testo 440 Air Velocity & IAQ Measuring Instrument

testo 440 Air Velocity & IAQ Measuring Instrument

Precise, reliable measurement of all air velocity and IAQ parameters with just one measuring instrument: the multifunction measuring instrument features intuitive operation with clearly structured measurement menus. Adjusting air conditioning and ventilation systems, monitoring air quality or carrying out comfort level measurements – thanks to versatile options for combining with high-quality, digital probes, you are ideally equipped to carry out your measuring task (please order probes separately).

Intuitive: clearly structured measurement menus for volume flow, degree of turbulence, cooling/heating output, mould detection and long-term measurement, such as CO₂

Wireless: Bluetooth® probes for extra convenience when measuring and less cable clutter in the measuring case (please order probes separately)

Clear overview: large graphic display with parallel display of 3 readings

Safe and reliable: internal data storage and USB port for data export

Large range of connectable probes: hot wire and vane probe (Ø 16 mm) for measurements in ducts; large vane probes of Ø 100 mm for measurements at air/ceiling outlets

Calculate volume flow quickly: in the measurement menu, simply configure the dimensions and geometry of the duct cross-section and see the volume flow displayed on the measuring instrument straight away

You will even find it easy to carry out measurements in particularly large ducts. This is because the extendable telescope on the hot wire and vane probe (Ø 16 mm) with universal handle can be further extended using the telescope extension – enabling you to attain a total length of 2 metres

Carry out measurements at air/ceiling outlets effortlessly and without using a ladder. Fit the vane probe (Ø 100 mm) with the extendable telescope with 90° angle and, if necessary, with the telescope extension (both can be ordered separately)

Use the vane probes in conjunction with the testovent measurement funnels and flow straighteners to test incoming / outgoing air at plate outlets, ventilation grilles and swirl outlets

Practical Bluetooth interface: use the air velocity probes to measure without having to deal with any bothersome cables, operate the measuring instrument by pressing the button on the handle of the probe, e.g. start or stop a timed mean calculation

Use the practical magnets to securely attach the multifunction measuring instrument to metal surfaces (e.g. ventilation ducts)

testo 440 Air Velocity & IAQ Measuring Instrument

General technical data

Weight

250 g

Dimensions

154 x 65 x 32 mm

Operating temperature

-20 to +50 °C

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

Product colour

black/orange

Battery type

3 AA mignon 1.5 V

Battery life

12 h (typically vane measurement)

Interface

Bluetooth®; USB

Storage temperature

-20 to +50 °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

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