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Summary of Contents for Thermo Scientific Nicolet iS50 AEM
- Page 1 Nicolet iS50 FT-IR Spectrometers iS50 AEM User Guide 269-295900 Revision A February 2013...
- Page 2 © 2013 Thermo Fisher Scientific Inc. All rights reserved. Windows and Excel are either trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries. All other trademarks are the property of Thermo Fisher Scientific Inc. and its subsidiaries. For U.S.
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Page 3: Table Of Contents
AEM This document describes the Thermo Scientific iS50 AEM (Auxiliary Experiment Module) which is an optional sampling module for your Nicolet™ iS™50 spectrometer. The document covers the following topics. Contents • About the AEM • Important Features • Operating Precautions •... - Page 4 We provide complete instructions for using the software in the OMNIC Help system and in Getting Started with OMNIC Software. Instructions for most accessories are included with the particular accessory. iS50 AEM User Guide Thermo Scientific...
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Page 5: Is50 Aem
Many of the detectors and accessories that can be installed in the spectrometer can also be installed in the AEM including: • All Thermo Scientific Smart Accessories • Other baseplate-mounted sample compartment accessories • iS50 TGA interface, which can be connected to a compatible thermal gravimetric... -
Page 6: Important Features
From the Front • Inside the Sample Compartment • Back Panel Features Before operating the AEM, you should be familiar with the fundamentals of FT-IR spectroscopy and the operating characteristics of your FT-IR spectrometer. iS50 AEM User Guide Thermo Scientific... - Page 7 • Detector fill port. Used to add liquid nitrogen to the dewar to cool an MCT detector. before each use. For more information, see “Cooling the AEM Detector.” • External beam port (left side). Light from the spectrometer passes through this port to the AEM sample compartment input optics. Thermo Scientific iS50 AEM User Guide...
- Page 8 25-pin connector. Note This is not a pass-through connector. If the accessory has a 15-pin connector, use the sample compartment accessory adaptor cable that came with your spectrometer to connect it. iS50 AEM User Guide Thermo Scientific...
- Page 9 Analog ground (for +12 detectors and -12 detectors) Sample compartment motor + Sample compartment motor - Sample compartment detector + Sample compartment detector - SDA (for detector communication) SCL (for detector communication) SDA (for digital communication) SCL (for digital communication) Thermo Scientific iS50 AEM User Guide...
- Page 10 AEM Important Features Figure 4. Sample Compartment Dimensions iS50 AEM User Guide Thermo Scientific...
- Page 11 The cable from this connector attaches to the Accessory port on the back of the spectrometer. (The spectrometer has a right and left Accessory port. Use the one closest to the AEM.) Related Topics • Connecting a Purge Source Thermo Scientific iS50 AEM User Guide...
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Page 12: Operating Precautions
NOTICE Do not use argon as a purge gas. Argon is an insulator and prevents the system from cooling properly. NOTICE When chlorinated or fluorinated solvents are present, purge is required. Failure to purge could cause accelerated corrosion of optical components and void the system warranty. iS50 AEM User Guide Thermo Scientific... - Page 13 Spectrometer Help Topics, available from the Help menu in OMNIC software. Sidewall adapters are also used to secure the optical filter holder. Sidewall adapters are included with many optical filter kits. They may also be purchased separately. Thermo Scientific iS50 AEM User Guide...
- Page 14 600 cm An MCT detector must be cooled with liquid nitrogen before you collect data. The MCT detector dewar is located in the back detector position under the dewar cover on the AEM. iS50 AEM User Guide Thermo Scientific...
- Page 15 A small amount of liquid nitrogen spillage will not harm the instrument, but do not overfill the detector or pour too quickly. Cooling the detector too quickly may cause the dewar to rapidly boil off or spill out excess amounts of liquid nitrogen. Thermo Scientific iS50 AEM User Guide...
