Product Overview

testo 425
Technical data / Accessories
testo 425
testo 425 compact thermal anemometer with
fixed velocity probe incl. temperature
measurement and telescope (max. 820 mm),
battery and calibration protocol
Part no. 0560 4251
General technical data
Operating temperature -20 to +50 °C
Storage temperature -40 to +85 °C
Battery type 9V block battery, 6F22
Battery life 20 h
Dimensions 182 x 64 x 40 mm
Weight 285 g
Housing material ABS
Warranty 2 years
Accessories
Part no.
0516 0210Case for measuring instrument and probes
0516 0221
0554 0025
0515 0025
0520 0004
0520 0034
TopSafe, protects from impact and dirt
Recharger for 9V rechargeable battery, for external recharging of 0515 0025 battery
9V rech. battery for instrument, instead of battery
ISO calibration certificate velocity
hot wire, vane anemometer, Pitot tube; calibration points 1; 2; 5; 10 m/s
ISO calibration certificate velocity
hot wire, vane anemometer, Pitot tube; calibration points 5; 10; 15; 20 m/s
www.testo.com
Sensor types
Thermal NTC
Measuring range 0 to +20 m/s -20 to +70 °C
Accuracy
±1 digit
±(0.03 m/s +5% of m.v.) ±0.5 °C (0 to +60 °C)
±0.7 °C (remaining range)
Resolution 0.01 m/s 0.1 °C
0981 9664/msp/A/08.2015Subject to change without notice.
We measure it.
0520 0024ISO calibration certificate velocity
hot wire, vane anemometer; calibration points 0.3; 0.5; 0.8; 1.5 m/s
0516 1201Service case for measuring instrument and probe, dimensions 454 x 316 x 111 mm
testo-425-P02 20.08.2015 08:00 Seite 2