Metrohm NIRS XDS SmartProbe Analyzer - Manual (Page 8)

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Green when stable operating temperature is reached
Green when module is properly attached
Vision Software™ offers an easy user interface, using the familiar interface provided with previous
generations of NIR instrumentation. All functions required to perform identification, qualification, and
quantitation are provided, with easy tools for interpretation of results. Vision offers full instrument
diagnostics, with built-in acceptance specification tables for all tests. Vision stores all results in a
diagnostic database for later lookup, with control chart views of results tracked over time.
The menu-driven, validated Vision Software package meets all requirements of CFR 21 Part 11,
covering Electronic Records and Signatures. Vision comes with a full manual for operation and theory
of operation, with complete instructions for analytical development.
The XDS Analyzer provides 0.5nm data points, and uses several innovative methods to assure
wavelength accuracy and repeatability. Wavelength positions are traceable to NIST SRM-1920a.
Because SRM-1920a does not have certified wavelengths above 2000 nm, an additional wavelength
absorber is included in the calibration standard, to provide stable wavelengths beyond 2000 nm.
These additional wavelengths have been independently measured on calibrated instrumentation to
ascertain the wavelength positions used.
Instrument communication is through RJ-45 network connections, which eliminates issues involved
with long runs of RS-232 cable. An Internet Protocol (IP) address is dynamically requested upon
connection. This address may be permanently installed, if required for network purposes. The RJ-45
connection also permits remote interrogation and diagnostics checks of the instrument, if necessary
and authorized.
The instrument enclosure is completely sealed to prevent contamination by dust or other substances.
The cooling fans operate outside the main enclosure, and are thermally linked to internal fans that
maintain a constant temperature inside the instrument enclosure. There is no airflow drawn into the
optics chamber instrument. An external fan-cooling loop is provided in the side chassis, with thermal
conduction from the inside of the optics chamber. This avoids contamination of the instrument in
dusty environments. An air filter is built into the door of this chamber. For cool environments, heaters
are embedded in the thermal transfer block to raise temperature when required.
Lamp changes are performed through a single panel on the rear surface of the instrument. The lamp
is easy to remove and replace, and requires no special tools or expertise.