- testo 440: air velocity & IAQ measuring instrument
- testo 440 dP: air velocity & IAQ measuring instrument incl. differential pressure

FEATURES:

• Intuitive: clearly structured measurement menus for the most important applications stored on the instrument
• Wireless: Bluetooth probes for greater measuring convenience and a reduced tangle of cables in the case
• Space-saving: a universal handle for all probes Clear overview: parallel display of 3 measuring values; configuration and results at a glance
• Reliable: internal memory for up to 7500 measurement protocols, USB interface for data export and optional printout of measuring values

The testo 440 combines the benefits of a compact handheld device with intuitive measurement menus and a comprehensive selection of air velocity & IAQ probes. This means you have all measuring tasks on air conditioning and ventilation systems reliably under control.

You can connect the testo 440 air velocity & IAQ measuring instrument either to a large selection of digital probes, the Testo Smart Probes or numerous Testo temperature probes. Clearly structured menus for measuring volume flow in ducts/at outlets, K-factor, degree of turbulence, cooling/heating load, mould indication and logging mode are stored on the instrument. These menus enable you to accomplish the relevant measuring task more quickly, more efficiently and more reliably. Reports can be exported as Excel files via the USB interface or printed out on site.

The testo 440 air velocity & IAQ measuring instrument is available in two versions. The testo 440 dP model version
also has an integrated differential pressure sensor. This makes measurements at filters as well as Pitot tube and K-factor measurements possible.

TECHNICAL DATA

Temperature - NTC

Measuring range: -40 to +150 °C
Accuracy: ±0.4 °C (-40 to -25.1 °C)
±0.3 °C (-25 to +74.9 °C)
±0.4 °C (+75 to +99.9 °C)
±0.5 % of mv (Remaining Range)
Resolution 0.1 °C

Temperature - TC Type K (NiCr-Ni)

Measuring range: -200 to +1370 °C
Accuracy ±(0.3 °C + 0.3 % of mv)
Resolution 0.1 °C

General technical data

Weight: 250 g
Dimensions 154 x 65 x 32 mm
Operating temperature: -20 to +50 °C
Product Colour: black/orange
Connectable probes: 1 x digital probe with cable or 1 x Temperature NTC TUC, 1 x digital Bluetooth probe or testo Smart Probe, 1 x Temperature TC Type K
Battery type: 3 AA mignon 1.5 V
Battery life: 12 h (typically vane measurement)
Interface: Bluetooth®; USB
Storage temperature -20 to +50 °C

Available Probes:

• Temperature,
• Humidity,
• Air Velocity,
• Pressure ,
• Lux,
• CO
• CO2

Download Brochure for technical details and selection of different probes & accessories.

Videos:

Video1: Testo 440

Video 2: Probe testo 440

Video 3: Testo 440 Pressure

Video 4: Testo 440 Air Velocity & Volume Flow

Video 5: Testo 440 IAQ and Comfort Level