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System Description
Spectrometer
Optical System
The Avio 500 optical design combines an echelle polychromator with a solid-state
detector in an integrated system optimized for ICP-OES. The detector is a custom,
two-dimensional CCD array. The plasma source is a radial view or a dual-view
(can be viewed either axially or radially) RF generator.
The polychromator has an echelle grating designed to use multiple diffraction
orders. To separate the orders and create a two-dimensional diffraction pattern, the
echelle grating is combined with a cross-dispersing element. In the ultraviolet
range, a cross disperser is used. On the Avio 500, a prism is also used in the visible
range.
The Segmented-array, Charge-coupled-device Detector (SCD), patented by
PerkinElmer, is a solid-state imaging device. It provides simultaneous detection
with simultaneous background measurement.
The detector was designed to provide:
•
high UV quantum efficiency.
•
wide photometric dynamic range.
•
random access data readout: subarrays are addressed individually and data is
read out sequentially using CCD (Charge-Coupled Device) transfer
techniques.
•
low noise characteristics, including low dark current noise.
The slit width has three different settings: High, Normal, and Low. High resolution
uses the narrowest slit; low resolution uses the widest slit.
The way in which the detector is read varies when different slits are chosen. With
High resolution, each pixel is read as two separate half-pixels. With Normal and
Low resolution, each pixel in the detector subarray is read as a whole.
Optics Housing
The optics are sealed and insulated in a tub-like enclosure. The inside of the
enclosure is temperature controlled by outside heaters to a temperature of 39
0
C.
Содержание AVIO 500
Страница 1: ...AVIO 500 Customer Hardware and Service Guide ICP OPTICAL EMISSION ...
Страница 2: ......
Страница 3: ...Avio 500 Customer Hardware and Service Guide ...
Страница 12: ...Contents 10 ...
Страница 30: ...28 ...
Страница 31: ...C h a p t e r 1 ...
Страница 32: ......
Страница 33: ...Safety Practices 1 ...
Страница 58: ...56 Safety Practices ...
Страница 59: ...C h a p t e r 2 ...
Страница 60: ......
Страница 76: ...74 Preparing Your Laboratory ...
Страница 77: ...C h a p t e r 3 ...
Страница 78: ......
Страница 79: ...System Description 3 ...
Страница 94: ...92 System Description Figure 3 7 GemCone nebulizer and end cap N0680504 also shown in cross sectional view ...
Страница 115: ...C h a p t e r 4 ...
Страница 116: ......
Страница 137: ...135 Installing the Quick Change Adjustable Torch Module 1 2 10 8 9 3 4 7 6 5 ...
Страница 152: ...150 Installation Figure 4 22 Scott Spray Chamber Clip Assembly in Place ...
Страница 195: ...193 Shipping Lists 09290798 USB Cable Table 4 6 Spares Available Continued ...
Страница 196: ...194 Installation ...
Страница 197: ...C h a p t e r 5 ...
Страница 198: ......
Страница 209: ...207 Quick Change Adjustable Torch Module Figure 5 1 Quartz Torch Item Description 1 Plasma Induction Plates 2 Torch 2 1 ...
Страница 217: ...215 Quick Change Adjustable Torch Module 1 2 10 8 9 3 4 7 6 5 ...
Страница 316: ...314 Maintenance ...
Страница 317: ...C h a p t e r 6 ...
Страница 318: ......
Страница 339: ...337 RF Generator Sample Introduction System Troubleshooting Form Figure 6 2 Normal plasma at 3mm position ...
Страница 340: ...338 Troubleshooting Figure 6 3 Rounded Plasma due to sample or air getting around the outside typically subtle air leak ...
Страница 342: ...340 Troubleshooting Figure 6 5 Injector too far forward ...
Страница 343: ...341 RF Generator Sample Introduction System Troubleshooting Form Figure 6 6 No Aux Gas torch may be glowing ...
Страница 344: ...342 Troubleshooting Figure 6 7 Air leak or spray chamber temperature too high ...
Страница 345: ...343 RF Generator Sample Introduction System Troubleshooting Form Figure 6 8 Thin plasma due to leak in plasma gas line ...
Страница 346: ...344 Troubleshooting ...
Страница 354: ......