Dwyer 477AV Digital Manometer with ±0.5% Accuracy

Price Negotiable
Price: Negotiable
MOQ: 1PCS
Delivery Time: 5-8 work days
Brand: Dwyer
Product Description
Dwyer 477AV Digital Manometer with ±0.5% Accuracy
Attribute Value
Accuracy ±0.5% FS, 60 To 78°F (15.6 To 25.6°C)
Material Consult Factory
Pressure Range See Chart
Size 80MM
Product Name Dwyer 477AV-000 Digital Manometer
Gauge Differential Pressure Gauges
Series 477AV Handheld Digital Manometer
Dwyer 477AV Digital Manometer front view showing LCD display Dwyer 477AV Digital Manometer side view showing pressure ports

The Series 477AV Handheld Digital Manometer is a versatile measuring instrument designed to accurately measure pressure, air velocity, and flow in various applications. With ±0.5% full-scale accuracy (at 60-78°F/15.6-25.6°C), it eliminates manual calculation errors by integrating built-in velocity and flow algorithms. The device features field-calibratable zero/span adjustments and a damping function to stabilize fluctuating readings, making it ideal for HVAC diagnostics, ductwork testing, and industrial airflow management.

Product Features
Multi-Parameter Measurement
  • Measures pressure (in w.c., psi, kPa, etc.), air velocity (fpm, m/s), and flow (cfm, m³/h)
  • Auto-calculates velocity/flow from pressure inputs, reducing field errors
Accuracy & Stability
  • ±0.5% FS accuracy in optimal temperatures (60-78°F), ±1.5% in extended ranges (32-104°F)
  • ±0.1% FS hysteresis for consistent readings across pressure cycles
Field Calibration
  • Adjustable zero/span values for on-site calibration without external tools
  • Damping feature to smooth out transient pressure fluctuations
Display & Units
  • 0.42" 4-digit LCD with selectable units for pressure, velocity, and flow
  • Supports 12+ pressure units (e.g., in Hg, mbar), 6 velocity units, and 3 flow units
Portability & Power
  • Lightweight design (10.2 oz/289 g) with 9V alkaline battery (user-replaceable)
  • Low-power mode for extended field use
Technical Specifications
Parameter Details
Model Range Examples 477AV-0: 0-10.00" w.c. / 477AV-4: 0-10.00 psi / 477AV-7: 0-100.00 psi
Accuracy ±0.5% FS (15.6-25.6°C), ±1.5% FS (0-40°C)
Pressure Limits Varies by model (e.g., 477AV-0: ~2 psi burst pressure)
Temperature Range Operating: 0-140°F (-17.8-60°C); Storage: -4-176°F (-20-80°C)
Display 0.42" 4-digit LCD, auto-brightness
Process Connections 1/8" or 3/16" ID tubing (barbed fittings); 1/8" compression fittings (477AV-7/8)
Power Supply 9V alkaline battery (150+ hours typical life)
Approvals CE certified

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Xi'an Kacise Optronics Co.,Ltd.
Location 2nd Building, Tianyuan International Mansion, High-tech Zone, Xi'an City, Shaanxi Province, China
Contact Person Evelyn Wang

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