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2.12 Powering Analyzer from Charger
The analyzer can be contnuously powered by ts charger by connectng
the charger to the analyzer n the followng sequence:
1. Swtch ON the analyzer without the charger attached.
Note: Connecting the charger to an analyzer that is switched
OFF causes the unit to enter its charging mode, which in turn
prevents the analyzer from being switched ON.
2. Plug the charger nto the approprate AC wall socket (or 12 VDC when
usng the optonal vehcle charger). Then plug the charger's output
connector nto the analyzer's chargng socket (Fgure 1, Item H).
The analyzer wll now contnuously run, untl the charger s removed
and the unt swtched OFF —the analyzer wll not turn OFF wth the
charger attached.
2.13 High Humidity Gas Sampling
When usng the 2825 / 2830 to draw gas samples from areas wth hgh
levels of humdty (e.g., ncubators wth water jackets), nstall both a
particulate filter (P/N 54-0548) and desiccant filter (P/N 07-1645) on the
analyzer by first connecting the particulate filter to the analyzer's inlet
gas fitting, and then connecting the desiccant filter to the particulate fil-
ter usng a 2–3 nch pece of rubber tubng (cut from the tubng suppled
wth the analyzer). Use the remanng pece of tubng to connect to the
ncubator. See Fgure 4.
Replace the desiccant filter when its silica gel turns a pinkish color. Note
that the filter's silica gel can be rejuvenated by either running pure N
through the filter at a low flow rate, or by baking the filter in a 250°F
(120°C) oven untl ts blue color returns.
When storing the desiccant filter, install rubber caps (P/N 19-0001) on
both ends of the filter. The caps will seal the filter when not in use and
extend ts lfe.
Instruction 19-9320
CO
Analyzer 2825/2830/2835
2
(2825 / 2830)
2
9
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