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6
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Operation
Page 98
Vanquish Diode Array Detectors (VH-D10) Operating Manual
Parameters
Description
Autozero
Perform an automatic null balancing. The current detector
signal is interpreted as 0. Therefore, no absorbing sample
should be in the flow cell when
Autozero
is performed.
TIP
When you start the data acquisition or perform an
autozero, the shutter in the light path before the flow cell
is opened automatically. After the data acquisition, close
the shutter, if required.
Leak detection
Leak detection is enabled as a standard when the detector
is shipped (
Leak Sensor
Mode = Enabled
). This is the
preferred setting.
Wavelength validation
Perform the wavelength validation as required. A
holmium-oxide glass filter is moved into the light path of
the lamp and is used to validate the wavelength accuracy.
For further information, see
section 7.5 Performing a
Wavelength Validation, page 121
Wavelength calibration
If the wavelength validation failed, perform a calibration
of wavelengths. During the calibration, the detector
determines the measured wavelength of the D-alpha line
of the UV lamp. If the detector determines that the D-
alpha line differs from the expected value, the detector
will adjust its wavelength calibration.
For further information, see
section 7.5 Performing a
Wavelength Validation, page 121
Lamphouse
temperature
-and-
Spectrograph
temperature
Two temperature signal channels are available in the
Properties
dialog box of the detector:
Lamphouse
Temperature
and
Spectrograph Temperature
. The lamp
and the spectrograph of the detector are very sensitive
(regarding drift) to changes in temperature. The
temperature signal channels can be used for
troubleshooting purposes:
In case of a long-term baseline drift, a varying lamp house
temperature signal indicates strong temperature
variations.
In case of a long-term baseline drift and a constant lamp
house temperature, a changing spectrograph temperature
indicates a detector defect (defective optics insulation or
defective spectrograph temperature control).
Select one or both signal channels to record the
temperatures. Chromeleon generates the appropriate
channels for recording the temperatures of the detector
lamp house and spectrograph.
Summary of Contents for Vanquish VH-D10
Page 4: ...Contacting Us Page 4 Vanquish Diode Array Detectors VH D10 Operating Manual...
Page 44: ...4 Unpacking Page 44 Vanquish Diode Array Detectors VH D10 Operating Manual...
Page 80: ...5 Installation Page 80 Vanquish Diode Array Detectors VH D10 Operating Manual...
Page 110: ...6 Operation Page 110 Vanquish Diode Array Detectors VH D10 Operating Manual...
Page 162: ...7 Maintenance and Service Page 162 Vanquish Diode Array Detectors VH D10 Operating Manual...
Page 190: ...11 Appendix Page 190 Vanquish Diode Array Detectors VH D10 Operating Manual...
Page 191: ...12 Index Vanquish Diode Array Detectors VH D10 Operating Manual Page 191 12 Index...
Page 195: ...12 Index Vanquish Diode Array Detectors VH D10 Operating Manual Page 195...