Technical specifications
Measurement technology | Membrane-covered, amperometric potentiostatic 3-electrode system |
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Measuring principle | Amperometry |
Parameters | Free chlorine with reduced pH dependence |
Measuring range | 0...2 mg/L, 0...20 mg/L |
Accuracy | Measuring range 2 mg/L: | at 0.4 mg/L < 1 % | at 1.6 mg/L < 1 % |
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Measuring range 20 mg/L: | at 4 mg/L < 1 % | at 16 mg/L < 3 % | |
Response time | T90: approx. 2 min | ||
Run-in time | For initial commissioning approx. 2 h | ||
Drift | approx. -1 % per month | ||
Temperature compensation | Automatic, through integrated temperature sensor; temperature jumps must be avoided |
Housing material | Microporous hydrophilic membrane, PVC-U, stainless steel 1.4571 | |
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Dimensions (Lx Ø) | ~ 205 mm x 25 mm | ~ 8.1” x 1” |
interface | RS-485, Modbus RTU |
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Power supply | 9 – 30 VDC |
Connection | 8-pin M12 plug |
Maintenance interval | typically once a week |
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System compatibility | Modbus RTU |
Warranty | 1 year (EU&US: 2 years) on electronics; |
Process pressure | 3 bar | ~ 43.6 psi |
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no pressure surges and/or vibrations, with retaining ring | ||
Calibration method | Chlorine determination with DPD-1 method |
Process temperature | 0...+45 °C | ~ +32...+113 °F |
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no ice crystals in the sample water | ||
Flow rate | Approx. 15...30L/h in FLC-3, slight flow dependency is present | |
pH range | pH 4 ... pH 9, reduced pH value dependency | |
Conductivity | 10 μS/cm...50 mS/cm (seawater) | |
Cross influences | Combined chlorine increases measured value |