Dwyer 477AV Handheld Digital Manometer
by Dwyer Instruments
Last updated Mar 29, 2026 · 2 revisions
Multi-function digital manometer with built-in air velocity and flow calculations, ideal for Pitot tube duct traverses and pressure testing.
6.0 - Good Custom · $261 3 Features
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www.dwyeromega.com
About This Product
The Dwyer 477AV Handheld Digital Manometer measures positive, negative, and differential pressure with 0.5% full-scale accuracy across multiple ranges from 0-1 to 0-200 inches WC. Built-in air velocity and flow calculations with up to 40 stored readings make it ideal for HVAC Pitot tube duct traverses. Features include backlit 4-digit LCD, audible/visual over-range alarms, field-calibration capability, and damping for fluctuating readings.
FSH Score Breakdown
Ease of Use 7.5
Features 7.0
Support 7.0
Value 7.0
Integrations 3.0
AI Capabilities 0.5
Customer Reviews
Features
3 features confirmed across
3categories· Showing confirmed capabilities only
Reporting & Analytics1feature
ReportingStores up to 40 readings with minimum, maximum and average statistics
Compliance & Safety1feature
Airflow CalculationsCalculates and displays air velocity and volumetric air flow
Platform & Customization1feature
Unit Conversion9 selectable English and metric engineering units
Pricing
- Model
- Custom
- Starting at
- $261
- Notes
- Price varies by model/range: 477AV-00 (0-4 in wc) ~$410, 477AV-6 (0-30 psi) ~$261. Multiple models from 0-4 in wc to 0-150 psi. Accuracy: +/-0.5% FS. Measures negative, positive, and differential pressure. Built-in air velocity and flow calculations. Selectable English/metric units. Backlit display. Saves up to 40 readings. Auto-shutoff after 20 min. Field-calibratable (zero + span). Damping feature for fluctuating readings.
