• Level drop detection in tanks of surface-treating process
• Protection against overheating following evaporation or tank leaking, or default on chemical refilling

A float at the bottom of a stem moves a magnet inside the head housing.
The fluid maintains the equipment (float, stem and magnet) in highest position (normal status).
When the fluid level is going down, the equipment comes in lowest position, down to block on stopper.
The switch BSM changes from normal status to alarm status (BSM: data-sheet 585-01).
To test the complete system, it is sufficient to push down the float to the lowest position or by draining part of the container.
For a safe operating condition it would be better to test regularly the complete system.