Dual-electrode Nitrite Analysis
 Well-suited for use in municipal wastewater treatment plants, the sensor
 uses two electrodes to determine the NO3-N concentration: a nitrate ion
 electrode and a chloride ion electrode. An optional electrode is also 
available for pH measurement. The system’s Hydra Analyzer is configured 
to periodically actuate a cleaning cycle using the integral spray 
cleaner in the nitrate sensor, minimizing the formation of biofilms or 
other coatings on the electrodes and keeping maintenance to a minimum. 
The sensor also detects temperature, and the analyzer provides a 
temperature-compensation calculation for superior measurement accuracy. 
The Hydra Nitrate Analyzer System measures nitrate and chloride in 
concentrations from 0.1 to 1000ppm, pH from 0 to 14 and temperature from
 0 to 50°C (32 to 122°F).Electro-Chemical Devices Inc. www.ecdi.com800.729.1333 

