testo 400 – measurement kit for ventilation

Measurement set with the testo 400 climate instrument for ventilation professionals.

  • Measurement of air velocity and air flow on diffusers and in ducts
  • Display airflow in l/s or m3/h
  • Hot wire sensor (Ø 7.5 mm) with telescope and fixed cable included

 25 495:-

Delivery time: 5-10 working days

Delivery time: 5-10 working days

testo 400 – Measurement kit for ventilation measurements

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

  • Ready-made measurement menus for airflow and grid measurements according to current standards.
  • You can finish the work with a final report to the client directly on site.
  • The measurement set can be expanded at any time with a wide range of digital sensors.
  • The handy service bag provided includes molded slots for specific sensors and accessories.

This measuring set is for those who work with measuring and adjusting ventilation systems. The instrument assists you with ready-made measurement menus and evaluates the measurement results with 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 need to buy new sensors if you invest in both instruments.

The delivery includes

  • Multi-instrument testo 400, PC program testo DataControl, silicone hoses, power supply with USB cable and factory protocol
  • Hot-wire sensor (Ø 7.5 mm), with fixed cable and telescope, incl. antenna. temperature sensor
  • Pitot tube (prandtl tube), length 350 mm, Ø 7 mm, nickel-plated brass
  • Calibration certificate for differential pressure: 10 points in the measuring range 0 … 500 Pa
  • Hot wire anemometer calibration certificate: 1/2/3/5/8/10 m/s
  • Service bag for ventilation measurements

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 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