Hazardous-area tank installations need level switching that combines mechanical robustness with certified explosion protection. This instrument is used to control liquids or fuel in underground and outdoor tanks where flammable products are treated. It is certified CESI 03 ATEX 272 Ext.2 II 1/2G Exdb IIC T5/T6 Ga/Gb and provides a minimum ingress protection (IP) rating of IP67.
The measuring principle keeps the design straightforward. One or more floats move by buoyancy along the AISI 316 measuring rod and actuate magnetic reed contacts inside it, leaving the float as the only moving element. The range supports up to 6 switch points, rod lengths up to 6 m and working pressure up to 50 bar, depending on the selected float.
Installation can be matched to the tank and control layout with threaded or flanged process connections. Electrical outputs include IP66/67 housings in epoxy-painted aluminum or AISI 316 stainless steel, each with up to 18 terminals. Temperature sensor options are available on request.
One or more floats actuate reed contacts placed inside the AISI 316 measuring rod. Contact types include SPST and SPDT versions.
AISI 316 float options are available in several sizes, with defined specific gravity, contact type, pressure rating and temperature class.
External installation is supported with threaded and flanged connections. Thread options include UNI 228/1, UNI 7/1 and NPT.
Contact versions are specified with AC and DC voltage, current and power ratings for each SPST or SPDT type.
Contacts can be wired independently, with a common connection or according to request. NO, NC and SPDT contact status options are listed.
A sensor can be installed at the bottom of the rod on request. Options include PT100, PT1000, PTC, NTC and TRP thermoprotector versions
