Measuring method

Nephelometric principle in compliance with EN ISO 7027

Measuring range

FNU; NTU; TEF

0.05 ... 4000 FNU

mg/l SiO₂; ppm SiO₂

0.1 ... 4000 mg/l SiO₂

g/l TS

0.0001 ... 400 g/l TS

Resolution

FNU; NTU; TEF

Automatic according to measuring range 0.001 ... 1 FNU

mg/l SiO₂; ppm SiO₂

0.001 mg/l ... 0.01 g/l

g/l TS

0.001 mg/l … 1 g/l

Accuracy

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

Calibration

FNU; NTU; TEF

Factory calibration with formazine

mg/l SiO₂; ppm SiO₂

Factory calibration with SiO₂

g/l TS

Calibration by user, (TSS regulations in compliance with DIN 38414)

Cleaning System

Ultrasound cleaning system

SensCheck

Contamination detection of optical window; failure of cleaning system

Pressure Resistance

10 bar (incl. sensor connection cable)

Maximum 2 bar

Ambient Conditions

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)

Electrical connections

2-wire shield cable with quick fastener to sensor

Electromagnetic Compatibility

EN 61326, Class B, FCC Class A;
Intended for indispensable operation

Certifications

CE

CE

Mechanical

Measuring window: Sapphire;
Sensor body: V4A stainless steel 1.4571;
Protection rating: IP 68

Measuring window: Sapphire;
Sensor body: Titanium, POM;
Protection rating: IP 68

Weight (without cable)

Approx. 2.18 lb (900 g)

3.13 lb (1420 g)

Warranty

2 years for defects in quality