The Testo 400 is the ideal appliance for any ventilation and air conditioning expert. It is a universal instrument for measuring the parameters of the working environment, with which measurements of air flow rate and comfort level are made in accordance with standards, and it is also suitable for setting and inspecting ventilation and air conditioning systems.

Impressive measurement technology for working environments

• Highly accurate, built-in differential pressure sensor
• Built-in absolute pressure sensor
• Measures all operating environment parameters: air velocity, temperature, humidity, pressure, illuminance, radiated heat, turbulence,_CO2 and CO
• Multiple probe connection options: 2 probes with cable (TUC), 4 probes with ^Bluetooth®, 2 probes thermocouple type K
• Compatible with a variety of ^Bluetooth® and wired probes – so you’re equipped for any measurement task
• For extremely accurate measurements and workflow optimization: function for setting up to 6 measuring points, changing probe heads without restarting the instrument, high-quality probes with intelligent calibration concept (calibrate the probes without the meter)
• Continuous indoor air quality monitoring: order the IAQ date logger to make continuous and continuous measurements with testo 400. While using the stand-alone logger for continuous measurement of the operating environment parameters, you can use the instrument elsewhere.

Smart, intuitive, practical

• For error-free measurements in compliance with standards: intuitive measurement menus and evaluation of readings via the traffic light symbol. Use the measurement programs for the following standards-compliant measurements: ventilation grille measurements according to EN ISO 12599 and ASHRAE 111, PMV/PPD according to EN ISO 7730 and ASHRAE 55, draft and turbulence according to EN ISO 7730 and ASHRAE 55, WBGT measurement according to DIN 33403 and EN ISO 7243, NET measurement according to DIN 33403
• Complete measurement and documentation including photos, comments, company logo at the customer’s site and sending the information by e-mail (via WLAN)
• Manage measurements and customer data from the instrument itself – for efficient operation in the field
• Touchscreen smart display for intuitive operation
• testo DataControl PC software for additional analysis, archiving and documentation of PC data
• Built-in WLAN and ^Bluetooth® interfaces: send measurement protocols directly to the field or print them with a suitable printer

Applications

Software