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testo 440 Air Velocity and IAQ Measuring Instruments

Versatile and compact. 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.
  • Intuitive: clearly structured measurement menus for the most important applications.
  • 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.

testo 440 dP:
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.

testo 440 16 mm vane kit:
For carrying out measurements at air outlets. The testo 440 measuring instrument and the vane probe (Ø 16 mm).

testo 440 100 mm vane kit with Bluetooth®:
For carrying out measurements at air outlets. Keep the testo 440 measuring instrument and the vane probe (Ø 100 mm) with Bluetooth® safely stowed away in the case. Incl. temperature sensor.

testo 440 humidity kit with Bluetooth®:
For carrying out measurements in storage, refrigeration and work rooms, in ventilation ducts and also on refrigeration systems and heat pumps. Keep the testo 440 measuring instrument and the humidity / temperature probe with Bluetooth® safely stowed away in the case.
Technical Data:
Dimensions:
Operating temperature:
154 x 65 x 32 mm
- 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, 1 x differential pressure (internal, nur 440 dP)
Battery type:
Battery life:
3 AA mignon 1.5 V
12 h (typically vane measurement)
Data transfer:
Storage temperature:
Bluetooth®; USB interface
- 20 to + 50 °C
Weight:250 g
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 Typ K (NiCr-Ni)
Measuring range:

- 200 to + 1370 °C
Accuracy:± (0.3 °C + 0.3 % of mv)
Resolution:0.1 °C
Differential pressure (440 dP) - piezoresistive
Measuring range:

- 150 to + 150 hPa
Accuracy:± 0.05 hPa (0 to 1.00 hPa)
± 0.2 hPa + 1.5 % of mv
(1.01 to +150 hPa)
Resolution:0.01 hPa
 Video 1
 Video 2
testo  testo 440 Air Velocity and IAQ Measuring Instruments
testo  testo 440 Air Velocity and IAQ Measuring Instrumentstesto  testo 440 Air Velocity and IAQ Measuring Instrumentstesto  testo 440 Air Velocity and IAQ Measuring Instrumentstesto  testo 440 Air Velocity and IAQ Measuring Instruments  
TypePUOrder No.in StockPrice/Unit/NOK 
testo 440 air velocity and IAQ measuring instrument15445236-on demand 
testo 440 dP air velocity and IAQ measuring instrument with differential pressure sensor15445237-on demand 
testo 440 16 mm vane kit15445373-on demand 
testo 440 100 mm vane kit with Bluetooth®15445374-on demand 
testo 440 humidity kit with Bluetooth®15445375-on demand 
Accessories:
Digital flow probes for testo 440 measuring instruments / testo
Digital comfort probes for testo 440 measuring instruments / testo
Temperature probes for testo 440 measuring instruments / testo
Combi-case for testo 440 and multiple probes / testo