PerkinElmer OilExpress 4, User Manual

Page: 43 / 152

Overview of the OilExpress 4 System . 43
Spectrometer Module
The OilExpress 4 spectrometer module comprises a Spectrum Two FT-IR spectrometer with a
sample shuttle and a flow cell installed in the sample compartment (Figure 20). If you have a
DUO system you will have two spectrometer modules.
Figure 20 Sample compartment with sample shuttle fitted
The spectrometer is mounted on a drip tray. Refer to
Spectrometer and FCM Mounting
System
on page 53.
The Spectrum Two FT-IR spectrometers are fitted with a DTGS (deuterated triglycine sulfate)
MIR detector.
Spectrometer Sample Compartment
The sample compartment is located at the front of the spectrometer.
The infrared beam enters the compartment through an aperture on the left. After passing
through the sample, it enters the detector area through an aperture on the right side of the
sample compartment. The spectrometer supplied has either KBr or ZnSe sample
compartment windows.
CAUTION
Potassium Bromide (KBr) is a hydroscopic material and KBR windows
although coated, can be damaged by high levels of humidity. Refer to the
Spectrum Two User’s Guide
(part number L1050228) supplied with your
spectrometer for details.
If you spill liquid in the sample compartment, wipe it up quickly.
The Spectrum Two supplied with the OilExpress 4 System has an internal, automated filter
wheel, which can be used to insert a reference material in the beam path. The filter wheel
provided contains a polystyrene sample, an NG11 Schott Glass reference, and a methane cell
(for use in the AVI Calibration).