Press Release Summary:
Model CDA-22 Chlorine Dioxide Analyzer measures ClO2 in concentrations ranging from 0.05-20 ppm. System incorporates PTFE membrane amperometric ClO2 sensor with 32-212ÂºF operating temperature range, automated flow control device, and analyzer/controller mounted on PVC panel. Low-maintenance unit can run for up to 1 yr between electrolyte/membrane changes. Providing dual measurements and XY graphical plot, device has 4-20 mA output proportional to ClO2 measured.
Original Press Release:
New Plumb-and-Play Chlorine Dioxide Analyzer Simplifies Water Monitoring and Treatment
Ideal For Drinking Water, Wastewater, Rinse Water And Cooling Water
Yorba Linda, CA - The monitoring and control of Chlorine Dioxide (ClO2) 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 ClO2. It is ideal for application in municipal water systems, industrial cooling and rinse water, wastewater or other fresh water samples.
ClO2 exists as a gas in solution; it does not dissolve like other chlorine compounds and is therefore unaffected by the pH of the solution. ClO2 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 ClO2 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 ClO2 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 ClO2 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.
About Electro-Chemical Devices
Electro-Chemical Devices (ECD) is a manufacturer of liquid analytical process instrumentation. Founded in 1977, ECD has been in business for over 30 years and has built its industry leading reputation by its commitment to customers through this basic approach: Provide quality products, develop technical innovations and provide responsive, knowledgeable service.