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DABECO Co.,Ltd
DABECO CL2.2 Electrochemical Chlorine Sensor

DABECO CL2.2 Electrochemical Chlorine Sensor

Product catalog summary

Overview: The CL2.2 indicator is designed for measuring free chlorine in brine or seawater with a concentration greater than 3.5% up to approximately 26% salt. It is crucial that the water does not contain surfactants and maintains a constant pH value.

Chlorination Agents: Suitable agents include inorganic chlorine compounds such as sodium hypochlorite, calcium hypochlorite, chlorine gas, and chlorine electrolysis with a membrane cell. Chlorine electrolysis without a membrane cell is unsuitable.

Measuring System: The system uses a membrane-covered, amperometric 2-electrode system with internal electronics. It offers both analog and mA versions, with non-galvanically isolated electronics and analog output signals.

Measuring Range and Temperature: The sensor's slope can vary between 65% and 150% of the nominal slope, affecting the measuring range. The working temperature for measuring water is 0 to +45°C, and ambient temperature is 0 to +55°C. Temperature compensation is automatic, but sudden changes should be avoided.

Pressure and Flow Rate: Maximum working pressure without a retaining ring is 0.5 bar, and with a retaining ring in TARAflow FLC, it is 1 bar. The recommended flow rate is approximately 15-30 cm/s.

pH Range: The device operates effectively within a pH range of 6 to 8, with attention to the dissociation equilibrium of HOCL.

Calibration and Interferences: Zero point adjustment is unnecessary. Calibration is performed using the DPD-1 method. Interferences include ClO2 and ozone, and issues may arise with electrolytically generated chlorine without a membrane cell.

Connection and Protection: The mV version uses a 5-pole M12 plug-on flange, while the 4-20 mA version can use either a 2-pole terminal or a 5-pole M12 plug-on flange. Protection types are IP68 for the M12 flange and IP65 for the 2-pole terminal.

Maintenance: Regular signal checks are recommended at least once a week. Membrane caps should be changed annually, and electrolyte every 3-6 months, depending on water quality.

Technical Data: The CL2.2 offers different configurations for analog output and internal signal processing, with specific measuring ranges, resolutions, and output resistances. Voltage supply requirements and connection details are provided for each configuration.

Spare Parts: Includes membrane caps, electrolytes, emery, and O-rings, with specific part numbers listed.

Catalog excerpts

DABECO CL2.2 Electrochemical Chlorine Sensor-3

Option 1: Retaining ring When operating with pressures >0.5 bar in TARAflow FLC Dimensions retaining ring 29 x 23.4 x 2.5 mm, slitted, PETP Different positions for groove Spare Parts Type (Subject to technical changes!)

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DABECO CL2.2 Electrochemical Chlorine Sensor-4

1. CL2.2 (analog output, analog internal signal processing) (Subject to technical changes!)

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DABECO CL2.2 Electrochemical Chlorine Sensor-5

Data Sheet January 2025 (EN) V15 2. CL2.2 4-20 mA (analog output, analog internal signal processing) 2.1 Electrical connection: 2 pole terminal clamp Measuring range Output Output resistance Nominal slope Voltage supply Galvanic isolation required in the measuring device/controller * Recommended: Round cable  4 mm 2 x 0.34 mm² * (Subject to technical changes!

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DABECO CL2.2 Electrochemical Chlorine Sensor-6

(Subject to technical changes!)

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DABECO CL2.2 Electrochemical Chlorine Sensor-7

Slope of TARAbase CL2 versus pH Temperature: 25°C / Flow rate: 30 l/h HOCI dissociation curve

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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