Fiberglass Weatherproof Instrument Enclosure
This enclosure is designed to NEMA-4 specifications and
is a molded fiberglass reinforced material that is highly
corrosion resistant with stainless steel hardware.
Enclosure accessories are the same as for the steel
enclosures. Another advantage of the fiberglass is more
resistant to lightning damage while a disadvantage is that
the boxes are not as strong as steel and more susceptible
to vandalism. These enclosures are stocked in five
common sizes.
|
903-020 |
10" x 12" x 6" |
8 lbs. |
|
903-021 |
14" x 12" x 6" |
10 lbs. |
|
903-130 |
20" x 16" x 8"
|
13 lbs. |
|
903-135 |
24" x 20" x 8" |
16 lbs. |
|
903-140 |
30" x 24" x 10"
|
21 lbs. |
Drierite
Desiccants
Drierite is an all-purpose gypsum (calcium sulfate)
drying agent for the efficient and rapid drying of air to
maintain a dry atmosphere in enclosures with electronic
equipment to protect from mildew, corrosion, rust and
other deterioration caused by high humidity. Drierite can
be regenerated repeatedly for reuse.
Drierite Desiccant Bags
These non-woven crepe bags containing Drierite are used
to completely dry the air within an enclosure. The
disposable packets are dust tight and will protect
enclosures for many months when used within an adequate
moisture barrier.
A Drierite desiccant bag will reduce the humidity in a
sealed enclosure to a -100° F dew point in about 10 hours
or less. Materials packaged with these desiccant bags are
protected from corrosion and other harmful effects of
moisture contamination.
Drierite bags leave behind less residual moisture than
most other types of desiccant bags. Drierite also performs
well at elevated temperatures and will not release
absorbed moisture at less than 350° F. This is an
important consideration when shipping products during
variable weather conditions.
|
903-150 |
3 gm, 2" x 3 3/4" bag
|
0.1 lb. |
|
903-151 |
6 gm, 2" x 3 3/4" bag |
0.2 lb. |
|
903-152 |
1 oz., 3 3/4" x 4" bag
|
0.1 lb. |
|
903-153 |
2 oz., 3 3/4" x 4 3/4" bag
|
0.2 lb. |
|
903-154 |
4 oz., 3 3/4" x 6 1/4" bag |
0.3 lb. |
|
903-155 |
8 oz., 5 3/4" x 6 1/4" bag
|
0.5 lb. |
Relative Humidity Cards
These cards change color from blue to pink to indicate
the presence of moisture in the air. The 30% RH card
changes color when the moisture content rises to 30% RH.
The 10-60% RH card has 6 spots corresponding to 10, 20,
30, 40, 50 and 60% RH that change color individually when
the moisture content reaches the indicated level. Both
cards return to blue when placed in a dry environment.
These cards are especially useful in conjunction with
desiccant packs in an enclosure to indicate the relative
humidity within the enclosure and identify if packs need
changed out.
903-165
30% Relative Humidity card
0.1 lb.
903-166
10-60% Relative Humidity card
0.1 lb.
Compartment Desiccator
The
Drierite Compartment Desiccator solves the problem of
humidity in closed compartments. Extremely dry conditions
can be maintained in airtight enclosures or by placing a
Compartment Desiccator within the enclosure. These
inexpensive perforated aluminum cylinders serve to expose
the Drierite granules to the air and bring about rapid
water absorption.
This unit is capable of drying volumes of up to 200 cu.
feet. The desiccator is easily regenerated by placing a
complete unit in an oven for 2 to 3 hours at 450° F.
Included with each compartment desiccator is a 10-60%
Relative Humidity indicator card. This card will change
color to indicate the need for regeneration of the
compartment desiccator. The desiccator is made of
perforated aluminum and is 4" diameter x 16" height. It
holds 10 lbs. of Drierite desiccant and has a water
capacity of 1 pound.
903-175
Compartment Desiccator 12.5
lbs.
USGS Stilling Well Enclosures
USGS Stilling Well Enclosures are available and mount
on a standard galvanized corrugated pipe. They are
designed to accommodate the Type F and A-71 recorders or
shaft encoder systems, GS-71, GS-96 or other
instrumentation systems that require a stilling well.
Custom enclosures are available.
Kansas Style Enclosure
Kansas Style Enclosure is a galvanized steel enclosure
for 18" diameter culvert pipe. It comes with a 6' long 18"
diameter base with 24" x 24" x 14" instrument box.
Typically concrete is poured in and around the base to
stabilize the base and provide a reference elevation.
Slits and clean-out doors are provided for water entry and
sediment removal.
903-200
Kansas Style Enclosure 46
lbs.
903-205
Complete Stilling Well 122
lbs.
A-71 and Type F Recorder Enclosure
The A-71 and Type F Chart Recorder Enclosure is
designed to allow the recorder to be mounted directly over
stilling wells or bore holes. It is an 18" aluminum hinged
lockable cover with a 3/4 in. treated plywood base 30" x
21" x 15".
903-230
Chart Recorder Enclosure 21
lbs.
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