BUCHI Nano Spray Dryer B-90 - Manual (Page 29)

4 Description of function
29 B-90 Operation Manual, Version B
Inlet filter
Dehumidifier
B-296
Exhaust gas
T
COOL
Nano Spray Dryer B-90
Basic
Aspirator
T
OUT
P
T
IN
Outlet filter
FI
Condensate
Control
Feed
Product
a
b
c (optional)
a Inlet filter to filter out dust and particles
b Aspirator as air supply source
c Optional Dehumidifier B-296
NOTE
The Aspirator is also used with a Nano Spray Dryer B-90 Advanced in ‘closed loop’ configuration
with the Inert Loop B-295 or Dehumidifier B-296 to recirculate the inert gas (N
2
or CO
2
).
4.5 Sample feed circulation with peristaltic pump
The peristaltic pump circulates the sample feed between the product vessel and the spray head. It
assures a constant substance feeding for the spray generation.
NOTE
Dry run of the pump and the spray head does not damage the instrument or parts of it in the
medium term.
4.6 Particle collector
Solid particles are accumulated at the wall of the cylindrical particle collecting electrode by a strong
electrical field. The electrical field is generated via high voltage.
4.7 Outlet filter
The outlet filter (order no. 051656) prevents environmental pollution by particles. It is installed inside
the housing of the Nano Spray Dryer B-90. See section 5.5.1 for information about access and
exchange.