Datasheet

30
Thermal
anemometer
testo 405
Thermal
anemometer
testo 425
• Flow measuring instrument with temperature measurement
• Volumetric flow rate calculation to 99990 m³/h
• Extendible telescope to 300mm
• Measurement of flow, volumetric flow and temperature
• Single-point and multi-point mean calculation
• Max./min. values
testo 405
testo 405, thermo-anemometer with duct
bracket, incl. attachment clip and batteries
Order no. 0560 4053
testo 425
testo 425, compact thermal anemometer
with permanently connected flow probe, incl.
temperature measurement and telescope (max.
820mm), calibration protocol and battery
Order no. 0560 4251
Thermal NTC
Measuring
range
0 to 5m/s (-20 to 0°C)
0 to 10m/s (0 to +50°C)
0 to +99990 m³/h
-20 to +50°C
Accuracy
±1digit
±(0.1m/s + 5% of m.v.) (0
to +2m/s)
±(0.3m/s + 5% of m.v.)
(remaining meas. range)
± 0.5°C
Resolution 0.01m/s 0.1°C
Thermal NTC
Measuring
range
0 to +20m/s -20 to +50°C
Accuracy
±1digit
±(0.03m/s +5% of m.v.) ±0.5°C (0 to +60°C)
±0.7°C (remaining
meas. range)
Resolution 0.01m/s 0.1°C
More products and accessories can be found at testo.com
Flow testo 405/testo 425