Phone: 253-927-6186
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Hot wire probe anemometer.

425 Hot Wire Anemometer.
Air Flow Velocity Temperature Measurement.
testo 425, thermal anemometer with permanently attached flow probe, incl. temperature measurement and telescopic handle (max. 820 mm), battery and calibration protocol.
The compact testo 425 anemometer with permanently attached thermal flow probe (probe head Φ 7.5 mm) incl. telescopic handle. Volume flow is shown directly in the display.

425 Hot Wire Anemometer.

Model  Description 
0560 4251  425 CFM Hot-Wire Anemometer

Accurate volume flow calculation thanks to easy input of duct area. In addition, it is also possible to switch to the current temperature reading.
Timed and multi-point mean calculation provide information on mean volume flow, flow speed and temperature reading.
Min/max values can also be shown in the display.
The Hold function makes it possible to freeze current readings in the display.

Storage temperature  -40 to +85 °C 
Operating temperature  -20 to +50 °C 
Probe type Hot Wire   
Meas. Range  0 to +20 m/s 
Accuracy  ±(0.03 m/s +5% of mv)
Resolution  0.01 m/s 
Probe type NTC   
Meas. range  -20 to +70 °C 
Resolution  0.1 °C 
Accuracy  ±0.5 °C (0 to +60 °C)
±0.7 °C (remaining range) 
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Hotek Technologies, Inc
tel: 253-927-6186