Thermo Scientific MIRAN 205B Series, Инструкция по эксплуатации

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Chapter 6 Change Application
6-4
SPECTRUM SCAN
This feature invokes the screen shown below. It allows scanning of all measurable
wavelengths. Before starting this analysis, configure a site and set the logging
parameters.
NOTE
: If the unit is not configured for scanning with the ThermoMatch Spectrum
Correlation Software, menu items 3 – 6 will not appear on the Scanning Lib menu.
Press “1” to scan a user-defined 2

m section of the filter (from 8.000

m to 14.000

m)
at long pathlength. This is a peak picker routine that allows the identification of the
absorbance characteristics within the defined region. This aids in the development of
user calibrations.
Press “2” to perform a peak pick at short pathlength.
Press “3” through “6” to invoke a scan routine. They all scan the fixed bandpass filters
and the entire linear variable filter region. Full scan runs a slightly higher quality scan by
more signal averaging, and it takes more time. Fast scan provides quicker results at the
expense of a slightly noisier signal. These features are optional and can assist in
identifying unknown compounds using the ThermoMatch Spectrum Correlation
Software, or to establish a spectral profile for future reference. The “L” and the “S”
denote the pathlength to be used in the application.
┌────────────────────────────────────────┐
│╒══ CURRENT APPLICATION ══╕ SCANNING LIB │
││ │ 1=Peak-L │
││ │ 2=Peak-S │
││ │ 3=Fast-L │
││ METHANE: ---- ppm │ 4=Fast-S │
││ │ 5=Full-L │
││ │ 6=Full-S │
│└───────────────────────┘ │
└────────────────────────────────────────┘
Spectrum Scan Screen
If there was no previous application or if the previous application was not colnfigured for
scan, the Choose Log Defaults screen appears. Press “1” to optimize the logging
parameters (Log Mode = Single Sample, Log Interval = 1 cycle, and Log Start = Auto),
or press “2” to keep the present logging parameters.