Thermo Scientific Vanquish VF-D20, Operating Manual, Page: 101 / 182

6 • Operation
Vanquish Charged Aerosol Detectors Operating Manual Page 101
Parameters Description
Gas regulator pressure The default unit setting for the gas pressure corresponds
to the
Pressure Unit that is defined on the detector
configuration pages in the Chromeleon software.
Gas regulator
pressure nominal
Specifies the nebulizer gas pressure as specified on the
certificate that was shipped with the nebulizer.
Observe the notes in
section 6.5.2 Verifying the Nebulizer
Gas Pressure, page 98 .
Gas regulator
pressure
Displays the actual pressure of the gas supplied to the
nebulizer.
After you have set the nebulizer gas pressure, monitor the
GasRegPressure parameter until it reaches the setpoint.
Gas regulation mode Sets a specific nebulizer gas pressure for the analysis,
based on the gas pressure specified for the nebulizer from
the nebulizer certificate.
As a standard, the
Analytical mode is set.
For VH-detector only:
Two modes for regulating the nebulizer gas pressure in the
detector are available:
Analytical mode and MicroLC
mode.
For details on the gas regulation modes, see
section 6.7.6
Gas Regulation Mode, page 109 .
Peak width Defines the width of a chromatographic peak at the half of
the peak height. Specify a peak width for the narrowest
expected peak in your chromatogram.
As a standard, when you set the
Peak Width , Chromeleon
automatically calculates values for the Data Collection
Rate and the Filter Constant .
Data collection rate Defines the number of data points per second (Hz) that
the Chromeleon software collects from the detector and
stores as raw data.
For further information, see
section 6.7.3 Data Collection
Rate and Filter Constant, page 104 .
Filter constant Applies a filter constant to the output current to
electronically reduce the baseline noise during the
analysis.
For further information, see
section 6.7.3 Data Collection
Rate and Filter Constant, page 104 .