Model Q45N Dissolved NH3 Monitor

Wastewater Treatment Potable Water Treatment River and Stream Water Quality Refrigeration Chillers Continuous monitoring of ammonia in water and wastewater streams is becoming increasingly important for plant operations and process control. Unfortunately, on-line ammonia monitors are generally very expensive, complex, and labor intensive instruments. Most are automated versions of ammonia selective ion electrode methods better suited to laboratory measurements. Others are automated colorimetric devices or instrumental methods that are difficult to justify on a cost basis. ATl has developed a...

Chloramination Process Monitoring Free Ammonia Output (4–20mA) Chloramine Sensor Chloramination is increasingly being used in potable water systems to limit THM formation and insure disinfection in large distribution systems. Proper control of this process requires the addition of sufficient ammonia to insure that only monochloramine is formed while limiting the amount of excess ammonia to a minimum. An enhanced version of the Q45N Dissolved Ammonia Monitor is available that provides an excellent tool for monitoring the chloramination process. This system employs two separate sensors, the first...

Model Q45N Specifications Measurement: Optional: Sensor Type: Range: Ammonia: Monochloramine: Response Time: Accuracy: Sensitivity: Zero Stability: Electronic Linearity: Span Drift: Zero Drift: Analog Output: Total ammonia (as NH3 - N) Free Ammonia (as NH3) and Monochloramine Amperometric membraned cell 0-2.000 PPM minimum, 0-20.00 PPM Maximum 0-10.00 PPM 90% in 120 seconds ± 0.1 PPM or 2% of full scale 0.05 PPM minimum ± 0.02 PPM per week ± 0.5% Generally less than 5% per month (application dependent) ± 0.03 PPM Two isolated 4-20 mA, 575 ohms max. Ordering Information: Q45N-A-B-C Dissolved Ammonia...