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model 425 – for measurements of ventilation quality

model 425, is a thermal anemometer with permanently attached flow probe (7.5 mm probe head dia), incl. temperature measurement and telescopic handle (max. 820 mm), battery and calibration protocol

The compact model 425 anemometer with permanently attached thermal flow probe (7.5 mm probe head dia)) 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
Protective case (optional) for protection from dirt & knocks

Technical

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
Temperature Probe type: NTC
Meas. range ………… -20 to +70 °C
Accuracy ………… ±0.5 °C (0 to +60 °C)

………… ±0.7 °C (remaining range)
Resolution
………… 0.1 °C
Velocity probe type: Thermal
Meas. Range
………… 0 to +20 m/s
Accuracy
………… ±(0.03 m/s +5% of mv)
Resolution ………… 0.01 m/s

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