Waters

Waters SemiPrep 490E Programmable Multiwavelength Detector

Item Specification
Wavelength Range 190-600 nm in 1 nm increments. No lamp change required
Wavelength Accuracy + 2 nm
Wavelength Repeatability +0.05 nm
Spectral Bandwidth 4 nm
Noise 5 x 10-5 AU (peak-to-peak dry cell) at 230 nm and a1 second time constant
Drift 2.5x 10-4 AU/hr with ambient temperature change 1°C.hr
Attenuation Range 0.001 to 2.0 UFS
Linear Dynamic Range 8.7 x 103 at 214 nm; 1.2x 104 at 254 nm (ASTM E685)
Time Constants 0.1 to 99 sec
Scan Rate Up to 10 increments/sec; increments variable from 1 to 50 nm
Wavelength Switching Time 0.1 sec
Wavelength programming 8 wavelength changes/channel
Attenuation Programming 8 changes/channel
Event Outputs 8
Event Programming On, off, pulse, repetitive pulse
Event inputs 4
External power supply 12 V at 0.5 A
Auto zero Activated by wavelength change, event input, time program or front panel
Analog Outputs 4 independent channels
Refractive Index correction TAPER-CELL Design
Brandspreading 10µL
Path length 10 mm
Materials 316ss, Teflon, Suprasil
Cell pressure limit 1000 psig
Light source Xenon stobe lamp

This Waters SemiPrep 490E Programmable Multiwavelength Detector is in great condition.