Series 477AV Handheld Digital Manometer

Measures Pressure, Flow and Velocity; ±0.5% Accuracy

The SERIES 477AV Handheld Digital Manometer is now 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.

Product Applications

  • Air flow monitoring, when used with a Dwyer® Pitot tube
  • Duct static pressure

Models & Ordering

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Model Description Usually Ships Price Order
477AV-0
Ships: Same Day
Price: $325.00
Digital manometer, range 0-10.00" w.c., air velocity/flow modes. Same Day $325.00 Order
477AV-00
Ships: Same Day
Price: $325.00
Digital manometer, range 0-4.00" w.c., air velocity/flow modes. Same Day $325.00 Order
477AV-000
Ships: Same Day
Price: $346.00
Digital manometer, range 0-1.00" w.c., air velocity/flow modes. Same Day $346.00 Order
477AV-1
Ships: Same Day
Price: $325.00
Digital manometer, range 0-20.00" w.c., air velocity/flow modes. Same Day $325.00 Order
477AV-2
Ships: Same Day
Price: $185.00
Digital manometer, range 0-40.00" w.c., air velocity/flow modes. Same Day $185.00 Order
477AV-3
Ships: Same Day
Price: $185.00
Digital manometer, range 0-200.00" w.c., air velocity/flow modes. Same Day $185.00 Order
477AV-4
Ships: Same Day
Price: $185.00
Digital manometer, range 0-10.00 psi, air velocity/flow modes. Same Day $185.00 Order
477AV-5
Ships: Same Day
Price: $185.00
Digital manometer, range 0-20.00 psi, air velocity/flow modes. Same Day $185.00 Order
477AV-6
Ships: Same Day
Price: $185.00
Digital manometer, range 0-30.00 psi, air velocity/flow modes. Same Day $185.00 Order
477AV-7
Ships: Same Day
Price: $185.00
Digital manometer, range 0-100.00 psi, air velocity/flow modes. Same Day $185.00 Order
477AV-8
Ships: Same Day
Price: $185.00
Digital manometer, range 0-150.00 psi, air velocity/flow modes. Same Day $185.00 Order

Can't find what you need? Build Your Custom Part. Use our Product Configurator

Specifications

Service:
Air and compatible gases.
Wetted Materials:
Consult factory.
Accuracy:
±0.5% FS, 60 to 78°F (15.6 to 25.6°C); ±1.5% FS from 32 to 60°F and 78 to 104°F (0 to 15.6°C and 25.6 to 40.0°C).
Pressure Hysteresis:
±0.1% of full scale.
Pressure Limits:
See chart on catalog page.
Temperature Limits:
0 to 140°F (-17.8 to 60°C).
Compensated Temperature Limits:
32 to 104°F (0 to 40°C).
Storage Temperature Limits:
-4 to 176°F (-20 to 80°C).
Display:
0.42" (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 barbed connections for use with 1/8" (3.18 mm) or 3/16" (4.76 mm) ID tubing. Two compression fittings for use with 1/8" (3.18 mm) ID x 1/4" (6.35 mm) OD tubing for 477AV-7 and 477AV-8 only.
Agency Approvals:
CE.

Features

  • Calculates and displays air velocity and volumetric air flow
  • Rugged aluminum case protects instrument from damage during transport/use
  • 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

Accessories

Model Number Description Usually Ships Price Order
Telescoping pitot tube 166T Telescoping pitot tube Same Day $189.00 Order
Rubber latex tubing has less tendency to kink in storage and occupies less
space, thus is best for portable work. 3/16 A-201 Rubber latex tubing has less tendency to kink in storage and occupies less space, thus is best for portable work. 3/16" ID, 9' length. Same Day $7.50 Order
Portable static pressure tip, for 3/16 A-303 Portable static pressure tip, for 3/16" ID rubber or plastic tubing with 4" insertion. Same Day $9.95 Order
A-375 Compression fitting connections, 1/8" tube to 1/8" NPT male. 1-2 Weeks $3.30 Order
Rugged step drill, quickly provides true round holes in thin materials, no center punch needed to start, automatically de-burrs drilled hole, high speed steel, drills 3/16 A-397 Rugged step drill, quickly provides true round holes in thin materials, no center punch needed to start, automatically de-burrs drilled hole, high speed steel, drills 3/16" through 1/2" holes in 1/16" increments. Same Day $60.00 Order
A-463 Plastic carrying case with foam liner for 475-1-AV air velocity kit - 13-1/2" x 10" x 2-3/8". 1-2 Weeks $74.00 Order
A-472T 475-T AV telescoping pitot tub air velocity kit less manometer. Less Than 1 Week $325.00 Order
Carrying case for most manometers; tough, gray nylon pouch, double zippered with belt loop A-402A Carrying case for most manometers; tough, gray nylon pouch, double zippered with belt loop Same Day $41.75 Order
Rubber boot for manometers (manometer no included). A-47X-BOOT Rubber boot for manometers (manometer no included). Same Day $12.50 Order
Soft carrying case UHH-C1 Soft carrying case Same Day $39.00 Order

Videos

Model Chart

EXAMPLE 477AV 2 NIST 477AV-2-NIST, 477AV Differential Pressure Manometer w/ AV and Flow, 40” w.c./10 kPa Range, NIST Calibrated
RANGE   000
00
0
1
2
3
4
5
6
7
8
  1” w.c. / 0.249 kPa
4” w.c. / 0.995 kPa
10” w.c. / 2.49 kPa
20” w.c. / 5 kPa
40” w.c. / 10 kPa
200” w.c. / 50 kPa
10 psi / 70 kPa
20 psi / 140 kPa
30 psi / 200 kPa
100 psi / 700 kPa
150 psi / 1000 kPa
OPTIONS     COC
FC
NIST
Certificate of Calibration
Factory Calibration Certificate
NIST Traceable Calibration Certificate

Product Literature

Manuals

Catalog Pages

Product Data Sheet

SlideShare

Approvals

Drawings

Questions

Question
We use series 475-6-FM Mk III digital manometer. What is the recommended calibration interval?
Answer
We do not have an official recommended calibration interval. However, we would suggest checking the calibration at least once or twice a year depending on the applciation and how often the unit is used.
Question
Is there a manometer that is compatible with chlorine gas and sodium hydroxide (bleach)?
Answer
Unfortunately, we do not have any manometers available that can handle chlorine gas or sodium hydroxide (bleach).

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Apps