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Dwyer - Instruments Inc, U.S.A. |
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Durablock®
Solid Plastic Stationary Gages
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Dwyer
solid plastic stationary gages - or draft gages - are offered in inclined
and vertical (well-type) styles for highly accurate laboratory or
general industrial service, for measurement of low range gas and air
pressures, positive, negative or differential. To assure the accuracy
required in instruments of this type, all machining of bores and wells
is to the highest standards of precision backed by Dwyer's years of
experience in the fabrications of acrylic instruments. |
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 DESIGN
AND SERVICE FEATURES
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1"
Thick Acrylic Plastic Body is a solid block, virtually unbreakable,
stable and free of the danger of distortion.
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Drilled
Bore Accurate to ±.0002" free of bends or crooks, will not
require recalibration because of distortion.
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Selected
Gage Oil with high wetability characteristics forms a consistent,
well shaped meniscus for most accurate readability.
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Adjustable
Reflective Polished Aluminum Scales with thumbscrew locking
for easy zeroing.
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Parallax-Free
Reading for maximum accuracy and consistency is achieved
by simply aligning the meniscus with its image reflected in
the scale.
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Over-Pressure
Safety Traps prevent loss of fluid due to over range pressures
or surges in pressure. (Not required on No. 215.)
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Leveling
Adjustment for inclined style gages is achieved by simply
loosening a locking thumb screw on the side or bottom of the
gage, adjusting with reference to the integral sensitive ground
glass bubble level and retightening.
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Heavy
Gauge Steel Mounting Panels are gray hammerloid finished.
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Kits
For Air Filter Gage Service |
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 Dwyer
solid plastic gages and other gages are available in kits especially
developed for air filter gage service. They include the gage, two
static pressure tips with integral compression fittings ad two 5
foot lengths of ¼" aluminum tubing. The static pressure tips are
installed in the duct upstream and downstream of the filter and
connected to the gage to provide a continuous visual indication
of the static pressure drop across the filter. When the filter's
resistance in terms of static pressure drop reaches the maximum
specified by the filter manufacturer, it is an indication that the
filter should be cleaned or replaced. For complete details on Dwyer
Air Filter Gage kits, refer to Pressure Section,
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