Turbidity sensor with ultrasonic cleaning, connectable to the IQ SENSOR NET
VisoTurb®: Optical turbidity sensors according to nephelometric principle according to EN 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 EN 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.
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Model |
VisoTurb® 700 IQ |
VisoTurb® 700 IQ SW* |
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Order No. |
600010 |
600011 |
| * SW: Sensor as sea water model (with plastic arming (POM)) | ||
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Measuring method |
Nephelometric principle in compliance with EN ISO 7027 |
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Measuring range |
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FNU; NTU; TEF |
0.05 ... 4000 FNU |
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mg/l SiO2; ppm SiO2 |
0.1 ... 4000 mg/l SiO2 |
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g/l TS |
0.0001 ... 400 g/l TS |
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Resolution |
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FNU; NTU; TEF |
Automatic according to measuring range 0.001 ... 1 FNU |
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mg/l SiO2; ppm SiO2 |
0.001 mg/l ... 0.01 g/l |
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g/l TS |
0.001 mg/l … 1 g/l |
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Accuracy |
Process variation coefficient according to DIN 38402 part 51 <1 % (in the range up to 2000 FNU) |
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Calibration |
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FNU; NTU; TEF |
Factory calibration with formazine |
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mg/l SiO2; ppm SiO2 |
Factory calibration with SiO2 |
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g/l TS |
Calibration by user, (TSS regulations in compliance with DIN 38414) |
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Cleaning System |
Ultrasound cleaning system |
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SensCheck |
Contamination detection of optical window; failure of cleaning system |
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Pressure Resistance |
10 bar (incl. sensor connection cable) |
Maximum 2 bar |
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Ambient Conditions |
Operating temperature: 32 ... 140 °F (0 ... 60 °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; |
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Certifications |
CE |
CE |
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Mechanical |
Measuring window: Sapphire; |
Measuring window: Sapphire; |
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Weight (without cable) |
Approx. 2.18 lb (900 g) |
3.13 lb (1420 g) |
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Warranty |
2 years for defects in quality |
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