50 Agilent Restricted Agilent 5110/5100 ICP-OES Service Manual
3 General Information
Description
Figure 8. Agilent 5110 Synchronous Vertical Dual View optical layout
The pre-optics assembly gathers the incident light from the plasma and transfers the light into
the polychromator assembly.
The pre-optics assembly is located behind the RF box assembly. It contains a stepper motor
driven flat scanning mirror for the radial view aswell as fixed flat and toric mirrors for the Axial
view. The Vertical Dual View (VDV) and Synchronous Vertical Dual View (SVDV) also house a
stepper motor driven beam combiner utilizing Agilent Dichroic Spectral Combiner (DSC)
technology for SVDV and a mirror for VDV.
The pre optics module communicates with the control board via low speed SLIP bus.
The echelle polychromator is located inside the polychromator heater box. It is a purged,
thermostatted optics module designed to separate incident light into diffraction orders. The
polychromator uses an echelle grating with a cross-dispersing prism to form a two-dimensional
diffraction pattern across its focal plane.
The polychromator heater box assembly is located behind the RF oscillator at the rear of the
spectrometer frame assembly. It is an insulated, thermostatted housing that contains the
echelle polychromator casting and camera assembly.
The camera assembly is mounted in the polychromator casting in the focal plane of the optics.
It is a charged coupled device used to detect wavelengths of interest as selected by the
instrument operator. The camera is peltier cooled to -40°C.
The camera consist of 70,908 pixels, arranged in 70 non-linear arrays. The size, position and
orientation of the arrays ensure full wavelength coverage across the specified wavelength
range. The Agilent 5110 spectrometer utilizes either a purged, Radial view, Vertical Dual View
(Axial and Radial) or Synchronous Vertical Dual View optical system.
The echelle polychromator is housed in an insulated, temperature controlled, aluminum box
(heater box). A temperature sensor provides feedback to the instrument power control module
for the control of heater pads fixed to the outer box assembly. One sensor is fixed to the outer
box while the second sensor is fixed to the polychromator casting. The feedback is used to
maintain a stable casting temperature of 35° Celsius.
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