What is the Dwyer 477AV-3 digital pressure gauge used for?

The Dwyer 477AV-3 measures air and compatible gases in HVAC systems, pneumatic equipment, and industrial gas applications. Its portable design and ±0.5% FS accuracy make it ideal for field technicians needing quick pressure diagnostics across 0–500 mbar range.

What are the specifications of the Dwyer 477AV-3 pressure gauge?

The Dwyer 477AV-3 offers 0–500 mbar measurement with ±0.5% FS accuracy. It displays pressure in multiple units (mbar, psi, kPa, mm w.c., in w.c., and others), operates from 0 to 140 °F, stores 40 readings, and includes temperature compensation from 32 to 104 °F.

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

3G Electric, an authorised industrial equipment distributor since 1990, supplies the Dwyer 477AV-3 across Singapore and Southeast Asia. We handle full logistics, customs clearance, and DDP delivery. Contact us for lead times and technical support tailored to your application.

How do I select the right digital pressure gauge for my pneumatic system?

Identify your maximum operating pressure, required accuracy (±0.5% FS is typical for field work), gas type, and display units. The Dwyer 477AV-3 suits low-pressure air and compatible gases up to 500 mbar. Verify temperature range and portability needs before purchase.

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

Technical Documents

(1)

Technical Document 1

PDF Document

Complete Solution

Need installation, maintenance, or a bundled quote?

Our engineers can help with product selection, system design, installation, and ongoing service — all from one partner.

Product + Service Bundle QuoteQuote

Quick Inquiry

DwyerMeasurement

Available to Order

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

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) 

View Full Spec Sheet

Worldwide Shipping

Air & sea freight

Datasheet on Request

Technical specs

1-Day Quote

SG-based team

Qty

WhatsApp Telegram

Create a free account to submit your RFQ and download technical documents.

Not sure this is the right part? Get a recommendation.

Pair with a Service

Installation & Commissioning

Professional setup and verification by our technicians

View

Ongoing Maintenance Plan

Scheduled preventive maintenance for this equipment

View

Product + Service Bundle

Combined quote for equipment, installation, and service

View

Solutions Engineering

Need guidance on product selection or system design?

Contact Our Engineering Team

Dwyer Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

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.

Browse all Dwyer products →Contact our engineers →