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Hot-wire anemometer testo 425

Hot-wire anemometer for simple, fast, and precise flow and temperature measurement as well as volume flow calculation. Measurement data can be transmitted to smartphones or tablets via Bluetooth®. The connection to the free testo Smart App enables configuration of the device as well as display, storage, and documentation of measurements.

  • Cable-connected, extendable telescopic probe up to 820 mm
  • Time and point averaging
  • Quick in-app configuration, graphic history, second screen, and measurement data memory in the testo Smart App
  • Compact design with sturdy housing
  • Hold function
  • Display of min./max. value


Scope of supply: Hot-wire anemometer with telescopic probe, transport bag, calibration protocol, batteries

Hot-wire anemometer testo 425
Measuring range velocity:0.01 ... 30 m/s
Accuracy velocity:±0.03 m/s + 4 % of measured value (0.01 ... 20 m/s) / ±0.5 m/s + 5 % of measured value (20.01 … 30 m/s)
Resolution velocity:0.01 m/s
Temperature range:-20 ... 70 °C
Accuracy temperature:±0.5 °C
Resolution temperature:0.1 °C
Compatibility mobile device:Requires iOS 13.0 or newer, Android 8.0 or newer, Bluetooth® 4.2.
Cable length:1.5 m
Dimensions probe (L x Ø):180 x 7.5 mm
Power supply:3 x AA
IP code:IP 40 device, IP 20 probe

Hot-wire anemometer testo 425


Testo SE & CO Thermal hot-wire anemometer testo 425 05630425
Testo SE & CO Thermal hot-wire anemometer testo 425 05630425
PART NO.4AJ-4687947
77600||77902||77426||78333||78163||77877||77194||78065
Type||Width mm||Depth mm||Height mm||Dimensions (WxDxH)||Weight g||Type of auxiliary energy||PK
testo 425||60||135||28||60 x 135 x 28 mm||268||Battery||1
Testo SE & CO
05630425
TESTO425

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