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Testo 420 Volume Flow Hood for larger air inlets and outlets enables fast and precise calculation of the overall air capture on HVAC systems. It helps in frequent air capture calculations in large rooms and measurements above head height can also be carried out reliably and comfortably, thanks to its ergonomic handles and tiltable display which results in a significant loss in the overall weight of the instrument.
All measuring values are easy to read on the large display which has an illumination function. For analyses and documentation, measurement data can be saved and measurement protocols created directly on site using the App connection. Administration of the measurement data is very easy on the PC without any additional software via the plug & play function.
You merely have to attach a Pitot tube and connection hoses (both optional) for measurements in ducts. Timed and multi-point mean calculation, as well as the combination of the two, together with simple input of the duct geometry provide you with support for measurements in ducts.
- Significantly light with a weight of 2.9 kg
- Precise measurement even at swirl outlets
- App integration via Bluetooth for fast and easy monitoring and reporting on site
- Removable and tiltable measuring instrument with a large display
|Range||40 to 4000 m3/hr|
|Accuracy_1||±3 % of m.v. +12 m³/h at +22 °C, 1013 hPa (85 to 3500 m³/h)|
|Range||-20 to +70 °C|
|Display||Dot matrix with illumination 3.5 inch|
|Battery||Alkali manganese, mignon, Type AA|
|Operating Temperature||-5 to +50 °C|
|Operating Humidity||0 to 100 %RH|
|Battery Life||40 h (Zeroing interval 10 seconds, display illumination off, Bluetooth off)|
|Storage Temperature||-20 to +60 °C|
|Memory||2 GB internal (approx. 18,000 measurements)|