The testo 420 volume flow hood for larger air inlets and outlets enables fast and precise compliance with hygiene guidelines and requirements concerning room air quality. It provides reliable support with the calculation of the overall volume flow on HVAC systems, for instance in hospitals, office buildings or commercial buildings.
testo 420 – volume flow hood
Make sure you get the testo 420 volume flow hood for larger ceiling outlets and at the same time enjoy multiple maintenance benefits on HVAC systems. Because the flow hood with the removable measurin instrument is not only exceptionally light, it also guarantees accurate volume flow calculations at swirl outlets
Product benefits:
- Volume flow hood for larger swirl outlets for measuring volume flow, temperature and relative humidity
- Impressively light with a weight of 2.9 kg
- Precise measurement even at swirl outlets thanks to integrated volume flow straightener
- Fast set-up, convenient operation and protocol creation on site using the App
- testo 420 volume flow hood including measuring instrument
- 610 x 610 mm hood
- 5 x tension rods
- USB cable
- batteries and trolley
Temperature – NTC
Technical data Measuring range -20 to +70 °C Accuracy ±0.5 °C (0 to +70 °C) ±0.8 °C (-20 to +0 °C) Resolution 0.1 °C Reaction time 45 s (t90)
Humidity – Capacitive
Technical data Measuring range 0 to 100 %RH Accuracy ±1.8 %RH + 3 % of mv at +25 °C (5 to 80 %RH) Resolution 0.1 %RH
Differential Pressure – Piezoresistive
Technical data Measuring range -120 to 120 Pa Accuracy ±2 % of mv + 0.5 Pa at +22 °C, 1013 hPa Resolution 0.001 Pa Reaction time 1 s (t90)
Absolute Pressure
Technical data Measuring range 700 to 1100 hPa Accuracy ±3 hPa Resolution 0.1 hPa Reaction time 1 s
