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Testo 425 thermal anemometer, zip type case, batteries, calibration protocol and manual
The Testo 425 thermal air velocity meter covers the air velocity range from 0.01 to 30 m/s and the temperature range from - 20 to 70 °C. The compact 425 uses a heated wire NTC sensor on a hand held telescopic probe to measure velocity and temperature for applications in the HVAC industry.
The 417 can also be used with the free to download Testo Smart App that turns your smart phone or tablet into a second display. This easy to use software has menus for numerous applications, and you can create digital reports with photos that can be e-mailed.
Measuring ranges 0.1 to 30 m/s, - 20 to 70 °C
Accuracies ±(0.03 m/s + 4.0 % of mv) (0.01 to +20 m/s), ±(0.5 m/s + 5.0 % of mv) (20.01 to +30 m/s), 0 to 60 °C; ± (0.5 °C)
Resolutions 0.01 m/s, 0.1 °C
Operating temperature - 20 to + 70 °C
Probe head 7 mm diameter x 820 mm maximum length
Cable length 1.5 m
Battery 3 x AA batteries
Battery life 35 hours typical
Weight 268 g
Dimensions 135 mm x 60 mm x 28 mm
Materials ABS + PC / TPE