Dwyer Instruments - Series Mark II: Mark II 40-1 Molded Plastic
Manometer
Dwyer Mark II series molded manometers are of the
inclined and inclined-vertical types. The Model 40 inclined gage
provides linear calibration and excellent resolution throughout its
range. Also, it is ideally suited for air velocity and air filter
gage applications. Capable of pressure measurements above and below
atmospheric as well as differential pressure measurements.
Construction
Mark II manometers are economically priced, compact
and available in both stationary and portable configurations. The
portable stand is a standard feature on Model 40. 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. 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,
3/4 ounce bottle of indicating fluid, red and green pointer flags
and complete instructions. The Model 40 contains two 4-1/2 foot
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.
Specifications
Accuracy: ±3% full scale.
Maximum Working Temperature: 130°F (54°C).
Maximum Internal Working Pressure: 15 psi (100 kPa).
Scale Length: Approx. 8-1/4" (21 cm).
Click
here for Dwyer Mark II 40-1 Data Sheet 
Click here for Dwyer Mark II 40-1 Service Manual
Below are other pressure ranges available for Series Mark II
Manometer:
|
Model
|
Range
|
Fluid Used
|
|
|
.1-0-1.0 in w.c.
|
Red oil, .826 s.g.
|
|
|
0-26 mm w.c
|
Red oil, .826 s.g.
|
|
|
10-0-250 Pa
|
Red oil, .826 s.g.
|
|
|
.2-0-2.4 in w.c.
|
Blue oil, 1.91 s.g.
|
|
|
0-60 mm w.c.
|
Blue oil, 1.91 s.g.
|
|
|
20-0-600 Pa
|
Blue oil, 1.91 s.g.
|
|
|
0-1.1 in w.c.
& 0-4200 fpm
|
Red oil, .826 s.g.
|
|
|
0-260 Pa
& 0-21 mps
|
Red oil, .826 s.g.
|
|
|
0-2.5 in wc.
& 0-6300 fpm
|
Blue oil, 1.91 s.g.
|
*Requires Pitot tube at additional cost. See Air Velocity
Section.
