IQ Sensor Net System IQ Sensor Net VisoTurb Turbidity Sensor

700 IQ
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Overview

Overview

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

Turbidity sensor with ultrasonic cleaning, connectable to the IQ SENSOR NET 
VisoTurb®: Optical turbidity sensors according to nephelometric principle according to DIN EN 27027 and ISO 7027 for the in-situ use in water/wastewater with ultrasonic cleaning system:
•Ultrasonic cleaning without mechanics 
•Extremely low-maintenance 
•Highly accurate factory calibration 
•High operational safety (sensor check function)

The ultrasonic cleaning system ensures the low-maintenance and continuously reliable measuring operation of the sensors, which are therefore very suited for extreme applications, such as wastewater treatment plants. 

With the nephelometric measuring principle of the VisoTurb®, the stray light is measured at a 90° angle. The measuring setup is suitable for low and medium turbidity values up to 4000 FNU. According to DIN EN 27027 and ISO 7027, infrared light is used in the wavelength range of 860 nm. This wave length is outside the visible range, so that possible sample colorings generally do not cause any interference. 

The sea water model includes the sensor for use in special media: All wetted parts are made of titanium and plastic and are therefore extremely resistant to corrosion.

Specifications

Specifications

Specifications
VisoTurb® 700 IQ
VisoTurb® 700 IQ SW*
Model
VisoTurb® 700 IQ
VisoTurb® 700 IQ SW*
Order No.
600010
600011
Measuring method
Nephelometric principle in compliance with EN 27027 and ISO 7027
Nephelometric principle in compliance with EN 27027 and ISO 7027
Measuring range FNU; NTU; TEF
0.05 ... 4000 FNU
0.05 ... 4000 FNU
Measuring range mg/l SiSo2; ppm SiO2
0.1 ... 4000 mg/l SiO2
0.1 ... 4000 mg/l SiO2
Measuring range g/l TS
0.0001 ... 400 g/l TS
0.0001 ... 400 g/l TS
Resolution FNU; NTU; TEF
Automatic according to measuring range 0.001 ... 1 FNU
Automatic according to measuring range 0.001 ... 1 FNU
Resolution mg/l SiO2; ppm SiO2
0.001 mg/l ... 0.01 g/l
0.001 mg/l ... 0.01 g/l
Resolution g/l TS
0.001 mg/l … 1 g/l
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
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
Factory calibration with formazine
Calibration mg/l SiO2; ppm SiO2
Factory calibration with SiO2
Factory calibration with SiO2
Calibration g/l TS
Calibration by user, (TSS regulations in compliance with DIN 38414)
Calibration by user, (TSS regulations in compliance with DIN 38414)
Cleaning System
Ultrasound cleaning system
Ultrasound cleaning system
SensCheck
Contamination detection of optical window; failure of cleaning system
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)
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
2-wire shield cable with quick fastener to sensor
Electromagnetic Compatibility
EN 61326, Class B, FCC Class A; Intended for indispensable operation
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
2 years for defects in quality
Solutions

Solutions

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Documentation & Tools

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