Hach CL17 Chlorine Analyzer

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The Hach CL17 Chlorine Analyzer uses colorimetric DPD chemistry to continuously monitor water for free or total
residual chlorine. This CL17 is a dependable and economical alternative to instruments that rely on costly
electrodes or complex procedures. The analysis method is unaffected by even large swings of pH and measurements
are more accurate and precise than those of other systems.
Description

Features and Benefits

 

Reliable and Economical Chlorine Analysis
The Hach CL17 Chlorine Analyzer uses colorimetric DPD chemistry to continuously monitor water for free or total
residual chlorine. This CL17 is a dependable and economical alternative to instruments that rely on costly
electrodes or complex procedures. The analysis method is unaffected by even large swings of pH and measurements
are more accurate and precise than those of other systems.

 


Manual or Automatic Feed Pump Control
Both an alarm for manual chlorine feed control and a 4-20 mA output for automatic control of chlorine feed pumps is
available in the CL17 Analyzer. When set for manual control, the instrument notifies the operator of out-of-limit chlorine
levels for manual intervention in the disinfection process as needed. For automatic control of chlorine feed pumps, the
CL17 can use one of two methods: 

 

  1. On-Off Control turns the feed pumps on when chlorine levels fall too low for disinfection and off when levels rise above a pre-set limit.
  2. Proportional Control adjusts the amount of chlorine in proportion to the strength of the CL17’s output signal

 


Simple Maintenance 

 

Routine maintenance can typically be performed in 15 minutes per month because the sample cell and reaction chamber are 

easy to clean and the case provides quick access. (Difficult samples may require more frequent cleaning.) The CL17 is also 

equipped with self-testing diagnostics.

 

 Applications

 Drinking Water - The CL17 Chlorine Analyzer can be used in finished water where residual chlorine levels must be 

maintained during distribution. it can also be used to monitor raw water to facilitate preoxidation, disinfection, and control 

of taste and odor problems.

 

Wastewater - Large tubing and fittings and a self-cleaning By-Pass Y-Strainer Kit for the CL17 ensures continous operation 

without clogging.

Industrial - The CL17 can be used to monitor disinfection and prevent biological build-up in applications that involve
chemical or industrial processes (feed water), heating and cooling water, or food and beverage applications. It is also
useful in systems that use reverse osmosis, to protect expensive cellulose acetate membranes.