This positive-pressure
configuration allows filtration of particles to ensure a uniform,
contamination-free flow of air to the work surface. It thus provides
a mini-cleanroom environment for particle-sensitive operations
in the forensic industry.
This positive-pressure configuration allows filtration of
particles to ensure a uniform, contamination-free flow of
air to the work surface. It thus provides a mini-cleanroom
environment for particle-sensitive operations in microelectronics,
biotech, and many other industries. To construct your system,
select a stainless steel blower module and filter housing.
Note that two of each housing are required for twin (72"W
or 90"W) stations.
Select the appropriate blower for your application: a 740
CFM or a 1200 CFM variable speed impeller. The higher-output
blower is recommended for applications with multiple filters
or that require a high-level air flow. Finally, pick the filter(s)
that provide the cleanliness rating you require (refer to
the efficiency ratings below). The performance illustration
provides specific information on the air flow each filter
provides when used with the Terra blower module. Unless otherwise
specified, blower/filter modules come installed as indicated
in the illustration, with the higher-rated filter positioned
downstream in the filter housing.
Specifications
Blowers:
1) 740 CFM, 1560 RPM variable speed impeller
2) 1200 CFM, 1675 RPM variable speed
impeller
Note: Both blowers rated at no static
pressure. See performance charts below for performance
under filter load.
Filter Housing:
28.75"W x 13.75"D x 7.50"H
Blower Housing:
21.62"W x 13.50"D x 7.25"H. Includes power switch, speed
control and power cord receptacle (cord not included)
Prefilter:
12" x 12" fiberglass prefilter (included)
Average flow: 800 CFM
Data above reflect performace with 1200 CFM blower.
Laminar
Flow Station
To Order:
1. Select the hood of the appropriate size and material
Universal
Hood Nominal Dimensions
Type
A
B
C
D
E
F
G
H
Small
Single
16
24
4
33
36
17
23
5
Large
Single
19
28
8.5
42.5
45
21
27
8.5
Small
Twin
16
24
4
66
72
17
23
5
Large
Twin
19
28
8.5
85
90
21
27
8.5
Polypropylene
Hood (shown without bottom)
2.
Select the blower and filter modules
Type
Universal
Hoods (includes access shield of materials indicated
in parentheses)
* Dimensions: 22.75W
x 13.50"D x 7.25"H (Blower Module), 30"W x 13.75" x
7.75"H (Filter Housing).
** HEPA (High-Efficiency Particulate Air) Filters rated 99.99% efficient
@ 0.3 µm particles;
ULPA (Ultra-Low Penetration Air) Filters rated 99.999% efficient @ 0.12
µm particles.
Note: Twin stations require two blower modules, two filter housings, and
two filter sets
3.
Select a Stand
Vibration-isolated stand
with free-standing hood frame isolates vibrations caused
by the hood blower
Non-isolated (one-piece)
stand
The Universal Hood's bottomless design allows it to be
placed on virtually any work surface. For optimal performance,
however, Terra recommends one of these hood stands, available
in two designs (see descriptions below).
Both designs feature raised lips to hold the hood securely
in place. All frames (whether isolated or not) are made
of rigid square tubing with a white epoxy finish, and include
stainless steel scuff sleeves to prevent scuffing along
the bottom leg support. The work surface stands 32" above
the floor. Be sure to select the size (large or small, single
or twin) to match your hood.
Choose the work surface to suit your application (see ordering
table). Subsurface polypropylene plenum chambers are available
for perforated benchtops on a custom basis. These plenums
(designed according to your specific requirements) serve
two important functions: during chemical processing, they
collect hazardous spills; and during laminar flow operations,
they eliminate air-flow deflection towards the operator
(an important concern when hazardous fumes may be present).
Vibration-Isolated Stands feature a two-part work surface and hood frame to isolate
the work area from blower vibration, which can interfere with
microscope operation.
Vibration-Isolated
Stands (Select Hood Frame and desired surface. All stands and
tables include leveling feet)
All prices and specifications
are subject to change without notice. Crating charges apply to selected
items.
Call or click here for
more information on terms and conditions.