TSI Instruments 3062 - Removing the Silica Gel

Model 3062 Diffusion Dryer 5
The operational time per regeneration of silica gel depends on the
aerosol flowrate through the diffusion dryer. The silica gel near the
inner tube absorbs the moisture first. Hence, occasional shaking to
replace the silica gel crystals near the inner tube with other crystals
improves the drying power of the diffusion dryer.
The following data represents the drying capacity of the dryer. It
was tested in conjunction with TSI’s Model 3076 Constant Output
Atomizer, which has an aerosol flowrate of 3.5 liters per minute.
Table 2
Drying Capacity of the Dryer
How Used
Measured Relative
Humidity at Exit (%)
No diffusion dryer 60
With one Model 3062 20
With two Model 3062s (in series) 8
With one Model 3062 but after one
hour of operation
28
After shaking the Model 3062 to
rearrange the silica gel crystals
20
Removing the Silica Gel
To remove the silica gel, do the following:
1. Disconnect the inlet and outlet connections and remove the
dryer from its brackets (refer to Figure 1).
2. Holding the dryer vertically with the water trap at the top,
remove the end cap on the inlet side.
!
Important
Do not attempt to unscrew the opposite end. It is glued in place and attached to
the inner screen. Forcing the outlet end cap will damage the inner screen.
3. Turn the dryer upside-down and the desiccant will flow out into
a tray or other container.