eCHEM Free Chlorine up to 2 mg/l

Dimensions
Length 205 mm
Diameter 25
Input data
Measured variables Free chlorine with reduced pH dependency
Temperature compensation Automatic through integrated temperature sensor Pt100
Cable specification black PUR (halogen free), shielded, M12 plug
Function and system design
Measuring method Amperometry
Measurement principle Membrane-covered, potentiostatic amperometric 3-electrode system
Auxiliary power
Electrical connection 8-pin M12 plug
Power supply 12-24 V (± 10 %)
Output data
Data interface RS-485, Modbus RTU
Output signal RS-485, Modbus RTU
Accuracy Measuring range 2 mg/L: at 0.4 mg/L & 1.6 ppm < 1 %
Measuring range 20 mg/L: at 4 mg/L < 1 %, at 16 mg/L W37< 3 %
Process conditions
Process temperature 0…+45 °C (no ice crystals in the test water)
Process pressure 3 bar, no pressure shocks or vibrations
Flow rate Approx. 15…30 L/h in FLC-3, minimum flow dependence exists
pH range pH 4 … pH 9, reduced pH dependence
Conductivity 10 µS/cm…50 mS/cm (sea water)
Performance characteristics
Response time T90: approx. 2 min
Running-in period Approx. 2 h prior to initial operation
Drift Approx. -1 % per month
Cross influences Combined chlorine increases measured value
Calibration method Determination of chlorine with DPD-1 method
Certificates and approvals
CE Manufacturer’s declaration 2014/30/EC EMC Directive (EN 61326-1:2013)
Work certificates Yes
Scope of delivery
Manual Yes
CE Manufacturer’s declaration Yes
Test certificate Yes
Accessories
Fittings Flow unit
Cables Extension cables: 0.3 m, 2 m, 10 m, 25 m
Measuring transducer TriBox3, TriBox Mini, HS100, TriBox flex
Validation/calibration DPD method

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