Specifications

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6. Contents: 1 lb. of #8 mesh CASO
4
Indicating Desiccant.
7. All connections are made using 5/16” ID tubing. ¼” ID x 5/16” OD
hose barb adapters are included to adapt from the ¼” OD fittings on
the ‘Side Interface Panel’ to the desiccant column.
8. Plastic cap is fitted with “O-Ring” gasket.
9. Desiccator coil spring is made of cadmium plated steel.
The system delivers air dried to a dew point of -100°F. At room
temperature, the system will lower the humidity in the Model 518 Chamber
from 50% RH to 12% RH in about 2 hours.
2.2.1.3 Desiccant Dehumidification System Set-Up
1. Place the desiccant column somewhere near the chamber. Next to or on
top of the chamber are good locations.
2. Cut 2 pieces of the 5/16” ID tubing long enough to connect the desiccant
column to the ‘Side Interface Panel’ of the Chamber.
3. Connect one piece of the tubing from the fitting labeled “DEHUMIDIFY
OUT” on the ‘Side Interface Panel’ to the lower fitting on the desiccant
column.
To connect the hose barb adapters to the ¼” OD tubing fittings: Push
the barb adapter into the fitting as far as possible. The tube will lock into
place automatically. To release the adapter, push in on the collar of the
fitting and gently pull out the adapter.
4. Connect the second piece of tubing between the upper fitting on the
desiccant column and the fitting labeled “DEHUMIDIFY IN” on the ‘Side
Interface Panel’ of the Chamber.
5. Cover the chamber vent with the supplied 1” green Caplug.
6. The chamber vent, inside of the Chamber, is the 1” opening on the right
wall (the green plug should be placed in the opening). The vent passes
through to the outside right wall, the 1” barb on the outside should remain
open.
7. Set the Model 518 Humidity Controller set-point to a value below the
ambient humidity (refer to Model 518 Microprocessor Humidity Controller
Operation).