User Manual PEAK INSTRUMENTS INC
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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.
4.4.3. 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 accuracy, the slits there are two
general representation of the width, the actual width of the slit of a knife-edge
between the two expressed (in mm), the other to represent the bandwidth of
spectral bands (in nm).
4.4.4. Spectroscopic Room: contains a half-mirror, focusing lens and reflector to
achieve a beam monochromator out into two beams of light in different
directions
4.4.5. Sample Chamber: fixed 2-position cuvette holder, one is for reference
solution, and the other is for sample solution. 8-position cell changer is optional.
4.4.6. Signal Board: Transfer to the motherboard processed signal detection
light amplification
4.4.7. Main board: instrument micro control unit, control instruments light source
switch, the motor rotates, the signal processor display, etc.
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