Waters 490E Programmable Multiwavelength Detector

This detector is in good condition and tested at GenTech. The Waters 490E is a microprocessor-based four-channel ultraviolet/viable detector. The 490E is designed for high performance liquid chromatography applications. The 490E can operate as a stand-alone unit or with a Waters system controller or data system. Includes THIRTY (30) DAY WARRANTY.

Operational Specifications

Wavelength range: 190 to 600 nm Wavelength accuracy: ± 2 nm Wavelength repeatability: ± 0.05 nm Noise: 5.0 x10 -5 AU, at 230 nm with acetonitrile at 1 ml/min and time constant of 1 second Drift: 2.5 x 10 -5 AU/hour with ambient temperature change <1 °C /hour Attenuation Range: 0.001 to 3.0 AUFS (under software control) Time constants: 0.1 to 99 seconds (under software control) Spectral Bandwidth: 4 nm Linear dynamic range: 8.7 x 10-3 at 214 nm; 1.2 x 10 4 at 254 nm Scan rate: Up to 10 increments/second; increments variable from 1 to 50 nm Wavelength switching time: 0.1 second Wavelength and attenuation programming: 8 changes/channel Event outputs: 8 outputs-can be set to on, off, pulse, repetitive pulse Event inputs: 4 Analog outputs: 4 independent channels

Optical Component Specifications:

Lamp source: Xenon strobe lamp Flowcell: Dual beam Taper-Cell design Path length: 10 mm (standard, analytical) Cell volume: 8 uL (standard, analytical) Pressure limit: 1000 psi