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Dwyer Digital pressure gauge 0-500Mbar Dwyer 477AV-3 - Measurement
DwyerMeasurement

Dwyer Digital pressure gauge 0-500Mbar Dwyer 477AV-3

Dwyer 477AV-3 is a digital pressure gauge measuring air and compatible gases from 0–500 mbar with ±0.5% FS accuracy. Operating range spans 0 to 140°F, storing up to 40 readings. Ideal for HVAC, pneumatic systems, and…

SKU 3G-CBM-04574

Also listed as: MES 25003 · MES-25003

Brand
Dwyer
Item
Digital pressure gauge 0-500Mbar Dwyer 477AV-3
Category
Measurement
UNSPSC
41112412 — Pressure gauge
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Technical specs
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

Dwyer
service
air and compatible gases
accuracy
±0.5% FS
pressure range
0-500 mbar
units pressure
in w.c., ft w.c., in Hg, psi, oz/in2, mm w.c., cm w.c., mm Hg, mbar, Pa, kPa, hPa
storage capacity
40 readings
temperature operating
0 to 140°F (-17.8 to 60°C)
temperature compensated
32 to 104°F (0 to 40°C)

Datasheet Content

TEST & DATA SERIES 477AV HANDHELD DIGITAL MANOMETER Measures Pressure, Flow and Velocity; ±0.5% Accuracy 2-13/16 [71.44] 1-1/16 [26.99] 41/64 [16.27] BARBED FOR 1/8 OR 3/16 ID TUBING 5-57/64 [149.68] VIDEO ON LINE 29/32 [23.02] The Series 477AV Handheld Digital Manometer is now available with pressure, flow, SPECIFICATIONS and velocity measurements along with a number of other convenient features. The Service: Air and compatible gases. Units of Pressure: in w.c., ft w.c., in Hg, built-in air velocity and flow calculations provide accuracy and conserve time and error Wetted Materials: Consult factory. psi, oz/in2, mm w.c., cm w.c., mm Hg, associated with manual calculations. Also featured on this unit are adjustable zero and Accuracy: ±0.5% FS, 60 to 78°F (15.6 mbar, Pa, kPa, hPa. span values for calibrating in the field, as well as a damping feature to compensate for to 25.6°C); ±1.5% FS from 32 to 60°F Units of Velocity: fpm, fps, mph, m/h, the fluctuating of readings. and 78 to 104°F (0 to 15.6°C and 25.6 m/s, k/h, knot. to 40.0°C). Units of Flow: cfm, m3/h, m3/s. FEATURES/BENEFITS Pressure Hysteresis: ±0.1% FS. Power Requirements: 9 V alkaline • Calculates and displays air velocity and volumetric air flow Pressure Limits: See chart. battery, installed non-functional, user • Rugged aluminum case protects instrument from damage during transport/use Temperature Limits: 0 to 140°F (-17.8 replaceable. • 9 selectable English and metric engineering units to 60°C). Weight: 10.2 oz (289 g). • Large, easy to read display with backlight for use in dark areas Compensated Temperature Limits: 32 Process Connections: Two barbed • Stores up to 40 readings with minimum, maximum and average statistics to 104°F (0 to 40°C). connections for use with 1/8˝ (3.18 Storage Temperature Limits: -4 to mm) or 3/16˝ (4.76 mm) ID tubing. Two Manometers, APPLICATIONS 176°F (-20 to 80°C). compression fittings for use with 1/8˝ • Air flow monitoring Display: 0.42˝ (10.6 mm) 4 digit LCD. (3.18 mm) ID x 1/4˝ (6.35 mm) OD tubing Portable • Duct static pressure Resolution: See chart. for 477AV-7 and 477AV-8 only. Agency Approvals: CE. MODEL CHART Velocity Range Available Pressure Units Pressure in mm mm cm Maximum Model Range fpm m/s psi in Hg kPa w.c. Hg mbar w.c. Pa ft w.c. oz/in2 hPa w.c. Pressure 477AV-000 0 to 1.000 in w.c. 4004 20.34 - 0.0736 0.2491 1.000 1.868 2.491 25.40 249.1 0.0833 0.5780 2.491 2.540 5 psig 477AV-00 0 to 4.000 in w.c. 8009 40.69 0.1445 0.2942 0.996 4.000 7.473 9.96 101.6 996 0.3333 2.312 9.964 10.16 5 psig 477AV-0 0 to 10.00 in w.c. 1.266k 64.33 0.3613 0.7355 2.491 10.00 18.68 24.91 254.0 2491 0.8333 5.780 24.91 25.40 5 psig 477AV-1 0 to 20.00 in w.c. 1.791k 90.97 0.7225 1.471 4.982 20.00 37.36 49.82 508.0 4982 1.667 11.56 49.82 50.80 10 psig 477AV-2 0 to 40.00 in w.c. 25.33k 128.7 1.445 2.942 9.96 40.00 74.73 99.6 1016 9964 3.333 23.12 99.64 101.6 10 psig 477AV-3 0 to 200.0 in w.c. 56.63k 287.7 7.225 14.71 49.82 200.0 373.6 498.2 5080 - 16.67 115.6 498.2 508.0 30 psig 477AV-4 0 to 10.00 psi 66.62k 338.4 10.00 20.36 68.95 276.8 517.1 689.5 7031 - 13.07 160.0 689.5 703.1 30 psig 477AV-5 0 to 20.00 psi 94.22k 478.6 20.00 40.72 137.9 553.6 1034 1379 - - 46.13 320.0 1379 1406 60 psig 477AV-6 0 to 30.00 psi 115.4k 586.2 30.00 61.08 206.9 830.4 1551 2069 - - 69.20 480.0 2068 2109 60 psig 477AV-7 0 to 100.0 psi 210.7k 1070 100.0 203.6 689.5 2768 5171 6895 - - 230.7 1600 6895 7031 150 psig 477AV-8 0 to 150.0 psi 258.0k 1311 150.0 305.4 1034 4152 7757 - - - 346.0 2400 - - 200 psig OPTIONS To order add suffix: Description -NIST NIST traceable calibration certificate Example: 477AV-1-NIST ACCESSORIES Model Description A-402A 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) UHH-C1 Soft carrying case A-402A UHH-C1 A-47X-BOOT A-47X-BOOT Protective magnetic rubber boot (manometer not included) DWYER INSTRUMENTS, INC. | dwyer-inst.com 171 TestData_2021.indb 171 7/15/20 2:11 PM

