Introduction of an Auto-circuit in Magnetic Float Densitometer using Semiconductor Devices

In the present modified version of magnetic float densitometer, an auto-circuit, comprising of 12V auto-on and 1.5V auto-off device, having a time delay of about 20 and 10 sec. respectively, is incorporated to regulate the electric currents in the solenoids. The currents in the main and pull down solenoids are simultaneously controlled by one switch only. This makes the magnetic float densitometer easy operating without affecting the mathematical working of the instrument.