Toxicity analyzer EZ7900

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Online, automatic respirometry for early warning of toxicity in wastewater treatment plants Early Warning System against calamities The EZ7900 Online Toxicity Analyser is able to detect and measure waste water streams that present an acute or chronic toxicity to the biomass of a water treatment plant. This allows operators to take corrective measures to protect the viability of the activated sludge. Representative measurements on fresh sludge Measurements are carried out on real sludge freshly sampled from the treatment plant by means of a self-cleaning sampling-filtration system (option). This unique approach has the following advantages: dynamic changes in biomass viability are immediately detected, while sample temperature and pH in the analysis vessel reflects those of the treatment plant. The EZ7900 Series combine a unique, field-proven respirometric analyser design with a robust sampling-filtration system, assuring detection of toxic compounds or shock loads in an early stage: - Detection of acute and chronic toxicity on activated sludge - Measurement of the respiration rate by means of a single dissolved oxygen (DO) sensor - Smart automatic features - Standard 4 - 20 mA signal output with alarm processing - Communication ports supporting connectivity to Modbus - Multiple stream analysis Specifications Technical Attributes Alarm - 1 x malfunctioning, 4 x user-configurable, max. 24 VDC/0.5 A, potential free contacts Ambient temperature - 10 - 30 °C ±4 °C deviation at 5 - 95% relative humidity (non-condensing) Analogue outputs - Active 4 - 20 mA max. 500 Ohm load, standard 1, max. 8 (option) Automatic cleaning - Yes