The testo 420 accurate, lightweight flow hood with Bluetooth is the precise and convenient solution for measuring volume flows at supplies and returns.
Handling this capture hood with flow straightener and tiltable display is especially easy with the low weight of less than 6.2 lbs. and ergonomic handles.
Key Features:
Rugged and tough flow hood that weighs less than 2.9 kgs.
Large, easy to read, tiltable, backlit display (removable) makes it easy to see the readings
Flow straightener for more precise measurement at turbulent outlets
App integration via Bluetooth for fast and easy monitoring and reporting on site
Temperature – NTC Technical data Measuring range -20 to +70 °C Accuracy ±1 ±0.5 °C (0 to +70 °C) ±0.8 °C (-20 to +0 °C)
Resolution 0.1 °C Reaction time 45 sec (t90)
Top Humidity – Capacitive Technical data Measuring range 0 to 100 %rH Accuracy ±1.8 %rH + 3 % of remaining measurement value at +77 °F / ±1.8 %RH + 3 % of mv at +25 °C (5 to 80 %rH) Resolution 0.1 %rH Top Differential Pressure Technical data Measuring range -120 to 120 Pa Accuracy ±2 % of remaining measurement value Pa at ±2 % of mv + 0.5 Pa at +22 °C, 1013 hPa
Resolution 0.001 Pa Reaction time 1 sec (t90)
Top Absolute Pressure Technical data Measuring range 700 to 1100 hPa Accuracy ±3 hPa Resolution 0.1 hPa Reaction time 1 sec Top Volume flow
Review: Article – Importance of Air Balancing
Technical data
Measuring range 40 to 4000 m³/h Accuracy ±3 % of remaining measurement value + 12 m³/h at +72 °F / ±3 % of mv + 12 m³/h at +22 °C 1013 hPa (85 to 3500 m³/h)
Reaction time 1 sec (t90) Resolution 1 m³/h
Top General technical data Technical data EU-/EG-guidelines EU-guideline 2014/30/EU
Warranty 2 years
Battery type Alkali manganese, mignon, type AA Battery life 40 h
Dimensions 24 x 24 in. (Standard hood) / 610 x 610 mm (Standard hood)
Display size 3.5″ Display function Dot matrix Display lighting with illumination Interface Micro-USB
Operating temperature -5 to +50 °C Memory 2.0 GB
Storage temperature -20 to +60 °C Weight 2900 g
testo 420, testo flow hood, testo420, testo 420 flow hood, testo 420 volume flow hood, testo hood, testo air flow hood, testo 420 flow hood kit, 0563 4200, testo 0563 4200
