PN 350-0453000-02
P a g e
|
3
Installing the FlexIR HWG with MCT Detector
Accessory Setup
Turn off the power to the FTIR spectrometer. Connect the interface detector cable of the HWG
accessory to the detector connector port of the spectrometer. Consult the FTIR manual for additional
information regarding the detector connector port and the proper software settings to select an
external detector.
The base optics of the Mid-IR FlexIR HWG Accessory fits into the sample compartment of the FTIR
spectrometer. The FlexIR HWG Accessory will include the baseplate mount for your FTIR spectrometer.
Place the accessory into the sample compartment of your FTIR and secure any lock-down screws.
MCT Liquid Nitrogen Filling and Stabilization
Fill the MCT detector with liquid nitrogen using the funnel included with the accessory.
WARNING:
Wear safety goggles and protective clothing when handling liquid nitrogen. Exposure to
liquid nitrogen will cause severe skin or eye injury.
Pour a small amount of liquid nitrogen into the funnel and wait for it to drain into the Dewar of the
detector. Add additional small amounts of liquid nitrogen until the detector is filled. Allow the detector
to stabilize for about 10 minutes and then top it off with a final amount of liquid nitrogen to completely
fill the liquid nitrogen Dewar. A lit green LED light indicates the Dewar contains liquid nitrogen and is
beginning the detector cooling process or is sufficiently cooled. It is not an indication that the accessory
is necessarily ready for use. Be sure to wait a 10 minute equilibrium time after the Dewar has been
completely filled. Observing a stable interferogram is another indication that the HWG accessory is
ready for measurements. An insufficiently cooled detector will produce a low and unsteady signal. The
red LED light indicates the accessory is not ready for use. If the red LED is illuminated during use check
that the detector Dewar is filled with liquid nitrogen.
Installing the HWG Probe
The next step is to install the HWG probe. Insert the black probe connector end into the base optics and
secure with hex screws provided with the accessory as shown on the following page.
