UV spectral sensors for nitrite, nitrate, COD and BOD

Digital, optical sensor for the IQ SENSOR NET
NiCaVis® 700 IQ NI: UV probes with integrated ultrasonic cleaning for the reagent-free measurement of nitrate, nitrite and carbon parameters directly in the process:
• Measurement directly in the process
• No waiting for response times
• Maintenance-free WTW ultrasonic cleaning
• No wear parts, like wipers
• Now available for surface water
The full flexibility for your measurement:
The high resolution of these sensors allows the precise distinction and measurement of nitrate and nitrite. At the same time, up to 3 carbon parameter such as COD, BOD, DOC, TOC, UVT or SAC are determined. This allows the complete monitoring and optimization of processes in the aeration of wastewater treatment plants.

Order No. 481054 481055
* The UVT-254 value is standardized to 10 mm gap width.
Measuring method Spectral Measurement in the UV Range (200 – 390 nm)
Measuring gap
(optical layer thickness)
1 mm 5 mm
Application (optimized for) Municipal wastewater: Municipal wastewater:
Measuring range and Resolution Inlet:
NO3 0.0 … 300.0 mg/l 0.1 mg/l
NO3-N 0.00 … 60.00 mg/l 0.01 mg/l
NO2 0.0 … 120.0 mg/l 0.1 mg/l
NO2-N 0.00 … 30.00 mg/l 0.01 mg/l
COD total 0 … 20,000 mg/l 1 mg/l
COD dissolv 0 … 12,500 mg/l 1 mg/l
TOC 0 … 20,000 mg/l 1 mg/l
DOC 0 … 12,500 mg/l 1 mg/l
BOD 0 … 8,000 mg/l 1 mg/l
SAC254 total 0 … 5,000 1/m 1 1/m
UVT254 total* 0 … 100.0 % 0.1 %
Aeration:
NO3 0.0 … 300.0 mg/l 0.1 mg/l
NO3-N 0.00 … 60.00 mg/l 0.01 mg/l
NO2 0.0 … 120.0 mg/l 0.1 mg/l
NO2-N 0.00 … 30.00 mg/l 0.01 mg/l
COD dissolv 0 … 12,500 mg/l 1 mg/l
DOC 0 … 12,500 mg/l 1 mg/l
SAC254 total 0 … 5,000 1/m 1 1/m
UVT254 total* 0 … 100.0 % 0.1 %
Effluent: Effluent:
NO3 0.0 … 750.0 mg/l 0.1 mg/l 0.0 … 250.0 mg/l 0.1 mg/l
NO3-N 0.0 … 150.0 mg/l 0.1 mg/l 0.00 … 50.00 mg/l 0.01 mg/l
NO2 0.0 … 300.0 mg/l 0.1 mg/l 0.0 … 100.0 mg/l 0.1 mg/l
NO2-N 0.00 … 75.00 mg/l 0.01 mg/l 0.00 … 25.00 mg/l 0.01 mg/l
COD total 0 … 4.000 mg/l 1 mg/l 0.0 … 800.0 mg/l 1 mg/l
COD dissolv 0 … 4.000 mg/l 1 mg/l 0.0 … 800.0 mg/l 1 mg/l
TOC 0 … 2.500 mg/l 1 mg/l 0.0 … 500.0 mg/l 1 mg/l
DOC 0 … 2.500 mg/l 1 mg/l 0.0 … 500.0 mg/l 1 mg/l
BOD 0 … 2.500 mg/l 1 mg/l 0.0 … 500.0 mg/l 1 mg/l
SAC254 total 0 … 3.000 1/m 1 1/m 0.0 … 600.0 1/m 1 1/m
UVT254 total* 0 … 100.0 % 0.1 % 0.0 … 100.0 % 0.1 %
Flow rate ≤ 3 m/s
Pressure Resistance Maximum 1 bar (incl. sensor connection cable)
Electrical connections 2-wire shield cable with quick fastener to sensor
Electromagnetic Compatibility EN 61326. Class B. FCC Class A
Intended for indispensable operation
Certifications CE
Mechanical Housing: Titan Grade 2. PEEK, Window: Sapphire glass
Protection class: IP 68
Weight (without cable) Approx. 8.82 lb (4 kg)

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