New Plumb-and-Play Chlorine Dioxide Analyzer Simplifies Water Monitoring and Treatment. Ideal For Drinking Water, Wastewater, Rinse Water And Cooling Water.
The monitoring and control of Chlorine Dioxide (CIO2) has never been easier or more economical than with the new CDA-22 Chlorine Dioxide Analyzer from Electro-Chemical Devices, Inc., featuring a panel mounted plumb-and-play design and automatic flow control in a low-maintenance complete measurement system.
The CDA-22 is designed to measure Chlorine Dioxide in concentrations ranging from 0.05-20 ppm CIO2. It is ideal for application in municipal water systems, industrial cooling and rinse water, wastewater or other fresh water samples.
CIO2 exists as a gas in solution; it does not dissolve like other chlorine compounds and is therefore unaffected by the pH of the solution. CIO2 is approximately 10 times more soluble than Chlorine in water, but it is extremely volatile and can be easily removed from dilute aqueous solutions with minimal aeration.
Easy to install and maintain, the CDA-22 incorporates a CIO2 sensor, automated flow control device and analyzer/controller mounted on a PVC panel. Installation is complete after connecting the sample and drain lines, power and outputs. The low-maintenance CDA-22 can run for up to one year between electrolyte/membrane changes. Calibration of the CDA-22 is accomplished with DPD comparison.
The CDA-22 is built with a polarographic gold/silver PTFE membrane amperometric CIO2 sensor. While these types of sensors are flow sensitive, the CDA-22’s output is virtually flow independent at values greater than 0.5 ft/sec. The CDA-22’s “constant head” flow control device maintains the sensor’s optimum flow over a wide range of incoming sample flow rates, from 10-80 gal/hr.
The CDA-22’s sensor operates at a wide temperature range of 0 to 100ºC (32 to 212ºF). Because temperature affects the CIO2 permeability of the PTFE membrane, increasing the temperature increases the output of the sensor about 4% per Cº. The chlorine flow cell includes a temperature sensor that allows the C22 analyzer to perform automatic temperature compensation of the measurement.
The CDA-22 requires no expensive reagents and eliminates pressure regulators and rotometers. It features a 2.5-x1.75-inch backlit LCD display, with 4 lines for text and graphics. The CDA-22 offers dual measurements, an XY graphical plot and an optional PID Control Output. The analyzer provides a 4-20 mA output proportional to the Chlorine Dioxide measured and two alarm relays SPDT 230 VAC/5A or 30 VDC/5A resistive max. It features the options to include additional 4-20 mA outputs for pH or temperature and up to 6 additional relays.