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Optical SAC and UVT sensor

WTW optical SAC/UVT sensor UV 700 IQ SAC

UV 700 IQ SAC: Low-cost probe (integrated ultrasonic cleaning, turbidity compensation) for the maintenance-free and reagent-free SAC measurement according to DIN 38404 C3

  • No wear parts
  • No replacement of seals
  • No risk of penetrating water
  • No corrosion

With the new sensor UV 700 IQ SAC, you can determine the spectral absorption coefficient at 254 nm directly and without chemicals. Turbidity influences are compensated by a reference measurement at 550 nm.

As a sum parameter, similar to the COD, the SAC allows information about the organic contamination of water. This makes this sensor ideal to capture organic deposits in wastewater and surface waters. In addition to the SAC, you can use this sensor to determine the UV transmission at 254 nm. This is most commonly used in the control of UV disinfection systems.


Model Description Order no.
UV 701 IQ SAC Optical SAC and UVT sensor (254 nm) to measure higher concentrations 481036
UV 705 IQ SAC Optical SAC and UVT sensor (254 nm) to measure lower concentrations 481038

Technical Data

Model UV 701 IQ SAC UV 705 IQ SAC
Measuring range SAC: 0.0-3000m-1
UVT: 0,0-100,0%
SAC: 0.0-600m-1
UVT: 0,0-100,0%
Resolution SAC: 1m-1
UVT: 0,1%
SAC: 1m-1
UVT: 0,1%
Measuring method UV absorption measurement 254 nm UV absorption meaurement 254 nm
Compensation Turbidity compensation Turbidity compensation
Cleaning WTW ultrasonic cleaning WTW ultrasonic cleaning
Material Housing: Titanium, PEEK
Measuring window: Saphire glass
Housing: Titanium, PEEK
Measuring window: Saphire glass
IQ Sensor Net system 282/284 and 2020 282/284 and 2020


Model Description Order no.
DIQ/CHV Dual IQ/Cleaning Head Valve for system 282/284 472007
MIQ/CHV PLUS Modules IQ/Cleaning Head Valve for system 2020 480018
Cleaning Air Box - 115 VAC Air pressure compressor, 115 VAC 480017
Cleaning Air Box - 230 VAC Air pressure compressor, 230 VAC 480019
VIS FT-1 Flow measuring cell for use with automatic compressed air cleaning 480080
VIS FT-1/RS Spare parts set for VIS FT-1 480081
VIS Set Brushes/1mm 2 cleaning brushes for gap width 1 mm 481031
VIS Set Brushes/5mm 2 cleaning brushes for gap width 5 mm 481032
VIS/CT Cleaning cards 481071
VIS/CV Multifunctional slide 481074
SET/AP Air pressure cleaning set: 15 m compressed air hose including fittings 481075
VIS/CS Cleaning set 481079


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