Testo 420 Volume Flow Hood for Large Ceiling Air Outlets
Ensure accurate and efficient HVAC measurements with the testo 420 volume flow hood, designed for larger ceiling air inlets and outlets while offering multiple maintenance advantages.
Key Features and Benefits
– Provides precise volume flow calculations at swirl outlets, reducing measurement errors caused by turbulent air
– Integrated volume flow straightener creates a uniform air flow, supporting measurements from 80 to 3 500 m3/h
– Supports compliance with hygiene standards and indoor air quality requirements in hospitals, offices, and commercial buildings
Ergonomic Design and Portability
– Lightweight design under 2.9 kg for comfortable operation at height or in large rooms
– Ergonomic handles and tiltable display enhance usability
– Large measurement button ensures easy recording of data
Hood Dimensions and Accessories
– Hood size: 610 x 610 mm
– Optional additional hoods available for extra ceiling outlets
– Tripod arm extends up to 3.3 metres for high ceiling measurements
– Quick setup with tension rods; safe transport using included trolley
Smart App Integration
– Connect via Bluetooth to the testo Smart App on smartphones or tablets
– Use as a secondary display, manage customer and measurement data, and remotely control the device
– Perform live measurements on HVAC systems with start and stop functions
– Generate measurement reports on-site and export as PDF, Excel, or JSON files
Advanced Measuring Instrument
– Detachable and tiltable instrument for easy reading
– Measures flow velocity, volume flow, absolute pressure, temperature, and relative humidity
– Automatic zeroing improves accuracy at low pressures
– Illuminated display for clear readings
– Save data on-site and manage measurement protocols via plug & play on PC
Extended Functionality for Duct Measurements
– Detachable instrument can measure in ducts using optional Pitot tube and hoses
– Supports timed and multi-point mean calculations with duct geometry input
– Compatible with testo 400 VAC multifunction instrument via Bluetooth for complete customer and site management
The testo 420 volume flow hood combines accuracy, portability, and smart functionality, making it ideal for HVAC systems in large spaces and high ceilings while reducing the need for additional measuring instruments.
Standard set: testo 420 volume flow hood, tension rods, USB cable, batteries, trolley, calibration protocol.
