Specifications

Analyzer 2825/2830/2835

Instruction 0019-9320 9

2.12 Powering Analyzer from Charger

The analyzer can be continuously powered by its charger by connecting

the charger to the analyzer in the following sequence:

1. Switch 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 into the appropriate AC wall socket (or 12 VDC when

using the optional vehicle charger). Then plug the charger’s output

connector into the analyzer’s charging socket (Figure 1, Item H).

The analyzer will now continuously run, until the charger is removed

and the unit switched OFF —the analyzer will not turn OFF with the

charger attached.

2.13 High Humidity Gas Sampling (2825 / 2830)

When using the 2825 / 2830 to draw gas samples from areas with high

levels of humidity (e.g., incubators with water jackets), install both a

particulate ﬁ lter (P/N 0054-0548) and des ic cant ﬁ lter (P/N 0007-1645)

on the analyzer by ﬁ rst con nect ing the par tic u late ﬁ lter to the analyzer’s

inlet gas ﬁ tting, and then connecting the des ic cant ﬁ lter to the particu-

late ﬁ lter using a 2–3 inch piece of rubber tubing (cut from the tubing

sup plied with the analyzer). Use the re main ing piece of tubing to connect

to the incubator. See Figure 4.

Replace the desiccant ﬁ lter when its silica gel turns a pink ish color. Note

that the ﬁ lter’s silica gel can be rejuvenated by either run ning pure N

through the ﬁ lter at a low ﬂ ow rate, or by baking the ﬁ lter in a 250°F

(120°C) oven until its blue color re turns.

When storing the desiccant ﬁ lter, install rubber caps (P/N 0019-0001) on

both ends of the ﬁ lter. The caps will seal the ﬁ lter when not in use and

extend its life.