You can keep a close eye on indoor air quality with the testo 445 climate measuring instrument: the allrounder can measure up to 6 parameters (with the appropriate probe), which can help you make a professional assessment of indoor air quality. The climate measuring instrument therefore supports you in adjusting and checking ventilation and air conditioning systems.

Use the 25 mm vane probe to determine flow velocity and volume flow in ventilation ducts. It is particularly suitable for flow velocities of up to +20 m/s and can also be used at high temperatures of up to +350 &deg;C.

The vane probe (in conjunction with the appropriate measuring instrument) is ideal for determining flow velocity and volume flow in ventilation ducts. It can also be used at high temperatures of up to +350 &deg;C.

Vane probe (Ø 25 mm) for ventilation ducts 

High temperature vane probe, Ø 25 mm, with handle for contin...

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Velocity / Volume flow	Measuring range +0,6 to +20 m/s
Velocity / Volume flow	Accuracy ±(0,3 m/s + 1,0 % of fsv)

General technical data	Length probe shaft 560 mm
General technical data	Probe head diameter 25 mm

Vane probe (Ø 25 mm) - can be used at high temperatures

Vane probe (Ø 25 mm) - can be used at high temperatures

Temperature - TC Type K (NiCr-Ni)

Temperature - TC Type K (NiCr-Ni)

Velocity / Volume flow

Velocity / Volume flow

General technical data

General technical data

Temperature - TC Type K (NiCr-Ni)	Measuring range -40 to +350 °C