IQ Sensor Net System IQ Sensor Net VisoTurb® Turbidity Sensor

700 IQ
Overview Specifications Industries & Applications Documentation & Tools ;


The WTW IQ Sensor Net VisoTurb® 700 IQ Turbidity Sensor is precisely calibrated with a multi-point factory calibration. The calibration is extremely stable and there is no need to calibrate on-site. A matrix adjustment is possible as needed.

Product Features
  • Optical based turbidity/TSS (Total Suspended Solids) sensor for the IQ Sensor Net control system.
  • Ultrasonic cleaning
  • Extremely low-maintenance
  • Highly accurate factory calibration
  • High operational safety (sensor check function)
  • 2-year Warranty

WTW UltraClean™ Ultrasonic Cleaning: the ultrasound source is integrated in the sensor and generates high-frequency vibrations of the optical windows. Ultrasonic cleaning prevents biofouling resulting in maintenance free operation with accurate measurements every time.

Measurement principle utilizes nephelometric measurement technology in accordance with EN ISO 7027 (DIN EN 27027 or ISO 7027). Sample discoloration does not affect measurements.

2 versions:

  • WTW IQ Sensor Net VisoTurb® 700 IQ Turbidity Probe (SKU: 600010)
  • WTW IQ Sensor Net VisoTurb® 700 IQ SW Turbidity Probe for Sea Water (SKU: 600011)


IQ Sensor Net VisoTurb Turbidity Sensor
VisoTurb® 700 IQ SW*
VisoTurb® 700 IQ SW*
Order No.
Measuring method
Nephelometric principle in compliance with EN 27027 and ISO 7027
Measuring range FNU; NTU; TEF
0.05 ... 4000 FNU
Measuring range mg/l SiSo2; ppm SiO2
0.1 ... 4000 mg/l SiO2
Measuring range g/l TS
0.0001 ... 400 g/l TS
Resolution FNU; NTU; TEF
Automatic according to measuring range 0.001 ... 1 FNU
Resolution mg/l SiO2; ppm SiO2
0.001 mg/l ... 0.01 g/l
Resolution g/l TS
0.001 mg/l … 1 g/l
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
Calibration mg/l SiO2; ppm SiO2
Factory calibration with SiO2
Calibration g/l TS
Calibration by user, (TSS regulations in compliance with DIN 38414)
Cleaning System
Ultrasound cleaning system
Contamination detection of optical window; failure of cleaning system
Pressure Resistance
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
Measuring window: Sapphire; Sensor body: Titanium, POM; Protection rating: IP 68
Weight (without cable)
3.13 lb (1420 g)
2 years for defects in quality
Industries & Applications

Industries & Applications

Recommended Industries and Applications

Documentation & Tools

Documentation & Tools




There was a problem...

Install for this language not supported at the moment. Please try again later.