Description
The Testo 0563 4200 is the testo 420 volume flow hood, used by HVAC balancing technicians and commissioning agents to measure air volume at swirl, ceiling and grille diffusers. A flow straightener inside the hood evens out turbulent air from the outlet, which improves reading stability. Besides volume flow, the base unit records temperature, humidity, differential and absolute pressure. Readings can be viewed on the tilting display or on a smartphone through the testo 420 app, which also creates and emails reports from the site.
Key features
- Integrated flow straightener for steadier readings at swirl diffusers
- Volume flow range of 40 to 4000 m³/h
- Built-in temperature, humidity and pressure sensors
- Bluetooth 4.0 and app for remote reading, operation and reporting
- Tilting control unit and 2900 g total weight for overhead work
- Optional tripod and four additional hood sizes
Typical applications
- Air balancing of commercial HVAC systems
- Commissioning and TAB reports
- Cleanroom and laboratory airflow verification
- Ventilation checks in offices and hospitals
Specifications
| Brand | Testo |
|---|---|
| Model | 0563 4200 (testo 420) |
| Product type | Volume flow hood |
| Volume flow range | 40 to 4000 m³/h (24 to 2354 CFM) |
| Volume flow accuracy | ±3% of mv +12 m³/h (85 to 3500 m³/h) |
| Differential pressure | -120 to 120 Pa |
| Absolute pressure | 700 to 1100 hPa |
| Temperature | -20 to 70 °C |
| Humidity | 0 to 100 %RH |
| Standard hood size | 610 x 610 mm |
| Interface | Micro-USB, Bluetooth 4.0 |
| Memory | 2 GB internal |
| Power | AA alkaline batteries, approx. 40 h |
| Weight | 2900 g |
What’s included
- testo 420 base unit with Bluetooth
- 610 x 610 mm hood with flow straightener
- USB cable
- Batteries
- Soft case with telescoping handle and wheels





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