Developed with advanced ion selective electrode (ISE) sensor technology and a highly intelligent transmitter, the family of Hydra-DS Analyzers from Electro-Chemical Devices simplifies the accurate measurement of harmful nitrogen (nutrients) and ammonium to maintain water quality in a wide range of environments. The intelligent transmitter also includes an easy-to-read backlit display and comes with two 4-20mA outlets and three SPDT alarm relays. An integral automated sensor spray cleaner reduces biofilms to reduce sensor maintenance. For more information, visit