scholarly journals Parallel-plate capacitance sensor for nondestructive measurement of moisture content of different types of wheat

2012 ◽  
Author(s):  
Chari V. Kandala ◽  
Naveen Puppala
Keyword(s):  
Moisture Content ◽  
Parallel Plate ◽  
Capacitance Sensor ◽  
Nondestructive Measurement ◽  
Different Types

scholarly journals Geoelectric method applied in correlation between physical characteristics and electrical properties of the soil

2017 ◽  
Vol 2 (2) ◽  
pp. 37 ◽  
Author(s):  
Antonio Marcelino Silva Filho ◽  
Carlos Leandro Borges Silva ◽  
Marco Antonio Assfalk Oliveira ◽  
Thyago Gumeratto Pires ◽  
Aylton José Alves ◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
Soil Moisture ◽  
Electrical Properties ◽  
Moisture Content ◽  
Soil Compaction ◽  
Clay Content ◽  
Physical Characteristics ◽  
Soil Dynamics ◽  
Different Types ◽  
The Relationship

This paper presents the study of the relationship between electrical properties and physical characteristics of the soil. Measures of apparent electrical resistivity of the soil were made for different types of soil, varying moisture content gradually while maintaining a constant compaction, and then varying the compaction and relating it to a constant humidity. Development of a correlation surface is proposed in order to identify granulometry of the soil from moisture and compaction measurements. For the study of spatial variability, two areas were chosen to allow the change of moisture content and compaction in order to verify the measurement capacity of apparent electrical resistivity of the soil as methodology to identify change in soil dynamics. Results obtained show correlations among apparent electrical resistivity of the soil, moisture, soil compaction and clay content.

Analysis of Wood’s Capacitance Characteristic to its Hardness

2015 ◽  
Vol 771 ◽  
pp. 161-164
Author(s):  
Mufti Esofita ◽  
Mitra Djamal ◽  
Warsito P. Taruno ◽  
Mahfudz Al Huda ◽  
Marlin Baidillah ◽  
...  
Keyword(s):  
Moisture Content ◽  
Forest Plantation ◽  
Parallel Plates ◽  
Capacitance Sensor ◽  
Paraserianthes Falcataria ◽  
Fast Growing ◽  
Measurement Results ◽  
Good Relation

A capacitance sensor has been designed to investigate the correlation between wood capacitance value, Janka hardness rating and density. The sensor was developed based on parallel plates using copper as the electrodes. Capacitance values were measured using CV-circuit, 20 Vp-p, 2.5 MHz. Five wood specimens from forest plantation that is Karet (Hevea brasiliensis), Pulai (Alstonia sp.), Pinus (Pinus mercusii), Sengon (Paraserianthes falcataria), and fast growing teak (Tectona grandis) were tested. Each specimen was measured in tangential and radial directions under 0% moisture content conditions. The designed sensor was capable to distinguish the capacitance values in tangential and radial directions. The measurement results showed that wood capacitance value has a good relation with wood’s hardness and density.

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