TURBIDITY AND SUSPENDED SOLID

Turbidity and Suspended Solid
Turbidity and Suspended Solid
Turbidity - VisoTurb® 700 IQ

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.

ModelVisoTurb® 700 IQVisoTurb® 700 IQ SW*
Order No.600010600011
Measuring methodNephelometric principle in compliance with EN 27027 and ISO 7027
Measuring range
FNU; NTU; TEF0.05 … 4000 FNU
mg/l SiO2; ppm SiO20.1 … 4000 mg/l SiO2
g/l TS0.0001 … 400 g/l TS
Resolution
FNU; NTU; TEFAutomatic according to measuring range 0.001 … 1 FNU
mg/l SiO2; ppm SiO20.001 mg/l … 0.01 g/l
g/l TS0.001 mg/l … 1 g/l
AccuracyProcess 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; TEFFactory calibration with formazine
mg/l SiO2; ppm SiO2Factory calibration with SiO2
g/l TSCalibration by user, (TSS regulations in compliance with DIN 38414)
Cleaning SystemUltrasound cleaning system
SensCheckContamination detection of optical window; failure of cleaning system
Pressure Resistance10 bar (incl. sensor connection cable)Maximum 2 bar
Ambient ConditionsOperating 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 connections2-wire shield cable with quick fastener to sensor
Electromagnetic CompatibilityEN 61326, Class B, FCC Class A;
Intended for indispensable operation
CertificationsCECE
MechanicalMeasuring window: Sapphire;Measuring window: Sapphire;
Sensor body: V4A stainless steel 1.4571;Sensor body: Titanium, POM;
Protection rating: IP 68Protection rating: IP 68
Weight (without cable)Approx. 2.18 lb (900 g)3.13 lb (1420 g)
Warranty2 years for defects in quality
* SW: Sensor as sea water model (with plastic arming (POM))
Suspended Solid - ViSolid® 700 IQ

Digital suspended solids sensor with ultrasonic cleaning, connectable to the IQ SENSOR NET
ViSolid®: Optical sensors for the in-situ use to measure suspended solids via scattered light and direct back-scattering 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 higher particle concentrations, the procedures of turbidity measurement are only suitable in some cases; here, you will need special measuring techniques to determine the concentration. WTW uses two procedures, which are used depending on the suspended solids concentration: With low concentrations, a scattered light measurement is used; for higher concentrations, the direct back-scattering yields optimal results.

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.

ModelViSolid® 700 IQViSolid® 700 IQ SW*
Order No.600012600013
Measuring methodProcedure for measuring scattered light
Measuring range
g/l SiO20 … 300 g/l SiO2
% SiO20 … 30% SiO2
g/l TSS0 … 1000 g/l TSS
% TSS0 … 100% TSS
Resolution
g/l SiO2Automatic according to measuring range 0.1 mg/l … 1 g/l
% SiO2Automatic according to measuring range 0.001 % … 0.01 %
g/l TSSAutomatic according to measuring range 0.1 mg/l … 1 g/l
% TSSAutomatic according to measuring range 0.001 % … 0.1 %
CalibrationTypical sludge characteristics stored: matrix type 1, matrix type 2
Calibration by user: adjustment via correction factor, 1-point or multi-point calibration possible
Cleaning SystemUltrasound cleaning system
SensCheckContamination detection of optical window; failure of cleaning system
Pressure Resistance10 bar (incl. sensor connection cable)
Ambient ConditionsOperating 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 connections2-wire shield cable with quick fastener to sensor
Electromagnetic CompatibilityEN 61326, Class B, FCC Class A;
Intended for indispensable operation
CertificationsCE
MechanicalMeasuring window: Sapphire;Measuring window: Sapphire;
Sensor body: V4A stainless steel 1.4571;Sensor body: Titanium, POM;
Sensor head: V4A stainless steel 1.4571;Sensor head: Titanium;
Protection rating: IP 68Protection rating: IP 68
Weight (without cable)Approx. 2.18 lb (900 g)3.13 lb (1420 g)
Warranty2 years for defects in quality
* SW: Sensor as sea water model (with plastic arming (POM))

*More instruments are available, please liaise with us if any of your required instruments is not listed above.