Download: testo 425 Thermal anemometer Data Sheet
testo 425 compact thermal anemometer with fixed velocity probe incl. temperature measurement and telescope (max. 820 mm), battery and calibration protocol
- Measurement of flow velocity, volume flow and temperature
- Point and timed mean value calculation
- Max./min. values
- Hold button for freezing measurement value
- Display illumination
- Auto-off function
- TopSafe, protection of the instrument from dirt and impact (optional)
Technical data
General technical data
| Oper. temp. | -20 to +50 °C |
| Storage temp. | -40 to +85 °C |
| Battery type | 9V block battery, 6F22 |
| Battery life | 20 h |
| Dimensions | 182 x 64 x 40 mm |
| Weight | 285 g |
| Material/Housing | ABS |
| Warranty | 2 years |
Sensor types
| Thermal | NTC | |
| Meas. range | 0 to +20 m/s | -20 to +70 °C |
| Accuracy ±1 digit |
±(0.03 m/s +5% of mv) | ±0.5 °C (0 to +60 °C) ±0.7 °C (remaining range) |
| Resolution | 0.01 m/s | 0.1 °C |

เกี่ยวกับเรา
ประวัติความเป็นมา
วีดีโอ
บทความ
ข่าวสาร
สอบเทียบ
Pressure & Vacuum
Dimension
Temperature & Humidity
Torque & Force
Electrical
Mass & Balance
Glassware & Chemical
Medical
Flow
อบรม
Promotion
Pressure & Vacuum
Dimension
Temperature & Humidity
Torque & Force
Electrical
Mass & Balance
Glassware & Chemical
Others












