Beam Splitter; Detector; Dry Unit - Shimadzu IRAffinity-1 Instruction Manual

1.5.5

Beam Splitter

The beam splitter which Ge (germanium) is evaporated on the KBr (potassium bromide) substrate
is used as the standard.
The measurement wavenumber range is from 7,800 to 350 cm
CAUTION
Because these beam splitters have deliquescence and are very weak to humidity, take care to
handle them. If their element surface is damaged by dew condensation, etc. once, they cannot
be used any more. To cope with this, moisture resistant coating is applied on these beam
splitters used in the IRAffinity-1, and the dry unit is built in the main unit. Usually, no problem is
expected while the IRAffinity-1 is operating. Refer to
and check the humidity and silica gels while you do not use IRAffinity-1.
1.5.6

Detector

The DLATGS detector of high sensitivity equipped with the temperature controller is used as the
standard. The detector is called Pyroelectric detector.
Because the Curie temperature of the DLATGS is 61 °C, this detector needs temperature control.
When a liquid nitrogen cooling MCT detector is needed, use a SSU-8000MCT-Second Sample
Compartment Unit with the MCT detector.
1.5.7

Dry Unit

The IRAffinity-1 keeps the inside of the interferometer at low humidity by driving the dry unit even
while the IRAffinity-1 is not used. Accordingly, always let the power plug of the IRAffinity-1 be
connected to the AC power supply to keep power supply. Confirm that the orange LED (dry
indicator) in the lower right portion of the front face is lit. If it is expected that the main power supply
will be OFF for a long time, refer to
and silica gels while you do not use IRAffinity-1. While the main power supply is OFF, the silica gel
should be replaced approximately once every two weeks.
Chapter 5 "Maintenance and Inspection"
Chapter 5 "Maintenance and Inspection"
1.5 Interferometer
-1
.
and check the humidity
IRAffinity-1
1-13