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Dwyer Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

Dwyer 477AV-3 is a digital pressure gauge measuring air and compatible gases from 0–500 mbar with ±0.5% FS accuracy. Operating range spans 0 to 140°F, storing up to 40 readings. Ideal for HVAC, pneumatic systems, and industrial gas applications requiring portable pressure monitoring.

Frequently Asked Questions

Where can I buy the Dwyer 477AV-3 digital pressure gauge in your region?

3G Electric stocks and supplies the Dwyer 477AV-3. We deliver to your location, your location, and CALABARZON regions. We handle customs documentation, logistics coordination, and USD invoicing. Contact us for availability and lead time.

What is the lead time and shipping for the Dwyer 477AV-3 to your region?

Lead time depends on stock status and is confirmed on request. 3G Electric arranges all logistics to your your region location, manages customs clearance, and provides tracking. Request a quote for exact delivery schedule.

What pressure ranges and units does the Dwyer 477AV-3 measure?

The Dwyer 477AV-3 measures 0–500 mbar with ±0.5% FS accuracy. It displays in multiple units: psi, kPa, mbar, in Hg, mm Hg, in w.c., ft w.c., cm w.c., mm w.c., Pa, and hPa—ideal for HVAC and pneumatic system diagnostics.

Used in

Common applications for Dwyer
Combustion air-filter monitoring — Magnehelic Series 2000 on burner air-intake filter banks
Clean-room and pharmaceutical pressurisation — Magnehelic / Capsuhelic differential-pressure gauges
HVAC fan-discharge static pressure — Mark II inclined-vertical manometers on AHU test points
Filter-blockage alarms — Photohelic Series 3000 combined gauge/switch on air-handling units
BMS-integrated pressure monitoring — Digihelic DH3 with 4–20 mA output for building management

Dwyer Products

3G Electric supplies Dwyer measurement. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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