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1.0 GENERAL
Many applications require a small volume enclosure (less than 20
cubic feet), such as a sealed glove box, cabinet, etc. to be at a
humidity level that is less than room ambient. The Model 5471
Desiccant Dehumidification System is a closed loop system,
designed to reduce the relative humidity within a sealed chamber to
less than 10%. When used with an Automatic Humidity Controller
(such as an ETS 5112), the humidity inside the chamber can be
controlled to within
±
0.5% RH of the set-point. Using the ETS Model
5100 or Model 5200 Microprocessor Humidity Controllers, the
chamber may be maintained to within
±
0.1% RH of the set-point.
2.0 DESCRIPTION
The Model 5471 Dehumidification System is housed in a 6” W x 9.5” L
x 3.5” H (15.25 x 24.1 x 8.5 cm) plastic enclosure with vibration
isolating feet. The power switch and indicator light are located on the
front panel of the enclosure. When installed in the ETS Model 5532
Controlled Environment Chamber, the enclosure is not used and
power is by the Chamber.
A small, quiet linear air pump is mounted inside the enclosure. A
clear plastic column filled with 2.5 lbs. of renewable, indicating
Calcium Sulfate desiccant is mounted to the top of the enclosure.
The column is easily removable for replacing the desiccant.
The desiccant removes any moisture that is in the air. This dried air
is then forced back into the chamber. The desiccant contains an
indicator that turns the normally blue colored desiccant pink as it
absorbs moisture. When the cylinder is mostly pink, the desiccant
should be renewed or replaced. The desiccant can be renewed
approximately ten (10) times before having to be replaced.
UNIT SPECIFICATIONS
1. The average flow rate from the unit is 0.54 cfm (15 lpm).
2. The air is dried to a dewpoint of -100
°
F.
3. Capacity for water vapor up to 100 grams.
4. Power – 115 VAC/60 Hz, 0.35 Amps
230 VAC/50 Hz, 0.18 Amps
