OVERVIEW & SPECIFICATION
The compact testo 425 anemometer with permanently attached thermal flow probe (probe head Ø 7.5 mm) incl. telescopic handle. Volume flow is shown directly in the display. 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.
- Temperature, flow and volume flow measurement
- Multi-point and timed mean calculation
- Max/min values
- Hold button to freeze readings
- Display light
- Auto Off function
- TopSafe, the indestructible protective case (optional)
| Storage temperature | -40 to +85 °C |
| Operating temperature | -20 to +50 °C |
| Battery type | 9V block battery, 6F22 |
| Battery life | 20 h |
| Weight | 285 g |
| Dimensions | 182 x 64 x 40 mm |
| Material/Housing | ABS |
| Probe – NTC | |
| Meas. range | -20 to +70 °C |
| Accuracy | ±0.5 °C (0 to +60 °C)
±0.7 °C (remaining range) |
| Resolution | 0.1 °C |
| Probe – Thermo | |
| Meas. Range | 0 to +20 m/s |
| Accuracy | ±(0.03 m/s +5% of mv) |
| Resolution | 0.01 m/s |
testo-425
OVERVIEW & SPECIFICATION
The compact testo 425 anemometer with permanently attached thermal flow probe (probe head Ø 7.5 mm) incl. telescopic handle. Volume flow is shown directly in the display. 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.
- Temperature, flow and volume flow measurement
- Multi-point and timed mean calculation
- Max/min values
- Hold button to freeze readings
- Display light
- Auto Off function
- TopSafe, the indestructible protective case (optional)
| Storage temperature | -40 to +85 °C |
| Operating temperature | -20 to +50 °C |
| Battery type | 9V block battery, 6F22 |
| Battery life | 20 h |
| Weight | 285 g |
| Dimensions | 182 x 64 x 40 mm |
| Material/Housing | ABS |
| Probe – NTC | |
| Meas. range | -20 to +70 °C |
| Accuracy | ±0.5 °C (0 to +60 °C)
±0.7 °C (remaining range) |
| Resolution | 0.1 °C |
| Probe – Thermo | |
| Meas. Range | 0 to +20 m/s |
| Accuracy | ±(0.03 m/s +5% of mv) |
| Resolution | 0.01 m/s |
