User manual

9. Technical data 31
9. Technical data
Characteristic Value
Parameters Flow velocity (m/s)
Temperature (°C/°F)
Measuring range 0...+20m/s
-20...+70°C/ -4...+158°F
Resolution 0.01m/s
0.1°C / 0.1°F
Accuracy ±0.03m/s+5% of reading
(±1 Digit) ±0.5°C/±0.9 °F (0...+60.0°C/+32...+140 °F)
±0.7°C/ ±1.3°F (rest of range)
Probe Telescopic flow velocity/temperature probe (hot wire probe)
with NTC temperature sensor (permanently connected)
Measuring rate 2/s
Operating temperature range -20...+50°C / -4...+122°F
Storage temperature -40...+85 °C / -40...+185°F
Voltage supply 1x 9V monobloc battery/rech. battery
Battery life approx. 20h
Protection class with TopSafe (accessory part): IP65
EC Directive 89/336/EEC
Warranty 2 years
10. Accessories/spare
parts
Name Part no.
TopSafe testo 425, protects from impact and dirt particles 0516 0221
For a complete list of all accessories and spare parts,
please refer to the product catalogues and brochures or
look up our website: www.testo.com
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