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Measuring method
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Nephelometric principle in compliance with EN ISO 7027
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Measuring range
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FNU; NTU; TEF
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0.05 ... 4000 FNU
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mg/l SiO2; ppm SiO2
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0.1 ... 4000 mg/l SiO2
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g/l TS
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0.0001 ... 400 g/l TS
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Resolution
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FNU; NTU; TEF
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Automatic according to measuring range 0.001 ... 1 FNU
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mg/l SiO2; ppm SiO2
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0.001 mg/l ... 0.01 g/l
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g/l TS
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0.001 mg/l … 1 g/l
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Accuracy
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Process variation coefficient according to DIN 38402 part 51 <1 % (in the range up to 2000 FNU)
Repeatability according to DIN ISO 5725 or DIN 1319 < 0.015 % or ≥ 0.006 FNU
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Calibration
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FNU; NTU; TEF
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Factory calibration with formazine
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mg/l SiO2; ppm SiO2
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Factory calibration with SiO2
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g/l TS
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Calibration by user, (TSS regulations in compliance with DIN 38414)
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Cleaning System
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Ultrasound cleaning system
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SensCheck
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Contamination detection of optical window; failure of cleaning system
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Pressure Resistance
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10 bar (incl. sensor connection cable)
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Maximum 2 bar
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Ambient Conditions
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Operating temperature: 32 ... 140 °F (0 ... 60 °C);
ultrasonic cleaning system: 32 ... 104 °F (0 ... 40 °C) (overheating protection);
Storage temperature: 23 ... 149 °F (-5 ... +65 °C)
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Electrical connections
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2-wire shield cable with quick fastener to sensor
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Electromagnetic Compatibility
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EN 61326, Class B, FCC Class A;
Intended for indispensable operation
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Certifications
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CE
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CE
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Mechanical
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Measuring window: Sapphire;
Sensor body: V4A stainless steel 1.4571;
Protection rating: IP 68
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Measuring window: Sapphire;
Sensor body: Titanium, POM;
Protection rating: IP 68
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Weight (without cable)
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Approx. 2.18 lb (900 g)
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3.13 lb (1420 g)
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Warranty
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2 years for defects in quality
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