Entech Design, Inc.s Expansion Pro Analyzer (EPA 2000″) is an application-specific instrument that employs highly effective underwater acoustic sensing technology to measure media expansion in granular media filters. The unit also monitors media levels between backwash cycles (i.e., while the filter is in service). Measurement range is one to seven feet from the sensor and accuracy is 0.1 inch. Power requirements are 110/220 VAC, 50/60 Hz, 15 watts. Features include multi-function LCD and operator control panel. http://firstname.lastname@example.org
Entech Design, Inc.