Dwyer Instruments 477AV Specifications

SERIES 477AV

[23.02]

2-13/16 [71.44]

HANDHELD DIGITAL MANOMETER

Measures Pressure, Flow and Velocity; ±0.5% Accuracy

TEST EQUIPMENT

29/32

41/64

[16.27]

1-1/16

[26.99]

BARBED FO 1/8 OR 3/16 ID TUBING

5-57/64

[149.68]

The new, upgraded SERIES 477AV HANDHELD DIGITAL MANOMETER is now

available with pressure, ow, and velocity measurements along with a number of other convenient features. The 477AV uses a highly accurate differential pressure sensor to offer ± 0.5% full scale accuracy. It displays negative, positive, and differential pressure. For pressure, ow, and velocity there are selectable English and metric units, as seen in the specications. The built-in air velocity and ow calculations provide accuracy and conserve time associated with cumbersome manual calculations. Additionally, up to 40 readings can be saved—perfect for HVAC technicians making Pitot tube traverses of airow readings across a duct. The accuracy that the 477AV series provides is critical to maintenance personnel and technicians who require a highly accurate standard to check their instrumentation or equipment, to ensure proper performance. The digital display offers a backlight feature for easier viewing in darker areas. Meanwhile, battery conservation is monitored and displayed in the event of low battery voltage. The digital manometer will automatically shut off after 20 minutes to prevent battery drain. This shut-off time can be reduced or disabled if desired. Series 477AV can be eld-calibrated by setting zero and span values. Furthermore, the damping feature compensates for the uctuating readings by averaging input values to display a more stable readout. Included is an audible and visual alarm to warn over ow, over pressure or over velocity.

Manometer, Portable

The Series 477AV features a menu structure outline printed on the back of the aluminum casing. Comprehensive written instructions, a wrist strap, and a 9 Volt alkaline battery are also included.

FEATURES/BENEFITS

• Pressure, ow, and velocity measurements

• Measures positive, negative, and differential pressure

• Operates up to 100 hours on a single 9 volt battery

• Numerous selectable English and metric units

• Stores up to 40 readings

• Menu structure detailed on the back of aluminum casing

• Aluminum case protects instrument from damage during transport/use

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 fullscale.

Pressure Limits: See chart. 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.

ACCESSORIES Model Description A-402A

UHH-C1

OPTION To order add sufx: Description

-NIST NIST traceable calibration certicate

Example: 477AV-1-NIST

Carrying case; tough gray nylon pouch protects any Series 477AV Manometer; double zippered for quick and easy access, with a belt loop that snaps closed; 7-1/2˝H x 3˝W x 2-1/4˝D (191 x 76 x 57 mm) Soft carrying case

Units of Pressure: in w.c., ft. w.c., in Hg,

, mm w.c., cm w.c., mm Hg,

psi, oz/in mbar, Pa, kPa, hPa. Units of Velocity: fpm, fps, mph, m/h, m/s, k/h, knot.

Units of Flow: cfm, m 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 ttings 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.

/h, m3/s.

A-402A

UHH-C1

MODEL CHART

Model 477AV-000 477AV-00 477AV-0 477AV-1 477AV-2 477AV-3 477AV-4 477AV-5 477AV-6 477AV-7 477AV-8

DWYER INSTRUMENTS, INC. | www.dwyer-inst.comXXX

Pressure Range

0-1.000 in w.c. 0-4.000 in w.c. 0-10.00 in w.c. 0-20.00 in w.c. 0-40.00 in w.c. 0-200.0 in w.c. 0-10.00 psi 0-20.00 psi 0-30.00 psi 0-100.0 psi 0-150.0 psi

Velocity Range Available Pressure Units

0-4004 0-8009 0-1.266k 0-1.791k 0-1.791k 0-56.63k 0-66.62k 0-94.22k 0-115.4k 0-210.7k 0-258.0k

20.34

40.69

64.33

90.97

128.7

287.7

338.4

478.6

586.2 1070 1311

0.1445

0.3613

0.7225

1.445

7.225

10.00

20.00

30.00

100.0

150.0

0.0736

0.2942

0.7355

1.471

2.942

14.71

20.36

40.72

61.08

203.6

305.4

0.2491

0.996

2.491

4.982

9.96

49.82

68.95

137.9

206.9

689.5 1034

1.000

4.000

10.00

20.00

40.00

200.0

276.8

553.6

830.4 2768 4152

1.868

7.473

18.68

37.36

74.73

373.6

517.1 1034 1551 5171 7757

2.491

9.96

24.91

49.82

99.6

498.2

689.5 1379 2069 6895

25.40

101.6

254.0

508.0 1016 5080 7031

249.1 996 2491 4982 9964

0.0833

0.3333

0.8333

1.667

3.333

16.67

13.07

46.13

69.20

230.7

346.0

0.5780

2.312

5.780

11.56

23.12

115.6

160.0

320.0

480.0 1600 2400

hPa cm w.c.

2.491

9.964

24.91

49.82

99.64

498.2

689.5 1379 2068 6895

2.540

10.16

25.40

50.80

101.6

508.0

703.1 1406 2109 7031

Maximum Pressurefpm m/s psi in Hg kPa in w.c. mm Hg mbar mm w.c. Pa ft w.c. oz/in

5 psig 5 psig 5 psig 10 psig 10 psig 30 psig 30 psig 60 psig 60 psig 150 psig 200 psig