Mark II Model 28 Dwyer Manometer Range 0-10,500 fpm
· Mark II Manometers are economically priced, compact and available in both stationary and portable configurations, 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 ring seals. Moderate overpressures are accommodated by an overflow tank. Scales are lithograph printed on aluminum and epoxy coated.
· 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.
· 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 25 also includes 8 feet of flexible double column plastic tubing. Portable operation is made possible by the use of the optional A-612 portable stand. A short piece of tubing can be slipped over the pressure connections to contain the gage oil in transit.
Model | Range | Fluid Used |
Mark II 25 | 0-3 in w.c. | Red oil, .826 s.g. |
Mark II 26 | 0-7 in w.c. | Blue oil, 1.91 s.g. |
Mark II 27* | 0-7000 fpm | Red oil, .826 s.g. |
Mark II 28* | 0-10,500 fpm | Blue oil, 1.91 s.g. |
Mark II MM-80 | 0-80 mm w.c. | Red oil, .826 s.g. |
Mark II MM-180 | 0-180 mm w.c. | Blue oil, 1.91 s.g. |
Mark II M-700PA | 10-0-700 Pa | Red oil, .826 s.g. |
*Requires Pitot tube at additional cost. See Air Velocity Section.
Accuracy +-3% FS