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IP68-protected level sensor
July 1st 2006

E-T-A Circuit Breakers has introduced an IP68-protected, capacitive level sensor that is suitable for monitoring de-ionised water in fuel cells and for monitoring aggressive liquids in the chemical industry.

The robust E-T-A NR260 is able to withstand the extreme pressure and temperature variations experienced in fuel cells. The deionised water that is produced as a waste product in fuel cells must be pumped off regularly and reliably.

The sensor provides Maximum Level monitoring based on a factory pre-set switch point. It provides a short-circuit proof 1A switching output signal within 150ms of the maximum level being reached (2mm). Standard factory settings are for de-ionised and tap water, or for other media upon request. Settings can be adjusted via a programmable interface.

The E-T-A NR260 is made of Hastelloy C4 and stainless steel; the probe is covered by a special enamel layer.

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