TSI Instruments SIZER EEPS 3090, Руководство по эксплуатации и обслуживанию

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General Care, Troubleshooting and Service 6-27
If the size distribution looks strange with filtered air, a good way to check if it
is caused by a noisy channel is to collect the raw electrometer data. This
can be done by selecting
View|Instrument Status from the menu. This is a
good screen to check on whether any instrument parameters are out of
range (indicated by a yellow background for a reading).
Note: The following section is for advanced troubleshooting and should be
used only by experienced users or with the help of a TSI
representative.
Secure a filter to the inlet of the EEPS spectrometer (large white filter with
fitting included in accessory kit). Using the EEPS software, open a new file.
Start a run and from the Properties dialog select
Electrometer Current
using the drop-down control under the Data Collection and Display section
(this is normally set to Concentration) as shown in Figure 6-27.
Figure 6-27
Advanced Run Settings
Collecting data in this mode will collect only the raw electrometer data. The
graphs will update to display electrometer current instead of concentration.
Figure 6-29 shows what a noisy channel might look like in this mode.
Although you could try to zero out this noise, it may give errors since this
channel is much higher than the others (indicating contamination). A bigger