Galvanic Applied Sciences 943-TGS-CE, Operation Manual

Page: 63 / 158

Revision 5 63 August 2021
The current value of the integration time is displayed in the
Old Value
field. A new integration
period can be entered into the New Value field using the white numerical keys and the decimal
point key. Once the desired value has been entered into the New Value field, press
↵
, then
highlight the
Okay
button and press
↵
again. To discard changes, highlight the
Cancel
button
and press
↵
.
After manually editing the integration period, check the indicated Peak Height. If the peak height
displays 32000, this indicates that the peak height is off scale, as the full scale for the
spectrometer reading is 32000 A/D counts. The integration period should be reduced until the
indicated peak height drops below 32000. If the indicated peak height is less than 24000, the
integration period should be increased. If the integration time is already at 1000 ms, this
indicates a problem with the analyzer’s optical system. Refer to Section 7.2 for more details on
troubleshooting analyzer problems.
4.6.1 Factory Reference
The Factory Reference is a zero gas transmission spectrum that was saved at the factory
at the time of analyzer factory calibration. When the Show Factory Reference checkbox is
checked by using the F4 / F3 keys to highlight and then pressing
↵
to check the box, the
factory reference spectrum is shown superimposed on the same axes as the currently
displayed spectrum. The Spectrum panel with the Factory Reference being displayed is
shown in Figure 36.
Figure 36: Factory Reference
Take note of the following rules-of-thumb when comparing the pink trace of the factory
reference with the red trace of the current transmission spectrum:
•
The factory reference should be largely similar to the current transmission spectrum
when the analyzer is in back purge mode. If it is not, there is likely an issue with the
analyzer optical system. Refer to Section 7.2 for troubleshooting techniques.
•
The factory reference should be notably different from the current transmission
spectrum, as it is in Figure 36, when the analyzer is in sampling mode. If the sampling