1 Configuration and Function of the Instrument
1-8
(3) Lamp
The lamp is used as a monitor light source at the time of the read-out unit
inspection.
(4) Evacuation system
The light at the wavelength of 200 nm or less which is called the vacuum
ultraviolet area is absorbed by oxygen in the air.
Therefore, the spectrometer inside is kept at the pressure of 2Pa or less by the
evacuation system.
Vacuum pump
① Power On switch Starts the vacuum pump.
② Power Off switch Stops the vacuum pump.
③ Oil gauge Indicates the oil level.
④ Pump Leak Valve Used to prevent the lowering of the pump oil
level when the pump is idle.
(The oil mist separator on the photo above is an option)
● Check that the oil level of the vacuum pump is within the red circle
of the oil gauge.
● When the temperature is low such as in winter, make sure that the
room temperature is high enough before turning ON the power of
the pump.