Description
Delivery scope
Technical Data
Datasheet
Instruction manual
Description
The compact hot wire anemometer testo 425 with telescopic probe is ideal for simple, fast and precise determination of flow velocity and volume flow in ventilation ducts of air conditioning and ventilation systems.
Delivery scope
testo 425 – Thermal hot wire anemometer with App connection and fixed telescope (max. 820 mm)
Transport bag
Calibration protocol
3 x AA batteries
Technical Data
| General technical data | |
| Weight | 268 g |
| Dimensions | 135 x 60 x 28 mm |
| Protection class | IP40 IP20 |
| Battery type | 3x AA |
| Cable length | 1.5 m |
| Diameter probe shaft | 7.5 mm |
| Product-/housing material | ABS + PC / TPE |
| Battery life | 35 h |
| Operating temperature | -20 to +50 °C Probe: -20 to +70 °C |
| Storage temperature | -20 to +50 °C |
| Temperature – NTC | |
| Measuring range | -20 to +70 °C |
| Accuracy | ±0.5 °C |
| Resolution | 0.1 °C |
| Velocity -Thermal anemometer | |
| Measuring range | 0.01 to 30 m/s |
| Accuracy | ±(0.03 m/s + 4.0 % of mv) (0.01 to +20 m/s) ±(0.5 m/s + 5.0 % of mv) (20.01 to +30 m/s) |
| Resolution | 0.01 m/s |
Datasheet
Instruction manual
