ThermoFisher Scientific Vanquish VC-D50, Operating Manual

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3 • Device Overview
Page 32 Fluorescence Detectors (VC-D50, VC-D51, VF-D50, VF-D51)
Operating Manual
3.1 Detector Features
The device comprises the following main features:
• A xenon flash lamp for the complete excitation wavelength range
from 200 nm to 880 nm as the light source of the device
• An optional second photomultiplier tube (PMT) to extend the
emission wavelength range to the near-infrared spectral region (up
to 900 nm)
without any loss in sensitivity in the UV/VIS spectral
region
• Data collection rates in single channel mode of up to 100 Hz (VC
detectors) or 200 Hz (VF detectors under Chromeleon 7 software)
• A wavelength switching time < 250 ms
• Optimized detection for high sensitivity (signal-to-noise ratio higher
than 550 for the Raman spectrum of water at 350 nm excitation),
over the entire lifetime of the lamp. It is thus possible to detect even
smallest peaks.
• Flow cells equipped with an active temperature control to ensure
improved reproducibility when ambient temperature fluctuates
• A cut-off filter to suppress the higher-order radiation typical of
grating spectrometers and scattering of light. For VF detectors, a
filter wheel can be moved to 5 different positions with the help of a
motor.
• Measurement of up to 4 data channels (VF detectors only) with
independent parameter settings (PMT selection, wavelengths,
sensitivity, filter wheel).