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Extech HD350 Pitot Tube Anemometer and Manometer

  • Measures airflow with an accuracy of 2% using a pitot tube, ideal for tight locations.
  • Simultaneously displays airflow, temperature and pressure.
  • Automatically records Max/Min/Avg and can store up to 99 readings in each mode.

rrp £259.51

now £206.99 (Ex. VAT) £248.39 (Inc. VAT)

rrp £259.51


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"Heavy duty pressure gauge and airflow meter"

  • Description

    Extech HD350 Pitot Tube Anemometer and Manometer

    The Extech HD350 Pitot Tube Anemometer & Differential Manometer is a versatile pressure measurement instrument that can also measure fluid air velocity/airflow. This manometer from Extech Instruments uses a unique pitot tube sensor to determine air velocity, air flow and pressure in vents, ducts and other small openings. The Extech HD350 is the perfect instrument for performing these measurements in difficult to reach and tight locations where a rotating vane anemometer wouldn't normally fit.

    Extech HD350 Pitot Tube Anemometer & Differential Manometer Features:

    • Simultaneous display of Pressure, Air Velocity or AirFlow plus Temperature
    • 50mbar range
    • 5 selectable units of pressure measurement
    • Max/Min/Avg recording and Relative time stamp
    • Data Hold and Auto power off functions
    • Large LCD display with backlighting
    • Zero function for offset correction or measurement
    • Store/Recall up to 99 readings in each mode
    • Includes Windows® compatible software
  • Specification


    psi 0.7252 0.0001 ±0.3%FS
    mbar 50.00 0.01 ±0.3%FS
    inH2O 20.07 0.01 ±0.3%FS
    mmH2O 509.8 0.01 ±0.3%FS
    Pa 5000 1 ±0.3%FS
    • Repeatability: 0.2% (Max 0.5%FS)
    • Linearity/Hysteresis: 0.29FS
    • Maximum pressure: 10psi
    • Response time: 0.5s typical


    Air Velocity

    Air VelocityRangeResolutionAccuracy
    ft/min 200 to 15733 1 ±3% rdg
    m/s 1 to 80.00 0.01 ±3% rdg
    km/h 3.5 to 288.0 0.1 ±3% rdg
    MPH 2.25 to 178.66 0.01 ±3% rdg
    knots 2.0 to 154.6 0.1 ±3% rdg


    Air Flow

    Air FlowRangeResolutionAccuracy
    CFM 0 to 99,999 0.001 ±3% rdg
    CMM 0 to 99,999 0.001 ±3% rdg



    °F 32.0 to 122.0 0.1° ±2°F
    °C 0 to 50 0.1° ±1°C



    • Dimensions: 210 x 75 x 50mm
    • Weight: 544g (inc. pitot tube)
  • Supplied Accessories

    • Extech Instruments HD350 Differential Manometer
    • Pitot tube with two 85cm connection hoses
    • 110V-240V universal AC adaptor
    • Windows compatible software with USB cable
    • 9V battery
    • Hard carry case
  • Product Questions

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  • Reviews

    Review by Jim (Posted on 13/08/2014)
    We have purchased this to trial for use by mechanics around the UK for testing vacuums and extractors. So far so good, done some field tests and overall the kit is simple to use, easy instructions and very well packaged in a workshop friendly storage case. Great little product.

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  • Delivery Information

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    We use DPD/Interlink for all larger items and Royal Mail for smaller items and accessories. With DPD/Interlink you will receive a 1 hour delivery window on the day of delivery via e-mail/text and a notification 15 minutes before arrival so you will not have to wait around all day. You can even manage your booking online and re-arrange delivery for another date or arrange the goods to be left with a neighbour of your choice.

    We also offer delivery options for goods required urgently on certain products, all which are sent by DPD/Interlink.

    Our charges for UK deliveries:

    • FREE Delivery (on select products only): typically 3-5 working days*
    • Standard Delivery at £4.95: 2-3 working days
    • Next Working Day Delivery (on select products only) at £7.50
    • Pre-Noon Next Working Day Delivery (on select products only) at £9.50*
    • Pre-10.30am Next Working Day Delivery (on select products only) at £18.50*
    • Saturday Pre-Noon Delivery (on select products only) at £14.50*
    • Sunday Pre-Noon Delivery (on select products only) at £14.50*

    *UK mainland only

    NOTE! For next working day or Saturday/Sunday delivery options the order MUST be placed no later than 3pm on the working day before delivery is required. After 3pm, please arrange with our staff before selecting a priority delivery service. Priority services are available to UK mainland residents only (this might exclude certain areas in the north of Scotland).

    Customers outside the UK: exports to many countries all over the world. Prices for shipping vary on location and weight/dimensions. Costs are calculated for certain countries at the checkout. If your country is not included in this list please e-mail with your name, address and the items you would like to order for an accurate shipping quote or go to for more information.

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