Dwyer Instruments SERIES 477AV | Data Sheet
SERIES 477AV | HANDHELD DIGITAL MANOMETER
Service
Air and compatible gases.
Wetted Materials
Consult factory.
Accuracy
±
Hysteresis
±
Limits
See chart on page 2.
Temperature Limits
0 to 140
Compensated Temperature Limits
32 to 104
Temperature Limits
-4 to 176
Display
0.42" (10.6 mm) 4
Resolution
See chart on page
of Pressure
in w.c., ft w.c.,
of Velocity
fpm, fps,
of Flow
cfm, m
Requirements
9 V alkaline
Weight
10.2
Process Connections
Two
Two compression fittings for use with 1/8" (3.18 mm) ID x 1/4" (6.35 mm) OD tubing for 477AV
Approvals
CE.
FEATURES/BENEFITS
• 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
• Convenient all-in-one air velocity kit option available
APPLICATIONS
• Air flow monitoring, when used with a Dwyer® pitot tube
• Duct static pressure
• Commercial air balancing
• Building-zone pressure
DESCRIPTION
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.
Air velocity kits include: Series 477AV handheld digital manometer, Model 166T 36" telescoping
pitot tube, (2) A-303 static pressure tips, (2) 4-1/2' lengths 3/16" ID rubber tubing, A-397 step drill
for 3/16" to 1/2" holes, A-532 AV slide chart, and fitted polyethylene case.
SPECIFICATIONS
0.5% FS from 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°C).
Pressure
Pressure
Storage
Units
Units
Units
Power
Agency
0.1% FS.
°F (-17.8 to 60°C).
°F (0 to 40°C).
°F (-20 to 80°C).
digit LCD.
2.
in Hg, psi, oz/in2, mm w.c., cm w.c., mm Hg, mbar, Pa, kPa, hPa.
mph, m/h, m/s, k/h, knot.
3
/h, m3/s.
battery, installed non-functional, user replaceable.
oz (289 g).
barbed connections for use with 1/8" (3.18 mm) or 3/16" (4.76 mm) ID tubing.
-7, -8 only.
DWYER INSTRUMENTS, INC.
DS-477AV | 12/16
DIMENSIONS
Model
Description
Model
Description
A
A
BOOT
160
Tough gray nylon carrying
Protective magnetic rubber boot
Stainless steel pitot tube, 12" (30.5 cm)
160F
160G
UHH
Straight stainless steel pitot
Averaging air flow grid
Soft carrying case
Pressure Range
Max Pressure
Resolution
0 to 1 in w.c.
5 psig 0.001 0 to 4 in
5 psig 0.001 0 to 10
5 psig 0.01 0 to 20 in w.c.
10 psig
0.01 0 to 40 in w.c.
10 psig
0.01 0 to 200 in w.c.
30 psig
0.1 0 to 10 psi
30 psig
0.01 0 to 20 psi
60 psig
0.01 0 to 30 psi
60 psig
0.01 0 to
150 psig
0.1
0 to 150 psi
200 psig
0.1
HOW TO ORDER
Use the bold characters from the chart below to construct a product code
477AV -4 -NIST
MAXIMUM PRESSURE / RESOLUTION
MANOMETER
w.c.
in w.c.
100 psi
SERIES
477AV - Handheld digital manometer
RANGE
-000 - 1 in w.c. / 0.25 kPa
-00 - 4 in w.c. / 1 kPa
-0 - 10 in w.c. / 2.5 kPa
-1 - 20 in w.c. / 5 kPa
-2 - 40 in w.c. / 10 kPa
-3 - 200 in w.c. / 50 kPa
SERIES
477 - Handheld digital manometer
RANGE
-000T - 1 in w.c. / 0.25 kPa
-00T - 4 in w.c. / 1 kPa
-0T - 10 in w.c. / 2.5 kPa
-1T - 20 in w.c. / 5 kPa
ACCESSORIES
-402A
-47X-
-12
Important Notice: Dwyer Instruments, Inc. reserves the right to make changes to or discontinue any product or service identified in this publication without notice. Dwyer advises its customers to obtain the latest version of
the relevant information to verify, before placing any orders, that the information being relied upon is current.
-4 - 10 psi / 70 kPa
-5 - 20 psi / 140 kPa
-6 - 30 psi / 200 kPa
-7 - 100 psi / 700 kPa
-8 - 150 psi / 1000 kPa
case
OPTIONS
-COC - Certificate of calibration
-FC - Factory calibration
-NIST - NIST traceable calibration certificate
AIR VELOCITY KIT
477 -0T -AV
OPTIONS
-AV - Air velocity kit
-C1
tube, 18" (45.7 cm)
DWYER INSTRUMENTS, INC.
DS-477AV | 12/16
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