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16.03.2018

COD, NO3, NO2 in surface waters

Monitoring of surface waters with the maintenance-free spectral sensors from WTW – measurement directly in the water, connectable to the IQ SENSOR NET.

The optical spectral sensors of WTW provide the measurement of carbon parameters, nitrate and nitrite or suspended solids in lakes and rivers. The measurements with the maintenance-free sensors are taking place directly in the water body. Besides a maximum durability, the sensors convince by reliable results and the integrated ultrasonic cleaning. The sensors are operated with the IQ SENSOR NET.

Scopes of delivery

481058 – NiCaVis® 705 IQ SF
Optical nitrate and COD/TOC/DOC/BOD/SAC/UVT/TSS probe for the IQ SENSOR NET, with spectral processing of the UV‐VIS range (5 mm path length)

481059 – NiCaVis® 705 NI SF
Optical nitrite, nitrate and COD/TOC/DOC/BOD/SAC/UVT probe for the IQ SENSOR NET, with spectral processing of the UV range (5 mm path length)

Technical data

 

NiCaVis® 705 IQ SF

NiCaVis® 705 NI SF

Measuring principle

Spectral Measurement in the

UV‐VIS Range (200 ‐ 720 nm)

Spectral Measurement in the UV Range (200 ‐ 390 nm)

Application

Surface water bodies

Measurement range

NO3‐N: 0.00 … 50.00 mg/l

COD: 0.0 … 800.0 mg/l

DOC: 0.0 … 500.0 mg/l

BOD: 0.0 … 500.0 mg/l

SAC 254: 0.0 … 600.0 1/m

UVT 254: 0.0 … 100.0 %

TSS: 0.0 … 900.0 mg/l

NO3‐N: 0.00 … 50.00 mg/l

NO2‐N: 0.00 … 25.00 mg/l

COD: 0.0 … 800.0 mg/l

DOC: 0.0 … 500.0 mg/l

BOD: 0.0 … 500.0 mg/l

SAC 254: 0.0 … 600.0 1/m

UVT 254: 0.0 … 100.0 %

Material

Housing: Titan Grade 2, PEEK; measurement windows: Sapphire glas

Pressure resistance

≤ 1 bar

Ambient conditions

Operation: 0°C … +45°C; Storage: ‐10°C … +50°C

pH range

pH 4… pH 12

Dimensions

802 x 59,9 mm (length x diameter)

Weight

approx. 4 kg

Warranty

2 years for defects of quality

 

User calibration with photoLab® 7600 UV-VIS

The OptRF methods are also available within the spectral photometers photoLab® 7600 UV-VIS and can be used for a user calibration of the sensors, if needed. The common reference measurement of the optical, reagent-free measurements of COD, Nitrate and Nitrite is the photometric determination with test kits according to DIN ISO.

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