Extech HD350 Pitot Tube Anemometer + Differential Manometer

Extech HD350 Pitot Tube Anemometer + Differential Manometer


The Extech Pitot Tube Anemometer + Differential Manometer reaches in tight locations where a vane anemometer can't fit to measure air velocity/airflow.


  • ±0.7252psi range
  • 5 selectable units of pressure measurement
  • Stores/recalls up to 99 readings in each mode
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The Extech Pitot Tube Anemometer + Differential Manometer measures air velocity and airflow in difficult-to-reach or tight locations. The meter simultaneously displays pressure, air velocity, or air flow plus temperature on a large LCD display with backlighting. It has 5 selectable units of pressure measurements and a ±0.7252psi range. It stores and recalls up to 99 readings in each mode to then be transferred to a PC via the UBS port to analize data points using the included software. Additional meter functions include max/min/avg recording, relative time stamp, data hold, and auto power off.

Notable Specifications:
  • psi range: 0.7252psi
  • psi resolution: 0.0001psi
  • psi accuracy: ±0.3%FS
  • mbar range: 50.00mbar
  • mbar resolution: 0.01mbar
  • mbar accuracy: ±0.3%FS
  • inH2O range: 20.07inH2O
  • inH2O resolution: 0.01inH2O
  • inH2O accuracy: ±0.3%FS
  • mmH2O range: 509.8mmH2O
  • mmH2O resolution: 0.01mmH2O
  • mmH2O accuracy: ±0.3%FS
  • Pa range: 5000Pa
  • Pa resolution: 1Pa
  • Pa accuracy: ±0.3%FS
  • Repeatability: ±0.2% (max. ±0.5%FS)
  • Linearity/hysterisis: ±0.29FS
  • Maximum pressure: 10psi
  • Response time: 0.5s typica
  • ft/min range: 200 to 15733
  • ft/min resolution: 1
  • ft/min accuracy: ±3% rdg
  • m/s range: 1 to 80.00
  • m/s resolution: 0.01
  • m/s accuracy: ±3% rdg
  • km/h range: 3.5 to 288.0
  • km/h resolution: 0.1
  • km/h accuracy: ±3% rdg
  • MPH range: 2.25 to 178.66
  • MPH resolution: 0.01
  • MPH accuracy: ±3% rdg
  • knots range: 2.0 to 154.6
  • knots resolution: 0.1
  • knots accuracy: ±3% rdg
  • CFM range: 0 to 99,999
  • CFM resolution: 0.001
  • CFM accuracy: ±3% rdg
  • CMM range: 0 to 99,999
  • CMM resolution: 0.001
  • CMM accuracy: ±3% rdg
  • °F range: 32.0 to 122.0°F
  • °F resolution: 0.1°
  • °F accuracy: ±2°F
  • °C range: 0 to 50°C
  • °C resolution: 0.1°
  • °C accuracy: ±1°C
  • Meter dimensions: Meter: 8.2 x 2.9 x 1.9" (210 x 75 x 50mm)
  • Meter weight: 12oz (340g)
  • Pitot tube dimensions: 15.4 x 7.7” (390 x 195mm)
  • Pitot tube weight: 7.2oz (204g)
What's Included:
  • (1) Meter
  • (1) Pitot tube
  • (2) 33.5 (85cm) connection hoses
  • (1) 9V battery
  • (1) 100V-240V universal AC adaptor
  • (1) Hard carrying case
Image Part # Product Description Price Stock Order
Extech HD350 Pitot Tube Anemometer + Differential Manometer HD350 Pitot tube anemometer + differential manometer
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Questions & Answers

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How does this meter measure air flow and pressure?
This anemometer uses a unique pitot tube method to measure air velocity and air flow, and a manometer hose to measure pressure in small, tight areas. To measure air velocity or air flow, the pitot tube is connected to the meter by the two pressure manometer hoses. Then the tube is held in the flow of air with the mouth of the tube facing the oncoming air. To measure pressure, connect only one hose to the input(+) port on the meter, and hold the open end of the tube toward the air flow.

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