ThermoFisher Scientific Vanquish VC-D11, Руководство по эксплуатации, Страница: 170 / 192

9 • Specifications
Page 170 Diode Array/Multiple-Wavelength Detectors (VC-D11, VC-D12, VF-D11)
Operating Manual
9.1 Performance Specifications
9.1.1 Detector
The device performance is specified as follows:
Type Specification
Optical design • Single-beam, reverse-optics design with concave holographic grating
• 1024-element photodiode array
Light source • Deuterium lamp for UV and VIS wavelength ranges (30 W)
• Tungsten lamp for VIS and NIR wavelength ranges (20 W) (standard
for VF detectors, optional for VC detectors)
Wavelength range 190 – 800 nm
Spectral bandwidth 0.6 nm pixel resolution (average); < 1 nm over complete range
Diode bunching (VC‑D11 and
VF‑D11 only) 1 – 100 nm, individually programmable for each signal channel and 3D
field
Wavelength accuracy ± 1 nm
Wavelength repeatability ± 0.1 nm
Wavelength calibration Internal calibration with D-alpha line of the deuterium lamp
Wavelength validation Internal validation with holmium-oxide glass filter
Signal channels VC detectors:
8 signal channels
VF detector:
10 signal channels
Data collection rate VC detectors:
Adjustable, 0.2 Hz – 125 Hz
VF detector:
Adjustable, 0.2 Hz – 250 Hz
Filter response times (in seconds) VC detectors:
0 (no filter), 0.05, 0.1, 0.2, 0.5, 1,
2, 5, 10, 20
VF detector:
0 (no filter), 0.01, 0.02, 0.05, 0.1,
0.2, 0.5, 1, 2, 5, 10, 20
Spectra scan VC‑D11:
3D field with full
spectral range 125 Hz
VC‑D12:
Not available
VF‑D11:
3D field with full
spectral range 250 Hz
Noise <± 6 µAU at 254 nm ASTM
<± 12 µAU at 520 nm ASTM
Noise reference conditions:
• Wavelength: as listed above; bandwidth 4 nm; reference wavelength:
Off; slit width: Wide
• Time constant: 2 sec (response time = 2.2 x time constant as proposed
in ASTM). For details, see below this table.
• Flow cell: 10 mm standard stainless steel flow cell
• Flow: 1 mL/min LC/MS-grade water from highly efficient water
purification system; column installed in flow path before flow cell;
pump pressure: >7 MPa
• Temperature conditions: See below this table.