Series CL7685 Chlorine Residual Analyzers

  • Continuous on-line operation.
  • High-reliability.
  • Field-proven.
  • Multiple Ranges – up to 20 PPM.
  • High & Low Alarm Variable set points.
  • Automatic Cleaning System.
  • Direct Display of Free Chlorine.
  • High Accuracy Low Level Readings.

Capital Controls Free Chlorine Residual Analyzer has been independently tested and proven to be a reliable analyzer for continuous, accurate residual analysis.

The potentiostatic-based amperometric instrument is designed to continuously analyze free chlorine in water, wastewater, cooling water and other process water applications.

The analyzer sample is gravity fed, eliminating the need for a sample pump. CL 7685 features a factory set monitoring ranges from 0-2 to 0-20 PPM which are easily field settable through the Analyzers Microprocessor settings. The Analyzer incorporates an electrode cleaning system which eliminates signal drift and the need for frequent calibration. Internal high & low set points are standard. The analyzer has an inbuilt temperature compensation mechanism, thereby providing consistent residual values.

The analyzer is constructed of corrosion-resistant materials. Each unit is pre-piped, pre-wired and factory tested and requires no field wiring; only field connections to the service point is required.

The entire electronics are protected with a NEMA 4 (IP-65) enclosure. All components and controls are easily accessible from the front of the unit to permit ease of observation of sample flow, electrode cleaning system and adjustment of set points.

Design Features
  • No Reagents: CL7685 reagent less analyzer is ideal for the conditions and applications listed.

  • High & Low alarm Set points: Monitor and control free chlorine within a concentration band with high and low alarm set points that are easily adjusted on the front panel. LED lights indicate that alarm has occurred.

  • Automatic Cleaning: A continuous direct cleaning system maintains a constant level of electrode cleanliness.

  • Accuracy: The 2% accuracy of the unit is ideal for the monitoring and control of most clean water samples.

  • Drinking Water Disinfection: Drinking water requires continuous monitoring of chlorine residuals.

  • Swimming Pool Disinfection: Require low cost accurate monitoring of free Chlorine.

  • Cooling Water Biofouling: Cost effective control of slime and algae in piping, heat exchangers and cooling towers by monitoring free chlorine.

  • Industrial Process Water: Accurate monitoring of residual chlorine in industrial process waters, including seawater.