The new testo 420 flow hood is the light, precise and convenient solution for regulating volume flows at supplies and returns.
At turbulent outlets in particular, the flow straightener significantly improves measurement accuracy, saving you time and headaches for these difficult situations. Handling is especially easy with the low weight of less than 6.2 lbs. and ergonomic handles. The display can be tilted for more comfortable readout. In addition, Bluetooth will allow for connection to mobile devices, which can be used as a second display or remote control. This makes the use of a tripod (optional) for high ceilings especially easy. Furthermore, users can utilize the App to finalize and send measurement reports while still on site.
Features and specifications
|Testo 420 Set
testo 420 flow hood base, 24" x 24" flow hood,
USB cable, batteries, soft case w/ telescoping
handle and wheels, NIST
Réf. 0563 4200
|Detachable Differential Pressure (t420) instrument allows Pitot tube measurements in ducts (Pitot tube optional)|
|Compatibility||iOS 7.1 min. / Android 4.3 min.
Bluetooth 4.0 min.
|Operating temperature||23 to 140 °F / -5 ... +50 °C|
|Storage temperature||-4 to 140 °F / -20 ... +60 °C|
|Weight||6.3 lbs. / 2.9 kg|
|Standard hood||24" x 24" / 610 x 610 mm|
|Battery type||type AA|
|Battery life||40 h|
|Display||Dot matrix with illumination|
|Memory||2 GB internal|
|Volume flow||Temperature||Humidity sensor||Humidity sensor|
|Measuring range||50 to 2120 CFM||-4 to 158 °F /
(-20 to +70 °C)
|0 to 100 %RH||0 to 5" H2O /
(0 to 120 Pa)
|±3 % of m.v.||±0.9 °F (32 to 158 °F) /
±0.5 °C (0 to +70 °C)
|±1.8 %RH||±2 % of m.v.|
|Resolution||.5 CFM||0.1 °C||0.1 %RH||0.001 Pa|
|Functional principle of the flow straightener.||Flow straightener for significantly more precise measurements at turbulent outlets.||Bluetooth App allows for hands free operation, displaying measurement data on mobile devices and finalizing the measurement report on site||Sturdy, wheeled tripod (optional) with central fitting for safe measuring of high ceiling outlets|