Testo 420 Volume Flow Hood

The Testo 420 volume flow hood is the most advanced device widely used in the HVAC industry. This state-of-the-art device is used to measure volumetric flow, temperature, and pressure in ventilation systems, making it an indispensable tool for professionals in this field.
With the testo 420 volume flow hood for larger air inlets and outlets, you can quickly and precisely meet hygiene guidelines and indoor air quality requirements. It provides reliable support when calculating the total volume flow in HVAC systems, for example in hospitals, office buildings, or commercial buildings.

Testo 420 Air flow Capture

One of the greatest advantages of the TESTO 420 flow chamber is its accuracy. This device features a precision measurement tool that provides accurate readings so HVAC professionals can make informed decisions based on reliable data. Another advantage of this tool is its ease of use. Thanks to its intuitive user interface and user-friendly design, the TESTO 420 volume flow hood is easy to use, even for people with little or no experience in the industry.

Our site offers all kinds of Testo brand products such as testo 417 and testo 440. For more information about the testo 420 price and other products, contact our technical experts. Also, refer to the download link to download the testo 420 manual.

Testo 420 Volume Flow Measurement Specifications:

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 – Piezoresistive :

• 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)

420 air flow capture hood