Product Overview

The Chemitec S480 UV NO3 is a low-cost UV photometer designed for highly precise, real-time nitrate determination in water. It utilises the proven UV-absorption method and operates as a reagent-free sensor, eliminating the need for test sample preparation. The sensor is equipped with four detection channels that allow for accurate compensation of interfering factors like turbidity and organic substances. An internal temperature correction also increases the stability of the measured value. Its optical window features a nano coating for durability.

Key Benefits

• Low-cost, reagent-free nitrate determination.
• Uses four detection channels for precise optical determination and robust compensation of turbidity and organic substances.
• Provides real-time measurement without sampling or test sample preparation.
• Increased stability of measured values due to internal temperature correction.
• Features an optical window with nano coating.
• Low required supervision (typically less than 0.5 h/month).

Applications

• Sewage treatment plants.
• Environmental monitoring.
• Drinking water.

Features & Construction

• Housing Material: Available in Stainless steel (1.4571/1.4404) or titanium (3.7035).
• Measurement Technology: Xenon flash lamp with 4 photo diodes and a filter.
• Cleaning: Includes a standard G1/8" thread for compressed air cleaning (optional connector for 6mm tube is available).
• Optical Path Options: Available in 0.3, 1, 2, 5, 10, and 50mm.
• Connectivity: Available with a fixed cable or Subcon connector.

Technical Specifications

Specification	Value
Measurement Principle	Attenuation, UV-Absorption
Parameters	NO3-N / NO3, NOx-N, NOx (calibrated with NO3 standard solution)
Measurement Range (10 mm path)	+/- (5% + 0.1 mg/L NO3-N)
Accuracy (10 mm path)	+/- (5% + 0.1 mg/L NO3-N)
Reaction Time T100	20 s
Pressure / Flow	3 Bar max (In flow cell 1 bar, 2 ... 4 L/min)
Interface	RS485 (Modbus RTU)
Power Supply / Consumption	12 ... 24 VDC (+/- 10%) / less than 7 W
Protection Type	IP68

Installation & Maintenance

• Cleaning: Cleaning is supported by a standard G1/8" thread for compressed air.
• Required Supervision: Less than 0.5 h/month (typical).