- Impressively light with a weight of 2.9 kg and ergonomic design
- Flow straightener for more precise measurement at swirl outlets
- Fast set-up, convenient operation and protocol creation on site using the App
- Removable and tiltable measuring instrument
The testo 420 air capture 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 air capture on HVAC systems, for instance in hospitals, office buildings or commercial buildings.
The testo 420 air capture hood means you can significantly reduce these measurement errors. The integrated air capture straightener calms the turbulence and converts it into a virtually uniform air flow. This enables accurate calculation of air capture in the 80 to 3,500 m3/h range.
Exceptionally light air capture hood with fast set-up
The air capture hood with ergonomic handles and tiltable display has an exceptional weight of less than 2.9 kg. This means that frequent air capture calculations in large rooms and measurements above head height can also be carried out reliably and comfortably. In the process, a large measuring button on the air capture hood ensures easy recording of the readings.
The dimensions of the hood are 610 x 610 mm. We offer additional hoods as accessories for further ceiling outlets. The use of our optional tripod arm is a great help for air inlets and outlets which are located very high up. It can be extended up to 4 metres.
The air capture hood is quick and easy to set up thanks to tension rods. The trolley which is included in the packaging ensures safe transport.
Create protocols directly on site and mail them using the App connection
Packaged Inclusions:
| Temperature – NTC | |
| 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 | |
| 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 | |
| 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 | |
| Measuring range | 700 to 1100 hPa |
| Accuracy | ±3 hPa |
| Resolution | 0.1 hPa |
| Reaction time | 1 s |
| Volume flow | |
| Measuring range | 40 to 4000 m³/h |
| Accuracy | ±3 % of mv + 12 m³/h at +22 °C |
| 1013 hPa (85 to 3500 m³/h) | |
| Reaction time | 1 s (t90) |
| Resolution | 1 m³/h |
| General technical data | |
| Dimensions | 610 x 610 mm (Standard hood) |
| Operating temperature | -5 to +50 °C |
| EU-/EG-guidelines | EU-guideline 2014/30/EU |
| Battery type | Alkali manganese, mignon, type AA |
| Battery life | 40 h |
| Display size | 3.5″ |
| Display function | Dot matrix |
| Display ligthing | with illumination |
| Interface | Micro-USB; Bluetooth® 4.0 wireless technology |
| Memory | 2 GB (internal) |
| Storage temperature | -20 to +60 °C |
| Weight | 2900 g |