testo 400 – indoor climate measurement kit

testo 400 climate measurement kit for indoor climate professionals

  • Determination of the comfort level parameters PMV/PPD
  • Measurement of drag and turbulence levels
  • Display airflow in l/s or m3/h
  • Measurement of CO2 content, humidity, air temperature
  • Measuring radiant heat with global sensors

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Delivery time: 5-10 working days

Delivery time: 5-10 working days

testo 400 – complete indoor climate and comfort level measurement kit with stand

testo 400 – The new generation of climate instruments. Smarter. Faster. Better.

The versatile testo 400 climate instrument and the wide range of precision sensors were developed with one goal in mind: to make all measurement tasks in the field of ventilation easier and less complicated than ever before.

With the testo 400 you can perform tasks that were previously only possible with a PC and software – directly on site with just one measuring instrument!

With testo 400 you always have your own personal assistant with you. The more demanding the measurement, the more support you get from the help functions in setting, measuring and evaluating the results.

Advantages of this testo 400 measuring set

  • Determination of PMV/PPD, drag and turbulence with a measuring stand that allows you to use up to 3 sensors at the same time, with correct positioning in accordance with current standards.
  • Long-term measurements for up to 2 weeks can be performed using the IAQ data logger (ordered separately), independent of the testo 400.
  • Can be expanded at any time with a wide range of digital sensors.
  • The practical soft bag that comes with it fits both the tripod and the globe sensor.

This measurement kit is the perfect equipment for anyone involved in analyzing indoor air quality and comfort levels. The instrument assists you with ready-made measurement menus and evaluates the measurement results using the traffic light principle – for error-free measurements. You can manage all relevant customer data, including measuring points, directly in the instrument and can thus work efficiently, directly at the measuring site. The sensors can be changed quickly and easily without having to restart the instrument. Sensor calibration is completely independent of the measuring instrument, which means you can continue to use the instrument with other sensors.

Maximum airflow measurement

  • If you want to see the air flow rate in l/s or m3/h, the instrument can easily calculate and display this according to current standards.
  • You always have all measuring points with you, ready to use.
  • Bluetooth wireless sensors for maximum freedom of movement at work.
  • You can easily finish with a completed report directly on site.

Maximized measurement in laboratories, cleanrooms and industry

  • Auxiliary function for PMV/PPD measurements and determination of draft levels.
  • IAQ data logger (optional) for long-term measurement of the indoor climate, independent of the instrument.
  • Complete the report either directly on site or later on a PC.

Maximum comfort level measurement

  • Highest precision, especially for pressure and temperature measurements.
  • View all measurements in table and chart format.
  • Zero error adjustment in the instrument for even more accurate measurements.

Common sensor range with testo 440

The sensor range of the versatile indoor climate meter testo 400 is common to the testo 440. This means you can add to your toolbox as you go along and don’t have to buy new sensors if you invest in both instruments.

The delivery includes

  • Indoor climate meter testo 400, PC program testo DataControl, silicone hoses, power supply unit with USB cable and factory protocol
  • CO2 sensor with Bluetooth®, incl. temperature and humidity sensor (incl. CO2 sensor and Bluetooth® handle), 4 pcs. AA batteries, table stand and factory protocol.
  • Fixed cable turbulence sensor, including factory protocol
  • Probe Ø 150 mm with fixed cable, TE type K, for measuring radiant heat
  • Measuring stand for comfort level measurement, consisting of folding stand, mounting pole, 4 sensor holders, including bag
  • testo 400 service case for comfort level measurement

Fabriksprotokoll: utfärdas på fabriken efter en kontroll av att produkten fungerar och uppfyller angiven mätnoggrannhet. Läs om skillnaden mellan fabriksprotokoll och ackrediterad kalibrering.

testo DataControl for testo 400

testo DataControl for testo 400 can be used for customer and measurement site management and has advanced analysis and archiving functions. If you already have an existing version installed on your PC, it will be updated to the latest version.

The PC program DataControl can be downloaded from theDownload” tab.

Probes in the measurement kitSee the respective probe data
Measurable parameters with external sensors (optional)Air flow, air speed, draft, degree of turbulence, temperature, humidity, pressure, brightness, radiant heat, turbulence, CO2 and CO
Measurement range-10,000 … +20,000 Pa
Accuracy (±1 digit)±(0.3 Pa ± 1 % of m.v.) (0 … 2,500 Pa)

±(10 Pa + 1.5% of m.v.) (2,500 … 20,000 Pa)
Resolution0.1 Pa
ABSOLUTE PRESSURE (internal sensor)
Measurement range700 … +1,100 hPa
Accuracy (±1 digit)±3 hPa
Resolution0.1 hPa
TEMPERATURE NTC (with suitable sensor)
Measurement range-40 … +150 °C
Accuracy (±1 digit)±0.2 °C (-25 … 74.9 °C)

±0.4 °C (-40 … -25.1 °C)

±0.4 °C (+75 … +99.9 °C)

±0.5% of m.v. (other measuring range)
Resolution0.1 °C
TEMPERATURE TE TYPE K (with suitable sensor)
Measurement range-200 … +1370 °C
Accuracy (±1 digit)±(0.3 °C + 0.1% of mv.)
Resolution0.1 °C
TEMPERATURE Pt100 (with suitable sensor)
Measurement rangeSee probe data
Accuracy (±1 digit)See probe data
ResolutionSee probe data
Sensor connections4 pcs Bluetooth®, 2 pcs TUC*, 2 pcs TE type K
ConnectionsBluetooth®, WLAN, USB
Operating temperature-5 … +45 °C
Storage temperature-20 … +60 °C
Power supplyRechargeable li-ion battery
(5550 mAh)
Battery lifeabout 10 hours of continuous operation
Display5-inch HD display
1280 x 720 px resolution
CameraMain camera: 8.0 MP

Front camera: 5.0 MP
Memory2 GB (equivalent to approx. 1,000,000 measurements)
Protection classIP40
Measure210 x 95 x 39 mm
* TUC connection (Testo Universal Connector): For connecting digital sensors with fixed cable and NTC sensors.

Digital air velocity probes

Digital comfort level probes

Digital moisture probes

Digital CO probes

Digital temperature probes

NTC probes with TUC connector

Thermocouple probes type K

testo SmartProbes

Pitot tubes (prandtl tubes)


Datablad testo 400

testo DataControl till testo 400

testo DataControl till testo 400 kan användas för kund- och mätplatshantering och har avancerade analys- och arkiveringsfunktioner. Om du redan har en befintlig version installerad på din PC, kommer den att uppdateras till den senaste versionen.


I de flesta Windows-versioner laddas filer ned till en mapp med namnet ”Hämtade filer” eller ”Download”. Flytta den nedladdade ZIP-filen till C:/temp eller direkt till C:/ och packa upp den. Högerklicka sedan på EXE-filen och välj ”Kör som administratör”. Då påbörjas installationen atuomatiskt. När allt är klart ska det ha skapats en Testo-mapp i startmenyn, där du hittar den nya programikonen.

Skriv din fråga i det här fältet.

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testo 440 dP – indoor climate measurement kit

Indoor climate measurement kit, with sensors for operational temperature, CO2 and draught.

  • Display airflow in l/s or m3/h
  • Integrated differential pressure sensor
  • Wide range of digital sensors
  • Report function