The universal air velocity & IAQ measuring instrument testo 400
Fast on
Simply exchange probes during the measurement without a re-start.
Measurement assistant
Smart support for error-free measurement.
Universally applicable
Wide range of probes for all of your air flow & IAQ measurements.
Always ready to go
Probes can be calibrated independently of the measuring instrument.
Saving time
Finish measurement with complete documentation directly on site with the customer.
Click now to see how the testo 400 works!
With an intuitive touch display
and intelligently designed operation,
the testo 400 helps you
to carry out all measurements
faster and more efficiently
than ever before.
What do you need to measure?
Application videos: the testo400 in practice.
Volume flow measurement in ducts and at outlets
Comfort measurement (PMV/PPD)
Long-term measurement with the testo 400 and IAQ data logger
Measurements in a cleanroom
testo 400 brochure
All testo 400 measurement menus.
NEBB Compliance Guide
Click now to see how the testo 400 works!
With an intuitive touch display
and intelligently designed operation,
the testo 400 helps you
to carry out all measurements
faster and more efficiently
than ever before.
Play
Stop
testo 400 - the multitasker for TAB / Commissioning and IAQ professionals
- Measures all IAQ-related parameters: Air 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
Smart support
Stored measurement menus and evaluation of measuring values according to the traffic light principle – for error-free measurements
- HVAC grid measurement in accordance with EN ISO 12599 and ASHRAE 111
- PMV/PPD in accordance with EN ISO 7730 and ASHRAE 55
- Draft and degree of turbulence in accordance with EN ISO 7730 and ASHRAE 55
Determination of volume flow in ducts using grid measurement in accordance with EN 12599 / ASHRAE 111
- For all flow velocity probes (hot wire, vane) and Pitot tubes
- Input of duct geometry and duct apertures
- Single-point or timed measurement
- Calculation of measurement uncertainty according to EN 12599 / ASHRAE 111
- 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.
Determination of volume flow in ducts using grid measurement in accordance with EN 12599 / ASHRAE 111
- For all flow velocity probes (hot wire, vane) and Pitot tubes
- Input of duct geometry and duct apertures
- Single-point or timed measurement
- Calculation of measurement uncertainty according to EN 12599 / ASHRAE 111
- 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.
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Determination of volume flow in ducts using grid measurement in accordance with EN 12599 / ASHRAE 111
- For all flow velocity probes (hot wire, vane) and Pitot tubes
- Input of duct geometry and duct apertures
- Single-point or timed measurement
- Calculation of measurement uncertainty according to EN 12599 / ASHRAE 111
- 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.
_oben_EN_im6c.jpg)
_unten_EN_im6c.jpg)
Work efficiently on site – no workarounds, just on to the next job
- Manage 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
Work efficiently on site – no workarounds, just on to the next job
- Manage 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
