| 
 Measuring method 
 | 
 Electrochemical 
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| 
 Appropriate Electrode 
 | 
 Reference electrode VARiON® Ref, Measuring electrode VARiON®Plus NO3, Compensation electrode VARiON®Plus Cl 
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| 
 Measuring range/Resolution 
 | 
 NH4-N: 1 ... 2,000 mg/l / 1 mg/l; 0.1 ... 100 mg/l / 0.1 mg/l NH4+: 1 ... 2,580 mg/l / 1 mg/l; 0.1 ... 129.0 mg/l / 0.1 mg/l 
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| 
 Compensation Range 
 | 
 K+: 0.1 ... 1,000 mg/l / 0.1 mg/l 
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| 
 Measuring Accuracy in laboratory standard solutions 
 | 
 ± 5 % of measured value ± 0.2 mg/l in standard solutions 
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| 
 Calibration Procedures 
 | 
 Matrix adjustment against any reference value, 2-point-calibration possible with multiple standard solution 
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| 
 Working Life (typically) 
 | 
 Reference electrode: 18 months,  measuring and compensation electrode: 18 months (in typical application - municipal sewage plants) 
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| 
 Temperature Measurement and Compensation 
 | 
 Integrated NTC thermistor,  Range 32 °F … 104 °F (0 °C … +40 °C), Accuracy ±0.5 K, Resolution 0.1 K, t95 < 20 s 
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| 
 Pressure Resistance 
 | 
 Maximum 0.2 bar (incl. SACIQ sensor connection cable, with installed electrodes) 
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| 
 Ambient Conditions 
 | 
 Operating temperature: 32 °F … 104 °F (0 °C … +40 °C), storing temperature: 32 °F … 104 °F (0 °C … +40 °C) 
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| 
 Electrical connections 
 | 
 2-wire shield cable with quick fastener to sensor 
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| 
 Electromagnetic Compatibility 
 | 
 EN 61326, Class B, FCC Class A;  Intended for indispensable operation 
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| 
 Certifications 
 | 
 CE 
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| 
 Mechanical 
 | 
 Sensor body: V4A stainless steel 1.4571 Protective cup: POM Temperature sensor: V4A stainless steel 1.4571 Protection rating: IP 68 (0.2 bar, with installed electrodes) Electrode connector: POM 
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| 
 Weight 
 | 
 Approx. 1.48 lb (670 g, without electrode, without sensor connection cable) 
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| 
 Warranty 
 | 
 AmmoLyt®Plus 700 IQ: 2 years Electrodes: 1 year for defects of quality 
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