Operating Precautions; Setting Up The Aem - Thermo Scientific Nicolet iS50 AEM User Manual

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iS50 AEM

Operating Precautions

Operating Precautions

Setting Up the AEM

Connecting a Purge Source
10 iS50 AEM User Guide
• Use only dried air or nitrogen to purge the AEM. The purge gas must be free of oil and
other reactive materials. Heat from the source or from laser absorption may ignite
flammable gases or reactive materials in purge gas.
• Some detectors that can be used with the iS50 AEM must be cooled with liquid nitrogen
before use. Follow your organization's Personal Protective Equipment (PPE) and handling
guidelines when working with liquid nitrogen.
For more information, refer to the site and safety guide that came with your Nicolet iS50
spectrometer and the iS50 AEM Site and Safety Supplement.
After the AEM has been installed by our representative, you are ready to connect a purge
source. This section explains how to connect purge and also describes how to make other
adjustments to the AEM to accommodate specific accessories, detectors and experiments.
• Connecting a Purge Source
• Cooling the AEM Detector
Your AEM might be purged with a source of dry air or nitrogen to prevent excessive moisture
or chlorinated and fluorinated solvents from damaging the optics. The purge gas requirements
for the AEM are the same as for the spectrometer. We recommend using dry air supplied by a
purge gas generator or pure air generator (available from us), or nitrogen. Please refer to your
Site and Safety Information guide for specific purge gas requirements.
WARNING Avoid explosion hazard. Never use a flammable, combustible, or toxic gas to
purge this instrument. The purge gas must be free of oil and other reactive materials. Heat
from the source or from laser absorption may ignite flammable gases or reactive materials
in purge gas. Use only dried air or nitrogen to purge your instrument.
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.
Thermo Scientific