Thermo Scientific 074114, Руководство оператора

Страница: 114 / 148

Dionex PDA Operator’s Manual
106
Doc. 065378-01 1/12
A.4 Detector
Optical System Single-beam, reverse-optics design with concave holographic
grating
Light Sources Deuterium lamp (30 W) for ultraviolet spectrum analysis
Tungsten lamp (15 W) for visible spectrum analysis
Both lamps: Lifetime of 2000 hours with >50% of initial
intensity
Photodiode Array 1024-element photodiode array bench
Wavelength
Range
190 to 800 nm
Pixel Resolution 0.7 nm
Wavelength
Accuracy
r
1 nm, self-calibration with deuterium lines, verification with
built-in holmium oxide filter
Noise with
Standard or Semi-
Preparative Cell
Installed
<± 10
P
AU at 254 nm, 2 second rise time, 4 nm bandwidth, and
flowing water at 1.0 mL/min
<± 15
P
AU at 520 nm, 2 second rise time, 10 nm bandwidth, and
flowing water at 1.0 mL/min
Noise with Semi-
Micro Cell
Installed
<± 15
P
AU at 254 nm, 2 second rise time, 4 nm bandwidth, and
flowing water at 1.0 mL/min
<± 15
P
AU at 520 nm, 2 second rise time, 10 nm bandwidth, and
flowing water at 1.0 mL/min
Drift <1000
P
AU/hour (after warm-up)
Linearity Deuterium lamp: >2 AU
Tungsten lamp: >2 AU
Analog Outputs Four; 0 to 3 AU, selectable, 1000 mV range
Voltage Out 1 V output
Analog Output
Range
0.0005, 0.001, 0.01, 0.1, 0.5, 1.0, 2.0, or 3.0 AU full-scale
Control and Data
Evaluation
Provided by Chromeleon 7 or Chromeleon 6.8 software; the PC
and the detector are connected through USB (Universal Serial
Bus)