Testo Testo 417 NTC, Rotary Vane 20m/s Max Air Velocity Air Velocity, Temperature, Volume Air Flow Anemometer

  • RS Stock No. 518-4513
  • Mfr. Part No. 0560 4170
  • Brand Testo
Technical Reference
Legislation and Compliance
RoHS Status: Not Applicable
COO (Country of Origin): DE
Product Details

testo 417 Large Area Vane Anemometer with Temperature Measurement

From Testo, the 417 large area rotating vane anemometer designed for measuring airspeed, air velocity and temperature. The hand-held meter provides fast, accurate readings at ventilation ducts, air grilles and air outlets. Constructed from tough ABS impact resistant plastic the robust handheld meter is the ideal instrument for service engineers, HVAC technicians and building inspectors.

Compact in design, the handheld digital anemometer uses a precision 100mm rotating vane sensor and built-in NTC thermistor to deliver readings with a high degree of accuracy. The 417 anemometer records wind speed from 0.3 to 20 m/s (therefore calculating volume from 0 to 99999 m³/h), while the NTC air temperature sensor range goes from 0 to 50 °C. Additionally, the Testo 417 anemometer has the ability to detect and display the direction of flow, i.e. blown or drawn, a welcome feature for HVAC performance testing. The device also features other advanced measurement features including mean and timed point average calculation, minimum and maximum values and data hold.

An easy to navigate keypad and soft control buttons make the Testo 417 handheld anemometer incredibly easy to use. With minimal effort the user can select the function to be measured, the mode you wish to record and the unit the data will be shown. With a large backlit LCD display, all collected data is clearly shown on the front screen, even in low light conditions. A handy auto-off feature also helps to conserve battery life.

Features and Benefits

• 100 mm vane
• NTC air temperature sensor
• The direction of flow displayed
• Direct display of volume flow
• Airflow, velocity and wind speed
• Min / Max values
• Data hold
• Display backlight
• Easy to read LCD display
• Low battery indication
• Auto off
• 9 V battery (PP3) Approx. 50 hrs


Rotating vane anemometers are used to measure environmental conditions quickly and accurately. The information and data they provide are vital in a wide range of applications and environments. They are essential for reporting, forecasting and planning and more importantly health and safety. Some of the more common applications are

• HVAC system performance
• Building and construction
• Environmental testing
• Clean rooms
• Fans / motors / blowers
• Meteorological studies
• Wind direction, wind speed and gust


Q – Are there any additional accessories available?
A- Yes, the testovent 417 funnel set is available separately. It can be used in conjunction with the 417 digital anemometers for measuring the volume of flow at ventilation grilles and plate outlets quickly and conveniently. See part number 516-0602
Q - Is there a recommended replacement battery?
A - Yes, the RS PRO anemometer uses a 9V battery for its power supply. See RS part number 826-4435

Supplied with

9V PP3 battery, integral 100mm vane with temperature sensor and instructions.

Attribute Value
Measurement Parameters Air Velocity, Temperature, Volume Air Flow
Maximum Air Velocity 20m/s
Best Air Velocity Accuracy ±1.5% + 0.1 m/s
Air Velocity Resolution 0.01m/s
Probe Type NTC, Rotary Vane
Temperature Measurement Resolution 0.1°C
Best Temperature Measurement Accuracy ±0.5 °C
Power Source Battery
Battery Type 9V
Battery Life 50 h
Dimensions 277 x 105 x 45mm
Weight 230g
Height 45mm
Length 277mm
Minimum Operating Temperature 0°C
Model Number p Testo 417
Maximum Operating Temperature +50°C
Width 105mm
15 in stock for FREE next working day delivery
71 available from Europe for delivery within 2 working day(s).
Price Each
£ 279.00
(exc. VAT)
£ 334.80
(inc. VAT)
Per unit
1 +
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