Product Overview

The Chemitec S480 UV PAH is the new generation of sensors for measuring Polycyclic Aromatic Hydrocarbons (PAH) and oil in water. It uses the highly sensitive UV fluorescence measuring principle, which is superior to conventional infrared scattering or absorption methods. This advanced technology allows the sensor to determine even the smallest traces of contaminants, making it suitable for monitoring drinking water and cooling water condensates. It is a reagent-free, real-time sensor with an innovative window coating that minimises the risk of fouling and maintenance.

Key Benefits

• Uses the highly sensitive UV fluorescence measuring principle.
• Provides high sensitivity and selectivity, enabling the determination of even the smallest traces of contaminants.
• Operates as a reagent-free, real-time sensor without the need for sampling or test preparation.
• Features an innovative optical window with nano coating to reduce fouling and minimise maintenance.
• Long calibration/maintenance interval of 24 months.

Applications

• Wastewater and Cooling water analysis, including leak detection in cooling and wastewater flows.
• Environmental monitoring and Pipeline monitoring.
• Petrochemical industry, Refineries, and Desalination plants.
• Bilge water monitoring.
• Airports.

Features & Construction

• Housing Material: Available in Stainless steel (1.4571/1.4404) or titanium (3.7035).
• Measurement Technology: Xenon flash lamp + filter (254 nm) for excitation, and a Photo diode + filter (360 nm) for detection.
• Connectivity: Available with a fixed 10m cable or without a cable for SubConn connection.
• Immersion Depth (Max): 300 m with SubConn-8pin underwater plug or 30 m with a fixed cable.

Technical Specifications

Specification	Value
Measurement Principle	Fluorescence
Parameters	PAH, oil
Measurement Range (PAH)	0...50 ppb, 0...500 ppb or 0...500 ppb, 0...5000 ppb (typical)
Measurement Range (Oil)	0...1.5 ppm, 0...15 ppm or 0...15 ppm, 0...150 ppm (typical)
Detection Limit	0.3 ppb / 0.5 ppb
Accuracy	+/- 5% FS
Reaction Time T100	less than 10 s
Pressure / Flow	3 Bar max (In flow cell 1 bar, 2 ... 4 L/min)
Interface	4...20mA/ RS 485
Power Supply / Consumption	12 ... 24 VDC (+/- 10%) / less than 3.5 W
Protection Type	IP68

Installation & Maintenance

• Calibration/Maintenance Interval: 24 months.
• Required Supervision: Less than 0.5 h/month (typical).