5
2.0 CHAMBER
2.1 Description
The Model 5506 is a 9.0 cubic foot (0.26 cu. m), sealed chamber
fabricated from 0.25” (6mm) and 0.375” (9.5mm) clear and white acrylic
and measures 36”Wx24”Dx18”H (92x61x46 cm). Access to the chamber is
through a 12” (30.5cm) square opening. A heavy-duty, 0.5” (13mm) clear
acrylic door, secured by a single ½-turn latch, along with a compression
resistant gasket ensures an airtight seal when the door is locked. A 1.25”
(32mm) diameter pass-through is provided for passing cables and/or
tubing through the chamber wall. A pliable reusable sealer seals the
opening. The access door and all fittings are located on the left-hand side
of the chamber as shown in Figure 2.0-1. Additional holes may be
positioned elsewhere as an option.
Figure 2.0-1: Chamber access door and fittings
The humidity level within the chamber is reduced using either dry gas
(usually dry nitrogen or dry air) injected into the chamber or a
desiccant/pump drying system. The desiccator contains a self-indicating,
renewable drying agent (Anhydrous CaSO
4
) and is mounted externally to
the chamber. A small pump draws air from the chamber and forces it
through the desiccator back into the chamber. This circulating system is
capable of producing humidity levels below 10% RH within the chamber
(Actual lower humidity limit may be determined by the object placed in the
chamber).
Humidifier Input
Dry Air In
Sensor Fitting
Air Out
Fan Power
Cord
Access Hole
