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HomeProductsProduct categoriesSensor technologyDigital IQ sensors (online) > IQ optical spectral probes (UV-VIS) for nitrate and CSB in surface water

Digital optical UV VIS spectral probes for nitrate, COD and suspended solids in surface water applications

WTW sensors - optical UV-VIS spectral sensors (nitrate, COD) NiCaVis® 705 IQ SF

NiCaVis® 705 IQ SF: Sensor with integrated ultrasonic cleaning for the reagent-free measurement of nitrate, COD and sTSS in rivers and lakes.

  • Measurement directly in the water body or with flow through armature
  • Maintenance-free ultrasonic cleaning technology

Spectral measurement of nitrate, COD and TSS content without chemicals for the measurement in surface water bodies.


Model Description Order no.
All sensors with integrated ultrasonic cleaning, multifunctional slide and shock-absorption-rings, without connecting cable (order SACIQ separately).
NiCaVis® 705 IQ SF Spectral sensor for the measurement of NO3, COD, TOC, DOC, BOD, SAC, UVT and TSS in surface water bodies. 481058

Technical Data

Model NiCaVis® 705 IQ SF
Measuring method Spectral measurement in the UV-VIS range of 200-720 nm
(optimized for municipal wastewater treatment plants)
Surface Water
Measuring range 0.00 ... 50.00 mg/l NO3-N
0.0…800.0 mg/l COD (tot/diss)
0.0…500.0 mg/l TOC
0.0…500.0 mg/l DOC
0.0…500.0 mg/l BOD
0.0…600.0 m-1 SAC 254 (tot/diss)
0.0…100.0 % UVT 254
0.0…900,0 mg/l TSS
Cleaning Maintenance-free WTW ultrasonic cleaning
Material Housing: Titanium, PEEK
Measuring window: Saphire glass
IQ SENSOR NET system 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 EH Supplement kit I for spectral sensors for horizontal mounting of a UV/VIS sensor, with the EH/F 170 swing mounting assembly 481073
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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