Testo 425 Telescopic Vane Anemometer, Measures Temperature, Volume, Air Velocity, Flow, 30 m/s

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Subtotal (1 unit)*

R 11 399,30

(exc. VAT)

R 13 109,20

(inc. VAT)

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  • 8 unit(s) ready to ship from another location
  • Plus 6 unit(s) shipping from 18 February 2026
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RS stock no.:
255-9513
Distrelec Article No.:
303-72-693
Mfr. Part No.:
0563 0425
Manufacturer:
Testo
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Brand

Testo

Measurement Parameters

Temperature, Volume, Air Velocity, Flow

Model Number

425

Product Type

Anemometer

Air Velocity Resolution

0.01m/s

Maximum Temperature Measurement

70°C

Probe Type

Telescopic Vane

Maximum Operating Temperature

50°C

Power Source

Battery

Battery Type

AA

Temperature Measurement Accuracy

±0.5°C

Maximum Air Velocity Measurement

30m/s

Temperature Resolution

0.1°C

Minimum Operating Temperature

-20°C

Air Velocity Accuracy

±5 % + 0.5 m/s

Battery Life

35h

Standards/Approvals

No

Weight

268g

Length

135mm

Height

28mm

Width

28 mm

Exempt

COO (Country of Origin):
DE
The Testo optimally adjusted air conditioning and ventilation systems are a decisive factor for modern buildings. Accordingly, it is important to use the appropriate measurement technology to ensure that the flow, temperature and volume flow in the ventilation duct are correct. The testo 425 thermal anemometer is your fast, easy and precise companion. The cable-connected telescopic probe can be extended up to 820 mm, making it easier to work overhead or in large diameter ducts.

Precise flow, temperature plus volume flow calculation

Timed and point mean value calculation

Operating temprature is -20 to +70 °C

Battery life is 35 hours

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