Extech HD350: Pitot Tube Anemometer + Differential Manometer

EXTECH HD350: Pitot Tube Anemometer + Differential Manometer

Extech HD350: Pitot Tube Anemometer + Differential Manometer

The Extech HD350 is a versatile handheld instrument that combines a Pitot tube anemometer and a differential manometer in one device. It simultaneously displays pressure, air velocity or airflow, and temperature, making it ideal for HVAC technicians, engineers, and field professionals. With selectable pressure units, advanced data logging features, and a large backlit LCD screen, this meter offers high-performance monitoring and recording of air dynamics.

The HD350 is equipped with a built-in USB interface and includes Windows®-compatible software for data transfer and analysis. It comes complete with a Pitot tube, twin connection hoses, a 9V battery, and a hard carrying case for portable use in industrial environments.

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Key Features Extech HD350: Pitot Tube Anemometer + Differential Manometer

• Simultaneous display of pressure, air velocity/flow, and temperature

• Measures differential pressure with a range of up to 0.7252 psi

• 5 selectable pressure units: psi, mbar, inH₂O, mmH₂O, and Pa

• Air velocity readings from 200 to 15,733 ft/min

• Max/Min/Average recording with relative time stamp

• Data Hold function and Auto Power Off for battery conservation

• Zero function for measurement correction or offset

• Stores and recalls up to 99 readings in each mode

• Large, backlit LCD screen for easy viewing in low-light environments

• USB port for PC connectivity with included software

• Comes with Pitot tube, dual 33.5″ (85 cm) hoses, 9V battery, and hard carrying case

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Specifications

• Pressure Measurement:

  • psi: up to 0.7252 psi, resolution 0.0001 psi, ±0.3% FS accuracy

  • mbar: up to 50.00 mbar, resolution 0.01 mbar

  • inH₂O: up to 20.07 inH₂O, resolution 0.01 inH₂O

  • mmH₂O: up to 509.8 mmH₂O, resolution 0.01 mmH₂O

  • Pa: up to 5000 Pa, resolution 1 Pa

  • Linearity/Hysteresis: ±0.29 FS

  • Max pressure capacity: 10 psi

• Air Velocity / Flow:

  • ft/min: 200 to 15,733 ft/min

  • m/s: 1 to 80.00

  • km/h: 3.5 to 288.0

  • MPH: 2.25 to 178.66

  • knots: 2.0 to 154.6

  • CFM/CMM: 0 to 99,999 (resolution: 0.001)

• Temperature Measurement:

  • Range: 32.0 to 122.0 °F (0 to 50 °C)

  • Resolution: 0.1°

  • Accuracy: ±3 °F / ±1.5 °C

• Device Dimensions and Weight:

  • Meter: 8.2 × 2.9 × 1.9 inches (210 × 75 × 50 mm), weight: 12 oz (340 g)

  • Pitot Tube: 15.4 × 7.7 inches (390 × 195 mm), diameter: 0.32″ (8 mm), weight: 7.2 oz (204 g)

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Summary

The Extech HD350 is a powerful diagnostic tool combining Pitot tube-based air velocity measurement with precise differential pressure monitoring. With selectable units, data recording, USB connectivity, and a rugged design, it is tailored for professional use in HVAC, process control, and ventilation diagnostics. It delivers reliable results whether you’re balancing airflow systems or conducting environmental testing in complex settings.