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- Measuring menu for volume flow and determination of flow velocity in the ventilation duct- Measuring range- Absolute pressure: 700 to 1100 hPa- Temperature: -20 to +70 °C- Flow: 0 to 30 m/s- Ø probe head: 9 mm- RefNo.: 0563 4400- Scope of delivery:- testo 440 with batteries: 3 x Mignon AA (order no.: 62 079 47)- Wired hot-wire probe- Basic case
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