testo 440 – Multi-instrument for Ventilation and Indoor Climate (Demo)

testo 440 – Multi-instrument for Ventilation and Indoor Climate

Use the testo 440 airflow and indoor climate meter in combination with high-quality probes (and also testo SmartProbes) to measure and save all ventilation and indoor climate parameters (probes ordered separately). Up to 3 probes can be connected simultaneously: one Bluetooth probe, one wired probe, and one temperature probe with a type K thermocouple connector. Thanks to automatic probe detection and clearly structured measurement menus, the instrument is very easy to use and will make your daily measurement tasks much simpler.

See also the model with integrated differential pressure sensor >>

Measure with just a few clicks
Measuring should be quick and easy – the testo 440 airflow and indoor climate meter automatically recognizes all connected probes. This means you never have to manually reset any measurement parameters when switching to a different probe. Clearly structured measurement menus for volume flow in ducts/outlets, degree of turbulence, cooling/heating load, indication of mold risk, and logging function. These menus allow you to complete measurement tasks faster, more efficiently, and more reliably. Reports can be exported as Excel files via the USB interface or printed on site.

Wireless and compact – more applications, less equipment
Highly versatile: with a universal handle that can be connected to all probes, you can handle more applications with less equipment and still have space left in your toolbox.
The Bluetooth handle can transmit measurement values up to 20 meters, eliminating cable clutter and providing more space in your tool bag. A wired handle is also available as a practical alternative. This is a great advantage if Bluetooth signals are not permitted.

Practical Data Management
The multi-instrument can store up to 7,500 measurement blocks, which can be downloaded via a USB port and further processed as a CSV file on your computer (e.g., using Excel). With Testo’s BLUETOOTH/IRDA printer (sold separately), you can print a report with your measurement data directly on site.

Intelligent calibration concept for maximum accuracy
You can rely on accurate measurement results when using our digital probes, as the measurement uncertainty in the instrument itself is now eliminated. You only need to send in the probe head for calibration and continue using the multi-instrument.

Benefits and Features of the testo 440 Airflow and Indoor Climate Meter

Accurate and reliable in channels and fittings

• There is a large assortment of probes to choose from: hot-wire and vane probes for measurements in ducts, large vane probes of Ø 100 mm for measurements at outlets in walls and ceilings.
• Fast airflow calculation: in the measurement menu, simply enter the dimensions and shape of the duct. The airflow is displayed directly on the instrument display in either l/s or m³/h.
• You will also discover how easy it is to measure at really large outlets. This is because the telescope on hot-wire and vane probes can be further extended with the telescopic accessory – allowing you to extend the probe to a total length of 2 meters.
• Perform measurements at high altitudes without using a ladder. Connect the extendable telescopic probe with a 90° angle to the probe and, if necessary, also the telescopic accessory (both ordered separately).
• Use the vanes in combination with Testo's measurement funnels over air outlets and ventilation grilles.
• Practical Bluetooth interface: use the airflow probes without a lot of cable hassle. Just press the button on the handle, for example, to start and stop a calculation of the time-averaged value at a specific measurement point.
• Use the practical magnets to attach the multi-instrument to a metal surface (e.g., a ventilation duct)

Long-term measurement of indoor air quality

• The right probe for your requirements: probes for CO₂, CO, air temperature, and air humidity are available with Bluetooth or with a fixed cable.
• Easy to use: enter the measurement time and measurement interval in the menu for long-term measurements and keep track throughout the day.
• Internal memory for 7,500 measurement blocks.

Turbulence measurement compliant with EN ISO 7730 / ASHRAE 55

• Achieve high accuracy with a turbulence probe, even at low air velocities.
• Automatic calculation of draft and turbulence in accordance with EN ISO 7730/ASHRAE 55.
• For practical measurement at different heights, we recommend our tripod for comfort level measurements. It makes it very easy to position the turbulence probes in accordance with applicable standards.

Sensors for Cleanrooms and Laboratories

• Fume hood probe for accurate measurements of air velocity in fume hoods
• Thanks to the low starting velocity of 0.1 m/s, the high-accuracy vane probe (Ø 100 mm) is ideal for laminar flow measurements in cleanrooms. The probe is available with a fixed cable and with Bluetooth.
• High-accuracy humidity/temperature probe (0636 9771 or 0636 9772) with an accuracy of ±(0.6 %RH + 0.7 % of mv) in the range 0 ... 90 %RH for measurement in cleanrooms.

Included in delivery

testo 440 for ventilation and indoor climate, 3 x AA batteries.