Dwyer 477AV-000 Digital Pressure Gauge 80mm Differential Pressure Manometer
Product Introduction
The Dwyer Series 477AV Handheld Digital Manometer is a portable precision instrument designed for on-site measurement of pressure, air velocity, and flow in HVAC, industrial, and environmental applications. With built-in calculation functions and field-calibration capabilities, it eliminates manual errors and streamlines testing processes.
Product Features
Triple Measurement Modes:
Pressure: in. w.c., psi, kPa, mbar, etc.
Velocity: fpm, m/s, mph, knots.
Flow: cfm, m³/h, m³/s.
High Accuracy:
±0.5% FS at 15.6–25.6°C (60–78°F); ±1.5% FS in extended temperatures.
Field Calibration:
Adjustable zero/span values and damping function for fluctuating readings.
Portable Design:
9V battery operation (user-replaceable), 10.2 oz (289 g) weight for handheld use.
NIST Calibration:
Optional traceable certification for critical applications.
Technical Specifications
| Parameter | Detail |
| Model | 477AV-000 (0–1.00 in. w.c. range) |
| Pressure Range | 0–1.00 in. w.c. (0–250 Pa) |
| Media | Air and compatible gases |
| Display | 0.42" (10.6 mm) 4-digit LCD with backlight |
| Temperature Range | Operating: -17.8–60°C (0–140°F); Compensated: 0–40°C (32–104°F) |
| Process Connections | Two barbed fittings for 1/8" or 3/16" ID tubing (compression fittings for high-pressure models) |
| Units of Measurement | 15+ pressure units, 6 velocity units, 3 flow units |
| Battery Life | [Typical life: 100 hours continuous use] |
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Dwyer 477AV-000 Digital Pressure Gauge 80mm Differential Pressure Manometer Images
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