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Testo 0635 1543
Thermal Flow Probe with Telescoping Handle

  • 4 functions in 1 probe: measurement of flow, temperature, humidity and absolute pressure
  • With robust, non-rotatable telescope (can be extended to 1100 mm)
  • Intelligent calibration concept
  • Flow measuring range: 0 to +20 m/s
  • plug in head cable 0430 0100 is needed for this probe
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Testo 0635 1543 Shown
Product Information
Manual 811 KB PDF
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Use the Testo 0635 1543 hot wire probe (thermal anemometer) to determine flow velocity and volume flow in ventilation ducts or at wall/ceiling outlets. It is particularly suitable for low and medium flow velocities up to +20 m/s. The probe can also measure temperature, humidity and absolute pressure simultaneously.

The 0635 1543 hot wire probe is equipped with a robust, non-rotatable telescope, which can be extended to a maximum length of 1100 mm. The immersion depth is easy to read off thanks to the scaling on the telescope.

For easier handling, the 0635 1543 probe can be bent up to an angle of 90°. On the handle there is a practical measuring button, which activates storage of the readings. So you can fully focus on the positioning of the probe in the ventilation duct.

Ordering Information
Model Description Buy Now Price
0635 1543 Testo 0635 1543 Thermal Flow Probe with Telescoping Handle Buy Now Sale $619.20
(Reg. $688.00)
Optional Accessories
0430 0100 Testo 0430 0100 Plug In Head Cable for 480 High-End VAC Measuring Instrument Buy  Now Sale $55.80
(Reg. $62.00)