C-7100 Series User Manual PEAK INSTRUMENTS INC.
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3) Light path diagram
4) Important part of the instrument
A.
Power Board: The 220V50Hz/110V60Hz power conversion and regulation outside access to the necessary
equipment:-11.5V (tungsten lamp power), +12 V (fan power, electrical power), +5 V (computer system power), + /-
15V (signal board power supply), deuterium lamp filament preheating and lit power deuterium lamp is lit up and
the power breakdown.
B.
Light room: there are tungsten halogen lamp and deuterium lamp source device to automatically switch.
Halogen tungsten: tungsten halogen light source visible. Applicable wavelength range 340-1900nm. Because it uses
the principle of halogen cycle, it has a greater intensity of light emission and longer life. As the halogen cycle
requires a higher temperature. Thus lamps commonly used quartz glass or high temperature glass. Tungsten
halogen lamps emit energy in the visible region around the operating voltage is proportional to the fourth power,
therefore, to make light stable, the model has a stability of less than 0.2% of the power supply, the other imported
Philips halogen socket tungsten halogen lamp replacement to ensure stable and easy to use and long life.
Deuterium lamp: suitable wavelength range of 190-340nm. When deuterium lamp operation, maximum energy
sources in the vicinity of 230nm, 486.0nm and 656.1nm and has two characteristic lines, can be used for instrument
calibration wavelength accuracy in the visible region. Stability of the steady flow of less than 0.02% of the models,
to ensure stable deuterium lamps, imported from Japan, Hitachi another seat belt deuterium lamp replacement
lamps to ensure the convenience and use of the stability and long life.
C. Monochromator: contains spectral components - grating, into the slit, the slit, mirror, focusing lens, and the
wavelength filter drive system, the monochromatic light is emitted from the composite light can be decomposed
into monochromatic any wavelength of monochromatic light from the optical separation means
Raster: the dispersion of the original, the model uses 1200 / mm holographic grating ensure high resolution and low
stray light.
Filter: Due to the grating spectrum spectral overlap exists between the problem class times, so the use of filters to
eliminate spectral overlap problem.
Action slits, the slits in the monochromator is large, and the resolution of the instrument is not only related to the
dispersion of the grating and the size of the image (i.e., the slit width). The slit is too large, color band is
deteriorated, is not conducive to the qualitative analysis, quantitative analysis also affect the linear range of the
calibration curve, the slit is too small, flux decreased, reducing the signal to noise ratio, affect the measurement