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Page 16: Checking Performance
4. Select the type of beamsplitter installed in the spectrometer. 5. Select an available AEM detector. 6. Make sure the check boxes for all the other tests are cleared. iS50 AEM User Guide Thermo Scientific... -
Page 17: Collecting Spectra
This section explains how to configure your AEM workflow and collect spectra. These topics are covered: • Preparing the AEM for Sampling • Configuring Your AEM Workflow • Measuring a Sample with the AEM Thermo Scientific iS50 AEM User Guide... - Page 18 After the workflow is configured, you simply press the Touch Point to start the workflow. To configure your AEM workflow 1. Start OMNIC software. iS50 AEM User Guide Thermo Scientific...
- Page 19 Notice that Sample Compartment (upper left pane) is set to AEM, and below that pane is a list of iS50 experiments for the AEM. The selected experiment is highlighted and its associated settings are visible in the dialog box. Thermo Scientific iS50 AEM User Guide...
- Page 20 Max/min Shows the default limits of the current detector’s spectral range. The Max/Min limits can be reduced to eliminate spectral regions that provide no additional information about the sample. iS50 AEM User Guide Thermo Scientific...
- Page 21 “Finding Peaks Above a Specified Height” in OMNIC Help Topics. • Threshold. The Y value above which peaks can be found. • Sensitivity. Determines how readily shoulders on peaks and small peaks in the baseline will be found. Thermo Scientific iS50 AEM User Guide...
- Page 22 AEM and the settings you selected in the AEM Touch Point Setup dialog box. To collect data for a typical mid-IR experiment, follow these steps. For more information, refer to “Conducting an Experiment” in Spectrometer Help Topics. iS50 AEM User Guide Thermo Scientific...
- Page 23 8. Press the Touch Point (or choose OK). The final spectrum appears in the selected spectral window. Related Topics • Configuring Your AEM Workflow • Preparing the AEM for Sampling Thermo Scientific iS50 AEM User Guide...
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Page 24: Maintenance
The desiccant should be replaced at least once each year regardless of the color of the humidity indicator. Depending on your lab environment, your may need to replace the desiccant more often. iS50 AEM User Guide Thermo Scientific... - Page 25 Replacing Sample Compartment Windows The AEM has a window installed on each side of the sample compartment that seals the spectrometer from moisture and other contaminants. Figure 11. Sample compartment windows Window These windows must be used whether or not the AEM is purged. However, the windows may need to be removed temporarily for certain experiments and spectral ranges or to allow purge to flow into an accessory.
- Page 26 • Do not allow liquids to come into contact with the sample compartment windows. • If your instrument is purged, you can leave the purge on while you replace the windows to prevent ambient air from entering the AEM. iS50 AEM User Guide Thermo Scientific...
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Page 27: Troubleshooting
Windows”. If the signal is still not satisfactory after you have replaced the windows, contact our service representative in your area. Note If you can’t tell the condition of the windows by inspecting them, remove the windows. If the signal intensity improves significantly, replace the windows. Thermo Scientific iS50 AEM User Guide... - Page 28 AEM. If the beam does not appear in either sample compartment, contact our service representative in your area. iS50 AEM User Guide Thermo Scientific...
- Page 29 AEM Purge Input sample compartment connectors AEM Purge Out sample compartment dimensions to cool the detector connectors to prepare for sampling in AEM sample compartment to store on AEM back panel Touch Point Thermo Scientific iS50 AEM User Guide...
- Page 30 Measurement Time option to set for AEM to set for AEM external beam port method for AEM quantitative analysis for AEM mid-IR region to set for AEM Far-IR region to set for AEM iS50 AEM User Guide Thermo Scientific...
- Page 31 AEM needed for AEM sample peaks purge recommendation to find with AEM for AEM scans purge shutters average for AEM and AEM to set for AEM purge source to connect for AEM Thermo Scientific iS50 AEM User Guide...
- Page 32 Touch Point Setup dialog box for AEM troubleshooting for AEM unit, Y-axis to set for AEM unknown sample to identify with AEM windows to replace for AEM workflow to configure for AEM Y-axis unit to set for AEM iS50 AEM User Guide Thermo Scientific...
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