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testo 420 - volume flow hood
Product no. 0563 4200Make sure you get the testo 420 volume flow hood for larger ceiling outlets and at the same time enjoy multiple maintenance benefits on HVAC systems. Because the flow hood with the removable measuring instrument is not only exceptionally light, it also guarantees accurate volume flow calculations at swirl outlets
Technical data
Temperature - NTC
| Measuring range |
-20 to +60 °C
|
|---|---|
| Accuracy |
±0.8 °C (-20 to +0 °C)
±0.5 °C (0 to +60 °C)
|
| Resolution |
0.1 °C
|
| Reaction time |
45 s (t₉₀)
|
Humidity - Capacitive
| Measuring range |
0 to 100 %RH
|
|---|---|
| Accuracy |
±1.0 %rF/year Drift
±0.03 %RH/K (at 0 to 60 °C )
±1.0 %rF Hysterese
±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)
|
Absolute Pressure
| Measuring range |
700 to 1100 hPa
|
|---|---|
| Accuracy |
±3 hPa
|
| Resolution |
0.1 hPa
|
| Reaction time |
1 s
|
Volume flow
| Measuring range |
50 to 4000 m³/h
|
|---|---|
| Accuracy |
1013 hPa (85 to 3500 m³/h)
±3 % of mv + 12 m³/h at +22 °C
|
| Reaction time |
1 s (t₉₀)
|
| Resolution |
1 m³/h
|
General technical data
| Weight |
2900 g
|
|---|---|
| Dimensions |
610 x 610 mm (Standard hood)
|
| Operating temperature |
-5 to +50 °C
|
| System requirements |
requires iOS 12.0 or newer; requires Android 6.0 or newer; requires mobile end device with Bluetooth 4.0
|
| EU-/EG-guidelines |
EU-guideline 2014/30/EU
|
| Battery life |
40 h
|
| Battery type |
Alkali manganese, mignon, type AA
|
| Display function |
Dot matrix
|
| Display ligthing |
with illumination
|
| Display size |
3.5"
|
| Data transfer |
Bluetooth®
|
| Interface |
Micro-USB; Bluetooth® 4.0 wireless technology
|
| Radio range |
10 m
|
| Memory |
2 GB (internal)
|
| Storage temperature |
-20 to +60 °C
|