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Climate measurement improved to the maximum.
testo 400 in laboratories and cleanrooms.
We recommend: Universal air velocity & IAQ (Indoor Air Quality) measuring instrument testo 400
For high-precision measurements of all climate-related parameters in cleanrooms and laboratories
Intuitive measurement menus: Clearly structured measurement menus are stored in the measuring device and guide you safely and efficiently through the respective application.
Convenient measurement: Do you measure in environments where Bluetooth is not possible? No problem: simply insert the probe head from the Bluetooth handle onto the cable handle and you’re done.
High-precision probes: Fume cupboard probes for laboratories/cleanrooms; vane probes for laminar flow measurement; humidity probes with an accuracy of
Intelligent calibration concept: Only the probe heads need to be calibrated. You can carry on working with the measuring instrument, handle and another probe.
Precise measurement technology for laboratories and cleanrooms
High degree of precision is required
The specially developed, high-precision probes support you in these applications, among others:
Highly accurate and position-independent differential pressure measurement (only with testo 400)
Reliable measurement of laminar flows
Accurate recording of even the smallest differences in flow
Accurate recording of even the smallest differences in air velocity, from 0.02 m/s
Measuring humidity in critical processes with an accuracy of 1 %
High degree of precision is required
The specially developed, high-precision probes support you in these applications, among others:
Highly accurate and position-independent differential pressure measurement (only with testo 400)
Reliable measurement of laminar flows (laminar flow)
Accurate recording of even the smallest differences in air velocity, from 0.02 m/s
Measuring humidity in critical processes with an accuracy of 1 %
High degree of precision is required
The specially developed, high-precision probes support you in these applications, among others:
Highly accurate and position-independent differential pressure measurement (only with testo 400)
Reliable measurement of laminar flows
Accurate recording of even the smallest differences in flow
Precisely detect the smallest flow differences from 0.02 m/s
Measuring humidity in critical processes with an accuracy of 1 %
High degree of precision is required
The specially developed, high-precision probes support you in these applications, among others:
Highly accurate and position-independent differential pressure measurement (only with testo 400)
Reliable measurement of laminar flows
Accurately recording even the smallest differences in flow
Accurately recording even the smallest differences in air velocity, from 0.02 m/s
Measure humidity in critical processes with an accuracy of 1 %
Probes for measurements in clean rooms and laboratories
Digital Pt100 temperature probes
Digital probes for humidity and temperature
Digital probes for flow measurements
Servicing heat pumps
Measure precisely. Qualify safely.
Precision measurement technology and services for cleanrooms. From Testo.
Product configurator
Customised multifunction instrument
Put your own combination together:
Measuring instrument, probes and accessories
tailored to your application
Multifunction measuring instrument testo 440
The alternative: testo 440 compact
Clear display
Easy button operation
Measurement data storage in the instrument
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Everything else you need to know about the testo 400 and other measuring instruments for laboratories and cleanrooms
testo 400 brochure
Download
Overview of the measurement menus
Find out more
Measuring devices for the cleanroom
Find out more
Measuring instruments for gas concentrations
Find out more
One App for all applications
The testo Smart App guides you quickly and easily through measurements on refrigeration, air conditioning and heating systems.
Now new:
Professional measuring programs for increasing the efficiency of your applications