Determination of volume flow in ducts using grid measurement in accordance with EN 12599

  • For all flow velocity probes (hot wire, vane) and Pitot tubes
  • Input of duct geometry and duct apertures
  • Single-point or timed measurement
  • Automatic display of insertion depths for traversing duct
  • Duct distribution for rectangular ducts according to the trivial method, and for circular ducts according to the centroidal axis method
  • Calculation of measurement uncertainty according to EN 12599
testo 400 display with Smart-Touch technology
testo 400 display with Smart-Touch technology

Determination of volume flow in ducts using grid measurement in accordance with EN 12599

  • For all flow velocity probes (hot wire, vane) and Pitot tubes
  • Input of duct geometry and duct apertures
  • Single-point or timed measurement
  • Automatic display of insertion depths for traversing duct
  • Duct distribution for rectangular ducts according to the trivial method, and for circular ducts according to the centroidal axis method
  • Calculation of measurement uncertainty according to EN 12599
testo 400 display with Smart-Touch technology
testo 400 display with Smart-Touch technology

Click now to see how the testo 400 works!

Intuitive operation and guided measuring programs for fast and error-free measurements.
Universal IAQ measuring instrument with smartphone operation

Click now to see how the testo 400 works!

Intuitive operation and guided measuring programs for fast and error-free measurements.
testo 400 display with Smart-Touch technology
testo 400 display with Smart-Touch technology
Universal IAQ measuring instrument with smartphone operation
Smart-Touch

Work efficiently on site – no workarounds, just on to the next job

  • Manage and save all relevant customer data including measurement locations directly in the instrument
  • Complete and send measuring values with full documentation, including photos, comments and your own logo directly on site – and get to the next job faster
testo 400 display with Smart-Touch technology
testo 400 display with Smart-Touch technology
Volume flow measurement
testo 400 display with Smart-Touch technology
testo 400 display with Smart-Touch technology

Work efficiently on site – no workarounds, just on to the next job

  • Manage and save all relevant customer data including measurement locations directly in the instrument
  • Complete and send measuring values with full documentation, including photos, comments and your own logo directly on site – and get to the next job faster
testo 400 display with Smart-Touch technology
testo 400 display with Smart-Touch technology
Volume flow measurement

Determination of volume flow in ducts using grid measurement in accordance with EN 12599

  • For all flow velocity probes (hot wire, vane) and Pitot tubes
  • Input of duct geometry and duct apertures
  • Single-point or timed measurement
  • Automatic display of insertion depths for traversing duct
  • Duct distribution for rectangular ducts according to the trivial method, and for circular ducts according to the centroidal axis method
  • Calculation of measurement uncertainty according to EN 12599
testo 400 display with Smart-Touch technology
testo 400 display with Smart-Touch technology

testo 400 – the multitasker for IAQ professionals

  • Measures all IAQ-related parameters: Flow, temperature, humidity, pressure, illuminance, radiant heat, turbulence, CO₂ and CO
  • High-precision, location-independent and integrated differential pressure sensor
  • High-quality digital probes and an intelligent calibration concept
testo 400 display with Smart-Touch technology
testo 400 display with Smart-Touch technology
IAQ measurement Testo

Smart support

Stored measurement menus and evaluation of measurement values according to the traffic light principle – for error-free measurements.

  • VAC grid measurement as per EN ISO 12599
  • PMV/PPD in accordance with EN ISO 7730
  • Draught and degree of turbulence in accordance with EN ISO 55
  • WBGT measurement in line with DIN 33403 and EN ISO 7243
  • NET measurement in accordance with DIN 33403
testo 400 Display mit Smart-Touch-Technologie
testo 400 display with Smart-Touch technology
Comfort level measurement Testo