Inficon HAPSITE ER, Руководство по эксплуатации

Страница: 420 / 436

19 | Glossary INFICON
420 / 436 074-471-P1E HAPSITE ER Operating Manual
19 Glossary
Air peak A response by the mass spectrometer to the components of air. This set of
compounds typically elutes 1 to 1.5 minutes from the start of analysis.
Alignment A part of the tuning process which assures that the mass peaks fall at their
calibrated position on the mass scale.
AM Analytical module, also called the HAPSITE ER.
AMDIS Automated Mass Spectral Deconvolution and Identification System Software
AMU Atomic mass unit. A unit that is used for indicating mass on an atomic scale
Analyte That portion of a sample which comprises compounds to be analyzed.
AutoTune A process that occurs when the instrument is initially started up; it automatically
performs mass alignment, resolution adjustment and adjustment of relative
intensity of the peaks. AutoTune will take place once the heated zones have
reached the proper temperature.
Baseline A measure of the intensity of the background noise of the mass spectrometer.
This is determined using the Noise Check feature in the Tune program.
Carrier gas The pure inorganic gas used to aid the flow of sample gas through the
chromatograph for analysis. VOC-free nitrogen is the carrier gas for the HAPSITE
ER.
Column The column is a long glass capillary which is lined with a material (called the
“stationary phase”) with which the analytes interact based on their physical
characteristics, slowing their flow. The degree of this interaction progressively
separates the different compounds from one another during elution.
DAC Digital to analog converter. An element of the electronic circuitry which converts
the microprocessor’s digital instructions to the analog requirements for control of
the instrument.
DOC Declaration of Contamination document. All chemicals that have been run
through the HAPSITE ER must be listed on the form prior to service and repairs.
Elution time The elapsed time from injection of a specific compound onto the column until the
compound exits the column (same as retention time).
ET Elapsed time of sample run. Used in Survey method instead of retention time.
Filament A hot wire in the ionizer from which electrons are emitted.
Filament delay This specifies the amount of time between the start of analysis and the time which
the HAPSITE ER turns on the filament. Filament delay allows components of the
air peak or solvents to pass through the mass spectrometer before the filament is
turned on.
GC Gas chromatograph
GUI Graphical user interface