Study on Electrical Moisture Meter for Grain of RC-Relaxation. Oscillation Circuit

Abstract

The Electrical Moister Meter for grain of RC-relaxation oscillation circuit is constructed with a tubular condenser (Capacity 0.1μF) and a neon glow discharge tube, and need not use an ammeter and a voltmeter so that it is very simple, stable and handy.
I took paddy and rough rice as a materials for study and calibrated in comparison with the absolute drying method (105°C 8 days).
The results of the laboratory work is as fallows-This Electrical Moisture Meter, as a rule, has accuracy of ±0.5 percent.
The possible range to use is 11-19 percent (WB) in moisture content grain.
It is free to use for electric sourcer either DC or AC within 100-200V. DC, 60-125V. AC.