Suzhou Norda Cleaning Tech Co., Ltd.
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Testo 425 is a kind of instrument to measure air velocity and temperature.
Summary
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.
Features
Specification
| 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 |
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