Dwyer Instruments SBLT2 series submersible level transmitters offer trouble free service in the harshest applications. Measurements reference the height of liquid above the transmitter position in the tank to atmospheric pressure. The transmitter consists of a piezoresistive sensing element, encased in a 316 stainless steel housing. The SBLT2 incorporates lightning and surge protection dual arrestor technology, eliminating both power supply surges and lightning ground strike transients.