testo 425 - Air Velocity Meter with thermal flow probe
- Temperature and flow measurement as well as volumetric flow calculation
- Permanently attached extendible telescopic probe
- With single and multi-point averaging
- Hold function, display of min/max value, Auto-off function
The functional testing of ventilation and air conditioning systems includes monitoring the flow speed in ventilation ducts. If the air flow velocity and volumetric flow are not set correctly, the room air quality may suffer. The testo 425 air velocity meter measures the air velocity and automatically calculates the volumetric air flow.