For the ultimate in hard-wearing and durable float level products for pump control, ATMI's ATEX certified SOBA EX Float Level Regulator is one of the best products you will find.
Designed for use in explosive gas areas, the device is suitable for keeping solvents, hydrocarbons, chemicals, alcohols and pharmaceutical products in check. SOBA EX is an ATEX certified float switch ideal for hazardous environments 0, 1, 2 (gas) and 20, 21, 22 (dust). As the liquid level reaches the float, the mechanical switch inside the float will tilt, thus closing or opening a circuit connected to an electrical panel.
The SOBA EX is equipped with an external adjustable resin ballast, and its +/-25º switching angle ensures a precise level measurement. It has gold-plated reverser contacts and can withstand four bar of pressure.
For more information about SOBA EX - Float Level Regulator, download the following datasheets: