The Levelgage general-purpose level transmitter for wastewater level measurement from Keller America is a low-cost alternative for applications for which traditional instruments are too much. It is constructed of durable 316L stainless steel to resist corrosion, provides industry-standard analog output signals for easy integration into existing systems, and is built to order in three business days or less to keep downtime to a minimum. It is built with a 4-20mA output, and includes lightning protection at no additional cost. 877/253-5537; www.kelleramerica.com; Booth #508.