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Fig.
13-1, Mark II Model No. 25 Inclined-vertical manometer. (shown
with optional A-612 portable stand)
Fig.
13-2, Mark II Model No. 40-1 Inclined manometer
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Dwyer
Mark II series molded manometers are of the inclined and inclined-vertical
types. The curved inclined-vertical tube of the Model 25 gage provides
higher ranges with more easily read increments at low readings.
The Model 25 is excellent for general purpose work. The Model 40
inclined gage provides linear calibration and excellent resolution
throughout its range. The Model 40 is ideally suited for air velocity
and air filter gage applications. Both gage types are capable of
pressure measurements above and below atmospheric as well as differential
pressure measurements.
Construction
- Mark II manometers are economically prices, compact and available
in both stationary and portable configurations. Portable stand is
standard on Model 40, available as optional A-612 stand for Model
25. Construction is simple with virtually indestructible molded
white styrene-acrylonitrile housing, indicating tube and fluid wells,
molded ABS knobs and zero adjust plunger, shock mounted glass level
vial and leak proof "O" ring seals. Moderate overpressures are accommodated
by an overflow tank incorporated in the Model 25. Greater protection
is provided by float operated overflow traps in the Model 40. Scales
are lithograph printed on aluminum and epoxy coated.
Installation
- Mark II manometers can be mounted on any vertical surface
with the two mounting screws provided. A built-in spirit level simplifies
leveling before mounting screws are tightened. Simply fill the reservoir,
adjust fluid level to zero, connect the tubing, and the gage is
ready for operation.
Accessories
- Included with each Mark II manometer are two tubing connectors
for 1/8" pipe or sheet metal ducts, two mounting
screws, ¾ oz. Bottle of indicating fluid, red and green pointer
flags and complete instructions. The Model 25 also includes 8' of
flexible double column plastic tubing. Portable operation of the
Model 25 is made possible by the use of the optional A-612 portable
stand. A short piece of tubing can be slipped over the Model 25
pressure connections to contain the gage oil in transit. The Model
40 contains two 4 ½' lengths of clear plastic tubing, a plastic
swing-out stand and leveling screw for portable operation. It also
features convenient rapid shutoff pressure connections and integral
overpressure safety traps.
OEM
Specials - All Dwyer Mark II molded plastic manometers can be
supplied on OEM quantities with your name or special graphics and
scales.
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