Hot wire probe (Ø 12 mm) - for flow, temperature and humidity

Order-Nr.  0635 1535

SAR 2,344
excl. VAT 
  • 3 functions in 1 probe: measurement of flow, temperature and humidity

  • Probe head diameter: 12 mm – also suitable for measurements in ventilation ducts

  • With telescope (can be extended to 745 mm)

  • Flow measuring range: 0 to +20 m/s

Product no longer available. Have you checked out its successor?
Why not enjoy the benefits that it has to offer:
>> To the product (fixed cable)
>> To the product (wireless, with Bluetooth)
Please note that the successor products are only compatible with testo 400 or testo 440.


Product Description

Use the hot wire probe (thermal anemometer) to determine flow velocity and volume flow in ventilation ducts or at ventilation outlets. It is particularly suitable for low and medium flow velocities up to +20 m/s. The probe can also measure temperature and humidity simultaneously.

The hot wire probe is equipped with a telescope, which can be extended to a maximum length of 745 mm.

Delivery Scope

Hot wire probe (Ø 12 mm) with telescope (can be extended to 745 mm) including fixed cable 0.8 m.

Technical Data

Temperature - NTC

Measuring range

-20 to +70 °C


±0.3 °C

Humidity - Capacitive

Measuring range

0 to +100 %RH


±2 %RH (+2 to +98 %RH)

Velocity - Hot wire

Measuring range

0 to +20 m/s


±(0.03 m/s + 4 % of mv)

General technical data

Cable length

0.8 m

Length telescope

745 mm

Probe head diameter

12 mm

SAR 2,344
excl. VAT