1. Home
    2. testo 405

    testo 405 - Low Cost Thermal Anemometer 

    0560 4053
    $251.00 $276.10
    1
  1. 3 in 1 Air temperature, air velocity
    & volumetric Air flow 
  2. Telescopic handle to 300 mm 
  3. Illuminated display
  4. Volume flow calculation up to 99,990 m3/h 
    5. Use the testo 405 Low Cost Thermal Anemometer to measure air velocity, volumetric flow and air temperature. It is suitable for carrying out quick check measurements in ventilation ducts and for measuring the air velocity in rooms, e.g. at draughty windows. 
    Use the Testo 405 low cost thermal anemometer to measure air velocity, volumetric flow and air temperature. It is suitable for carrying out quick check measurements in ventilation ducts and for measuring the air velocity in rooms.

    If, in your capacity as an HVAC engineer / technician, you carry out fast check measurements in ventilation ducts or in rooms, then the Testo 405 thermal anemometer is a must-have. The anemometer features a permanently mounted telescope and enables you to measure air flow, volumetric flow and air temperature. The measuring range for flow is between 0 to 10 m/s, volumetric flows are calculated up to 99,990 m3/h.

     The extendable telescope (up to 300 mm) makes the thermal anemometer particularly suitable for flow measurements in ventilation ducts. The illuminated display can be swivelled into various positions, ensuring that the readings can be read off comfortably. The duct bracket (included in the delivery) offers key practical advantages. You can use this to optimally position the telescope in the ventilation duct and obtain precise measurement results.

    The testo 405 thermal anemometer measures particularly accurately in the range between 0 and 2 m/s, you can also use it to measure the air velocity in rooms. Low air velocities, are quickly located and accurately measured using the anemometer.

    Integrated sensor protection: when you are not using the testo 405 thermal anemometer, the rotating protective cap protects the sensors from dust. 

    testo 405 thermal anemometer with permanently mounted telescope, including duct bracket, attachment clip and batteries.

    Customers who viewed this product also viewed

  5. Customers who viewed this product also viewed
    testo 405i - thermal anemometer with smartphone operation
    • For measuring volume flow, air velocity and temperature
    • Simple configuration of the dimension and geometry of the duct cross-section for determining the volume flow
    :
    0560 1405
    1
  6. Customers who viewed this product also viewed
    testo Smart Probes VAC Kit delivery
    testo Smart Probes VAC kit
    • Measurement of air and surface temperature, humidity, air velocity and volume flow
    • Measurement menus for volume flow measurement in ducts and at outlets, identification of mould risk, easy image documentation including IR temperature reading and measurement spot marking
    :
    0563 0003 10
    1
  7. Customers who viewed this product also viewed
    testo Smart Probes HVAC/R Ultimate kit
    testo Smart Probes HVAC/R Ultimate kit
    • For all measurements involving heating, air-conditioning, refrigeration and ventilation systems
    • All Smart Probes for temperature, pressure, humidity and flow in one kit
    :
    0563 0002 32
    1
  8. Customers who viewed this product also viewed
    testo 425
    testo 425 - Digital hot wire anemometer with App connection
    • Simple, fast and precise flow and temperature measurement plus volume flow calculation in the ventilation duct
    • More flexibility for duct measurements with the cable-connected telescopic probe (maximum length 820 mm)
    :
    0563 0425
    1
  9. Customers who viewed this product also viewed
    testo 405i
    testo 405 - Low Cost Thermal Anemometer 
    • 3 in 1 Air temperature, air velocity
      & volumetric Air flow 
    • Telescopic handle to 300 mm 
    :
    0560 4053
    1
  10. Customers who viewed this product also viewed
    testo 440 Air Flow ComboKit 1 with Bluetooth®t 1 with Bluetooth
    testo 440 Air Flow ComboKit 1 with Bluetooth®
    • Intuitive: Clearly structured measurement menus for volume flow and parallel determination of air velocity, humidity, and temperature in ventilation ducts, or at ventilation outlets
    • Smart: Hot wire probe (0.85 m) with telescope (2.8') – combine the Bluetooth vane probe (Ø 100 mm") with the telescope for ceiling outlets, or the funnel set for plate outlets (sold separately)
    :
    0563 4406
    1
  11. Customers who viewed this product also viewed
    testo 440 Hot Wire Kit
    testo 440 Hot Wire Kit
    • Intuitive: clearly structured measurement menu for volume flow and parallel determination of air velocity, volume flow and air temperature in ventilation ducts
    • Convenient: integrated telescope that can be extended to 0.85 m, with scaling, makes it easy to carry out measurements
    :
    0563 4400
    1
  12. Customers who viewed this product also viewed
    testo 440 Delta P Air Flow ComboKit 1 with Bluetooth®
    testo 440 delta P Air Flow ComboKit 1 with Bluetooth®
    • Intuitive: clearly structured measurement menu for volume flow and parallel determination of air velocity, differential pressure, humidity and temperature in ventilation ducts or at ventilation outlets​
    • Smart: simply combine the universal Bluetooth handle with the 100 mm vane or hot wire probe head and the extendable telescope (1.0 m)​
    :
    0563 4409
    1
  13. Customers who viewed this product also viewed
    testo 400 air flow kit with hot wire probe
    testo 400 air flow kit with hot wire probe
    • Standard-compliant determination of the volume flow in ducts using grid measurements as per EN ISO 12599 and ASHRAE 111
    • Determination of the volume flow at outlets by measuring the reference pressure and entering the manufacturer-specific K-factor
    :
    0563 0400 71
    1

    14. Temperature - NTC

    Measuring range
    -20 to +50 °C
    Accuracy
    ±0.5 °C
    Resolution
    0.1 °C

    Velocity -Thermal anemometer

    Measuring range
    0 to 99990 m³/h
    0 to 5 m/s (-20 to 0 °C)
    0 to 10 m/s (0 to +50 °C)
    Accuracy
    ±(0.3 m/s + 5 % of mv) (Remaining Range)
    ±(0.1 m/s + 5 % of mv) (0 to 2 m/s)
    Resolution
    0.01 m/s

    General technical data

    Weight
    115 g (with batteries, without packaging)
    Dimensions
    490 x 37 x 36 mm
    Operating temperature
    0 to +50 °C
    Battery type
    3 AAA micro batteries
    Battery life
    Approx. 20 h
    Display type
    LCD (Liquid Crystal Display)
    Length probe shaft
    300 mm
    Diameter probe shaft
    16 mm
    Diameter probe shaft tip
    12 mm
    Storage temperature
    -20 to +70 °C

    Measurement of indoor air velocity

    For workers to feel comfortable in their indoor working environments, "thermal comfort" has to prevail. The EN 13779 describes this as a state that prevails when people are satisfied with the air temperature, humidity, air movement and thermal radiation in a room, and require neither hotter, colder, nor drier or more humid indoor air.

    The testo 405 is particularly well suited to measuring indoor flow velocity. Low air velocities, such as at draughty windows, can therefore be precisely located and measured extremely accurately.

    testo 405

    Measurement in ventilation ducts

    Observance of air flows in the ventilation duct is of utmost importance for the function of the ventilation and air conditioning system. If the air flows are smaller than intended, the removal of room loads (heating, cooling and substance loads) may not be ensured in certain circumstances. Therefore, the most accurate recording of air flows as possible is particularly important.

    Our thermal anemometer testo 405 allows particularly cost-effective measurement of low air velocities. It enables the accurate and parallel measurement of air flow, volumetric flow and temperature. The extendible telescope allows measurement at a depth of up to 300 mm.

    The display can be swivelled into various positions, enabling optimum measurement readout.

    testo 405