Vapour Seal Type Magnetic Level Indicator
With rising liquid level in the tank, the float rises up taking the magnetic counterweight in the enclosure down. The counter weight being magnetic in nature couples with the indicator (red coloured) which moves in the glass tube and can be easily read against the calibrated scale to indicate the liquid level in the tank. This instrument being completely sealed and indicator mechanism being isolated from the moving parts, magnetically, it ensures complete sealing and prevents loss of pressure or vapour.