Features Of Light Source; Specifications - Hitachi CHROMASTER 5160 Instruction Manual

2.3.5 Features of light source

2.4 Specifications

The light source thermally dissociates ozone via the heat
generated by the xenon lamp itself. This allows the use of a
quartz-bulb xenon lamp that produces intense radiation even in
the short wavelength region.
As a safety measure against failure or stoppage of the cooling
fan, a thermal sensor works to extinguish the xenon lamp in
about 15 minutes if the fan stops during analysis at a room
temperature of 27 °C, or in about 20 minutes if the fan was
stopped from the beginning, in order to prevent failure or damage
of the instrument.
(1) Optical system:
Ratio photometry;
intensity of transmitted beam is monitored.
(2) Light source:
Xe lamp (150 W)
Hg lamp (for checking wavelength)
(3) Excitation wavelength range: 200 to 850 nm/Zero order
(4) Emission wavelength range:
250 to 900 nm/Zero order
Photomultiplier must be changed at emission wavelength
greater than 731 nm.
(5) Spectral bandwidth on excitation side: 15 nm
(6) Spectral bandwidth on emission side: 15 nm, 30 nm (variable)
With this instrument, spectrum bandwidth is defined by half-
value width. Therefore, in order to separate a spectrum
completely, a wavelength interval of 30 nm or more is
required.
(7) Wavelength setting: By communication (e-line) or keyboard
Wavelength accuracy: ±3 nm
(8)
Wavelength repeatability: ±0.5 nm
(9)
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