Flow Hood Balometer

Testo - 420

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Description

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 Certificate 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
Interface	Micro USB
Warranty	2 years

Sensor types

	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)
Accuracy ±1 digit	±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