The Series 477AV Handheld Digital Manometer is available with pressure, flow, and velocity measurements along with a number of other convenient features. The built-in air velocity and flow calculations provide accuracy and conserve time and error associated with manual calculations. Also featured on this unit are adjustable zero and span values for calibrating in the field, as well as a damping feature to compensate for the fluctuating of readings.
• Calculates and displays air velocity and volumetric air flow
• Rugged aluminum case protects instrument from damage during transport/use
• Nine (9) selectable English and metric engineering units
• Large, easy to read display with backlight for use in dark areas
• Stores up to 40 readings with minimum, maximum and average statistics
• Convenient all-in-one air velocity kit option available
| Service | Air and compatible gases |
| Wetted Materials | Consult factory |
| Accuracy | ± 0.5% FS, 60°F - 78°F (15.6°C - 25.6°C); ± 1.5% FS from 32°F - 60°F and 78°F - 104°F (0°C - 15.6°C and 25.6°C - 40.0°C) |
| Pressure Hysteresis | ± 0.1% of full scale |
| Pressure Limits | See chart on catalog page |
| Temperature Limits | 0°F - 140°F (-17.8°C - 60°C) |
| Compensated Temperature Limits | 32°F - 104°F (0°C - 40°C) |
| Storage Temperature Limits | -4°F - 176°F (-20°C - 80°C) |
| Display | 0.42 in (10.6 mm) 4 digit LCD |
| Resolution | See chart on catalog page |
| Units of Pressure | in W.C., ft. W.C., in Hg, PSI, oz/in2, mm W.C., cm W.C., mm Hg, mbar, Pa, kPa, hPa |
| Units of Velocity | fpm, fps, mph, m/h, m/s, k/h, knot |
| Units of Flow | cfm, m3/h, m3/s |
| Power Requirements | 9 V alkaline battery, installed non-functional, user replaceable |
| Weight | 10.2 oz (289 g) |
| Process Connections | Two (2) barbed connections for use with 1/8 in (3.18 mm) or 3/16 in (4.76 mm) ID tubing. Two (2) compression fittings for use with 1/8 in (3.18 mm) ID x 1/4 in (6.35 mm) OD tubing for 477AV-7 and 477AV-8 only |
| Agency Approvals | CE |
• Air flow monitoring, when used with a Dwyer® pitot tube
• Duct static pressure
• Commercial air balancing
• Building-zone pressure
Item
Description
Availability
Price
Protective magnetic rubber boot for manometers (manometer not included)
Normally ships in 1-2 Weeks
$35.00 CAD
Tough gray nylon pouch to protect and series 477AV manometer
Normally ships in 1-2 Weeks
$112.00 CAD
Air flow sensor with adjustable design extends insertion length to 36 in
Normally ships in 3-4 Weeks
$576.00 CAD
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Rubber tubing has less tendency to kink in storage and occupies less space, thus is best for portable work
Normally ships in 1-2 Weeks
$20.00 CAD
For use w/ Manometers, Magnehelic® Gages, Pressure Switches & other Controllers to pick up or sense static pressure drops
Normally ships in 1-2 Weeks
$27.00 CAD
Compression fitting connections, 1/8" tube to 1/8" NPT male
Normally ships in 3-4 Weeks
$11.00 CAD
Fast, convenient installation of pitot tubes in sheet metal ducts
Normally ships in 1-2 Weeks
$146.00 CAD
Plastic carrying case with foam liner for 475-1-AV air velocity kit - 13-1/2" x 10" x 2-3/8".
Normally ships in 3-4 Weeks
$196.00 CAD
475-T AV telescoping pitot tube air velocity kit less manometer
Normally ships in 3-4 Weeks
$1,058.00 CAD
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