Chlorine Dioxide Analyzer CD80 - Reagentless

- No Reagents Needed -

- Compliant with EPA Method 334.0 -

- Large water tubing and flow through reduces maintenance -

- Auto Cleaning Option -

The CD80 is a panel mounted, ready to use Chlorine Dioxide Analyzer. It is designed to monitor Chlorine Dioxide in drinking water, rinse water, cooling water or other
freshwater samples from 0.05 – 20 ppm Chlorine Dioxide as the standard range or 0.01 - 5.00 ppm with the low range sensor. The CD80 is compliant with EPA method 334.0 for measuring drinking water. The CD80 features a plug and play design that incorporates a flow control device, a chlorine dioxide sensor, optional pH sensor and the T80 analyzer/controller conveniently mounted on a PVC panel. Connect the sample and drain lines, connect the power and outputs and it is ready to use. Factory calibrated, calibration is accomplished by DPD comparison. Chlorine Dioxide (ClO2) exists as a gas in solution, it does not dissolve like other chlorine compounds and is therefore not affected 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. Chlorine Dioxide diffuses through the PTFE
membrane of the sensor and is reduced to chloride ion by the addition of electrons from the cathode. Silver from the anode is then oxidized to silver chloride. The electrons released from the gold cathode and the electrons accepted on the silver anode result in a current flow which is proportional to the chlorine dioxide concentration in the
medium. Temperature affects the ClO2 permeability of the PTFE membrane, increasing the temperature increases the output of the sensor about 4% per C8. The chlorine flow cell includes a temperature sensor that allows the T80 analyzer to perform automatic temperature compensation of the measurement The T80 is 110-240 VAC or 24 VDC powered and allows either parameter to be graphically displayed with user defined Line, Bar or Guage style graphs. The standard configura0on has (2) 4-20 mA outputs, (3) alarm relays and MODBUS RTU. Amperometric chlorine sensors are flow sensi0ve, the
minimum required flow by the sensor is 0.5 ft/sec, above this value the output is virtually flow independent. A “Constant head” Flow control Device (CFD)maintains the optimum flow past the sensor over a wide range of incoming sample flow rates. The minimum flow required for the CFD is 10 gal/hr. and the maximum flow is 80 gal/hr. with the sample going to drain at atmospheric pressure.
The Auto Clean option includes a solenoid actuated spray cleaner that uses either 30 psi process water or air. An easily adjusted 0mer controls the period and dura0on of the cleaning cycle.

Questions? Please Call Us (714) 584-9846