Galvanic Applied Sciences 943-TGX-CE, Operation Manual

Page: 56 / 151

Revision 4 56 April 2020
4.6 Spectrum Panel
The Spectrum panel shown in Figure 30 shows the current transmission spectrum being
received by the control computer from the analyzer’s spectrometer.
Figure 30: Spectrum Panel
The transmission spectrum shows the intensity of ultraviolet light, in A/D counts, being received
at every pixel of the spectrometer. The spectrometer has a total of 2048 pixels, with an
approximate 0.3nm resolution between the pixels. The x-axis of the spectrum is unlabelled, but
it shows the wavelength range with the shortest wavelengths at the left and the longest
wavelengths on the right. Only a range of 530 of these pixels is actually used for calculating the
concentration values. The higher the A/D counts are for a given wavelength, the greater the
intensity of the light transmitted through the measurement cell to the detector at that specific
wavelength is. In the bottom right corner of the panel are a series of three fields giving data
about spectrometer parameters, shown in Figure 31.
Figure 31: Spectrometer Parameters
These three parameters are described in Table 11.