WATERLINE CL2 (Chlorine)


Process analyzers for the determination of Chlorine

The WATERLINE CL2 and WATERLINE CHLOR process photometers can be used for the monitoring and control of the chlorine concentration in water. Measurement principle is the photometric determination of chlorine by dosing a special reagent based on N,N-Diethyl-pphenylendiaminsulfat (DPD) to a buffered water sample. The wine-red colour formed as a result of the reaction is detected by a monochromatic photometric detection system. The WATERLINE CL2 determines the concentration of free chlorine or of total chlorine. The WATERLINE CHLOR determines the concentration of free chlorine and of total/bounded chlorine. The analyzers consist of a control unit with touchscreen and an analysis unit with measuring chamber, valve, dosing pumps and all required tube connections. The control unit includes a microprocessor which controls the automatic measurement incl. sampling, rinsing, reagent dosing and surveillance of the photodetection system. Main applications for the photometers are the monitoring of the chlorine concentration in drinking water, cooling water and swimming pool water.

  • Automatic measurement incl. self test and drift compensation
  • Easy operation via touchscreen
  • Adjustable limit value and alarm value
  • Programmable analog output (0/4-20 mA, AQUACON CHLOR has 2 analog outputs)
  • Optional: USB port for easy data storage
  • Optional: data transfer via wireless network
  • Adjustable break time between two analysis
  • External start/stop of an analysis possible
  • No external calibration required
  • External plug connections (IP65) for alarm relay, limit relay, analysis relay, external start/stop, analog output 0/4-20 mA
  • Multi range power supply (110–230 Volt, 50–60 Hz)
  • Including polycarbonate wall cabinet
Parameter Chlorine (free and or total/bounded)
Description Automatic microprocessor controlled analyzer for the photometric determination of Chlorine
Typical Applications Control of chlorination plants (drinking water, pools, cooling water)
Analysis Method: Photometric determination of Chlorine (DPD method)
Measuring Range 0,02 – 2,00 ppm Cl2
(free or total)
0,02 – 2,00 ppm Cl2 (free)
0,02 – 2,00 ppm Cl2
(total or bounded)
Resolution 0,01 ppm
Accuracy 2 % of end value
Reproducibility 1 % of end value
Zero-point Stability automatic adjustment
Number of Samples 1
Operating Pressure0,1 - 10 bar
Temperature5 - 30 °C
Sample Volume25 ml per analysis (excluding rinsing)
Sample Conditionclear, filtrated
Chemical DemandspH 4-8
Drainpressure free into open drain
Number2 3
Storage Temp.5 – 25°C5 – 25°C
Usage/analysisappr. 0,27 ml / each reagentappr. 0,27 ml / each reagent
Reagent volume250 ml / 250 ml250 ml / 250 ml / 250 ml
Suitable forappr. 925 analysisappr. 925 analysis
Cycle (approx.)3 - 5 min (excluding flushing time)
Sample interval1 – 99 min or external start/stop