage be expected in all cases. In general, three approaches exist to measure residual water content: determination of moisture content, determination of water release, or determination of the corresponding relative humidity. All three approaches are tested under laboratory conditions at eight screed types including two samples thicknesses in each case. Moisture content and water release are measured by sample weighing, the corresponding relative humidity is measured by embedded sensors. All three approaches are compared and correlated. The evaluations show only a weak correlation and, in several cases, contradicting results. Samples are considered ready for layering and not ready for layering at the same time, depending on the chosen approach. Due to these contradicting results, a general threshold for a risk of damage cannot be derived based on these measurements. Furthermore, the experiment demonstrates that the measurement of corresponding relative humidity is independent of the screed type or screed composition considered. This makes humidity measurement a potentially very promising approach for the installation of material moisture monitoring systems.

RAPID DETERMINATION OF SEED GERMINATION POTENTIAL TO MEASURE QUALITY LOSS IN STORED WHEAT

1982 ◽  
Vol 62 (4) ◽  
pp. 1045-1048 ◽  
Author(s):  
N. D. G. WHITE ◽  
R. N. SINHA ◽  
W. E. MUIR
Keyword(s):  
Seed Germination ◽  
Moisture Content ◽  
Rapid Method ◽  
Rapid Determination ◽  
Quality Loss ◽  
Wheat Seed ◽  
Stored Wheat ◽  
Germination Potential

A rapid method of determining wheat seed germination after 1 day (G1) of incubation was found. Germination of wheat seed stored at [Formula: see text] moisture content is estimated by adding 12% to G1; at <17% moisture content germination is not consistently predicted by G1.

scholarly journals Rapid determination of meat moisture content using radio-frequency dielectric measurement

IEEE Access ◽  
2018 ◽  
pp. 1-1 ◽  
Author(s):  
Jianxu Wang ◽  
Lifeng Fan ◽  
Qiao Zhou ◽  
Jinhai Li ◽  
Pengfei Zhao ◽  
...  
Keyword(s):  
Moisture Content ◽  
Radio Frequency ◽  
Rapid Determination ◽  
Dielectric Measurement

RAPID DETERMINATION OF THE MOISTURE CONTENT OF SOILS

Science ◽  
1926 ◽  
Vol 64 (1670) ◽  
pp. 651-652 ◽  
Author(s):  
G. J. Bouyoucos
Keyword(s):  
Moisture Content ◽  
Rapid Determination
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