Automated system for continuous monitoring and control of the amount of dissolved oxygen in a plurality of marine life farming pools or sewage treatment installations

摘要: An automated control system for maintaining a supply of dissolved oxygen (DO) within given range in each plurality pools treating sewerage, farming fish, or the like, and energizing an alarm (148 FIG. 1) which, when energized, will warn designated persons failure to maintain amout D.O. particular pool with comprising first sensor sensing amount pool, settable indicator (146) detecting, respectively, drops below threshold second threshold, both thresholds being selectively determinable by setting indicator. Also provided is communication link transmitting indicators, responsive dropping energize aerator (258 3) increase above level third level, reaching deactivate sensor, fourth decreasing (148) so that one more can come (FIG. 2) repair cause threshold.