Flow meter / thermal anemometer testo 425

For the simultaneous measurement of air speed and temperature with calculation of mean values. Hold/max./min. and mean values switchable. For °C, °F, m/s, fpm. Battery condition indicator and Auto-OFF. With built-in flow/temperature sensor. With calibration protocol and batteries.

• Specifications
• Measuring range thermal: 0 … 20 m/s
• Accuracy: ±(0.03 m/s + 5 % of measured value)
• Measuring range NTC: -20 … 70 °C
• Accuracy: ±0.5 °C (0 … +60 °C)
  ±0.7 °C (remaining range)