PID chromatography detector 4430

gas

The Model 4430 Photoionization Detector (PID) is a uniquely-designed gas chromatograph (GC) that selectively responds to aromatic and olefinic hydrocarbons in the presence of alkanes and other saturated hydrocarbons. Our Model 4430 PID’s unique patented Window Sweep™ design prevents the sample stream from contacting and contaminating the lamp window. It also allows the analysis of photosensitive compounds, which would otherwise combine to form a polymer on the window surface. The 4430 detector contains an ionizing chamber, UV lamp, and column makeup adaptor and uses a standalone, high-voltage power supply for the UV lamp. The 4430 PID features a unique patented Window Sweep™ design that prevents the sample stream from contacting and contaminating the lamp window. It also allows the analysis of photosensitive compounds, which would otherwise polymerize on the window surface. The 4430 PID is available for installation on most GC manufacturer’s instruments. PID Features: UV-lamp Window Sweep design minimizes fouling from window surface contamination Lampsaver™ circuit extends lamp lifetime by turning off when not in use Direct interface to ELCD, XSD, or FID to form tandem detector systems; requires only one detector port Detector vent for venting undesirable sample solvents Compatible with packed and capillary columns Custom engineered to fit specific GC models Easy operation and maintenance Operating Principle The sample stream flows through the detector’s reaction chamber where it is continuously irradiated with high-energy ultraviolet light.