... , DO, feed, foam and etc. It possesses functions of digital setting, quick validation, data display, data storage, data print, ... It has auto alarm function; 4. DO sensor and signal transmission line.. 3 Foam control 1.Automatically control and ... height . 5 Temp. control 1. PID fully digitization signal processing, digitization control settings 2. Circulating water automatically control temperature 3 ...