KEY FEATURES

• Measures flow velocity, volume flow, differential pressure, temperature, and humidity
• High accuracy for swirl outlets thanks to integrated flow straightener
• Wide measuring range: 50 to 4000 m³/h
• Removable, tiltable control panel with illuminated display
• Bluetooth connectivity for wireless operation via the Testo 420 App
• On-site report generation and direct email function
• Compatible with iOS (12.0+) and Android (6.0+) devices
• USB data transfer with 2 GB internal memory
• Long battery life up to 40 hours
• Compact, lightweight, and easy to transport

The Testo 420 – Air Flow Hood provides a highly effective, industrial-tier solution for complex air distribution commissioning, volumetric grid balancing, and workplace indoor air quality management. Traditional velocity measurement profiles often return erratic errors at diffuse supply registers due to turbulent swirls; by feeding the exhaust stream directly through its proprietary honeycomb matrix straightener, the Testo 420 ensures unmatched cross-sectional assessment stability. Technicians can detach the tiltable 3.5-inch dot-matrix command panel to monitor data comfortably from ground level, eliminating repetitive overhead strain. With data streaming natively to smart devices up to ten metres away and an efficient plug-and-play micro-USB computer link, this high-performance monitoring asset minimizes system downtime and guarantees verified diagnostic precision.

ADDITIONAL FEATURES

• Integrated high-performance piezoresistive core delivers a sensitive 0.001 Pa differential pressure resolution
• Substantial 2 GB internal storage folder retains massive logs over multi-week facility assessment operations
• Automated air density tracking routines run continuous calculation compensations for precise volume flows
• Rugged housing assembly features a high protection class rating optimized for rough commercial jobsite wear
• High-efficiency circuit network operates continuously for up to 40 hours on standard replaceable AA batteries
• Quick-release framework simplifies fabric canvas disassembly and storage routines between system sites

APPLICATIONS

• Perfectly optimized for precise volumetric airflow balancing, differential pressure filter evaluation, indoor climate checkouts, and air velocity mapping across high-turbulence swirl diffusers, ventilation ducts, and commercial HVAC systems.

PRODUCT PACKAGE INCLUDES

• 1 x Testo 420 Air Flow Hood Assembly Base (SKU: TES-0563-4200)
• 1 x Standard 610 x 610 mm Fabric Measurement Hood Frame
• 1 x Removable, Tiltable Control Panel Module
• 1 x Micro-USB Interface Connection Cable
• 6 x AA Alkali Manganese Batteries

SPECIFICATIONS

The contents of this document are provided as a guide only and are subject to change without prior notice, and without any subsequent liability to Parkway Process Solutions Pty Ltd (the “Company”) or any of its related entities. The actual shape, colour, size, performance and/or any other parameters of the item/s and/or product/s and/or system/s supplied by the Company, may vary materially from those outlined by the Company.

All brand names and product names outlined in this document are either trademarks or registered trademarks and belong to the respective companies.

ALL INFORMATION OUTLINED HEREIN IS PROVIDED AS A GUIDE ONLY AND SHOULD NOT BE RELIED UPON FOR ANY PURPOSE, WITHOUT CONFIRMING SUCH DETAILS WITH THE COMPANY BEFORE MAKING A PURCHASE AND/OR UTILISING A GIVEN PRODUCT.

ADDITIONAL RESOURCES

PRODUCT BROCHURE

General information about the Testo 420 – Air Flow Hood is outlined in below brochure.

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