PerkinElmer AVIO 500, Руководство по оборудованию и обслуживанию для клиентов

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System Description
A flow of shear gas (compressed air or nitrogen) is directed at the plasma to "shear"
off the tip of the plasma discharge. The shear gas minimizes the effects of self-
absorption by forcing cooler atoms from the tip of the plasma out of the optical
path. The shear gas also keeps the purge window cool. The shear gas flow is turned
on automatically when the plasma is ignited.
Major Components
The Avio 500 consists of two major components: the spectrometer and the ICP
Source. The Avio 500 consists of two detectors. The plasma source is a dual-view
(can be viewed either axially or radially) RF generator. The sample introduction
system includes a built-in peristaltic pump and a "quick change" removable torch.
The removable torch includes the nebulizer and spray chamber. The nebulizer and
spray chamber are located outside of the instrument for easy accessibility and to
avoid being heated by the RF generator. The entire sample introduction system is
adjustable from outside the torch box while the RF generator is running. The torch
pneumatics includes a mass flow based nebulizer gas, a closed-loop pressure
restrictor based AUX and plasma gases.
Features of the Avio 500 include:
•
improved analytical performance especially in the low UV spectra
• simultaneous background correction
• solid-state generator for improved reliability
• smaller bench top instrument
The Spectrometer and the ICP Source is further divided into the assemblies
described below.
The Spectrometer consists of the following assemblies:
•
Optical Tub assembly
(a) the Transfer Optics module
(b) the Input module
(c) the UV Detector module
(d) the VIS Detector module
• Spectrometer Electronics assembly
• Spectrometer Pneumatics assembly
The ICP Source consists of the following assemblies:
•
RF Generator and Torch Compartment assemblies
• RF Control Electronics