420 – Air flow Capture Hood

Temperature – NTC
Measuring range     -4° to 140 °F / -20 to +60 °C
Accuracy   ±1 °F (32° to 140 °F) / ±0.5 °C (0 to +60 °C)   ±1.4 °F (-4° to 32 °F) / ±0.8 °C (-20 to +0 °C)
Resolution  0.1 °F / 0.1 °C
Reaction time  45 sec (t90)
Humidity – Capacitive
Measuring range  0 to 100 %rH
Accuracy  ±1.8 %rH + 3 % of mv at +77 °F / ±1.8 %RH + 3 % of mv at +25 °C  (5 to 80 %rH)
Resolution   0.1 %rH
Differential Pressure
Measuring range   -0.480 to 0.480 InH₂O / -120 to +120 Pa
Accuracy    ±2 % of mv + 0.002 InH₂O at +72 °F, 405 InH₂O / ±2 % of mv + 0.5 Pa at +22 °C, 1013 hPa
Resolution   0.001 InH₂O / 0.001 Pa
Reaction time   1 sec (t90)
Absolute Pressure
Measuring range   280 to 440 InH₂O / 700 to 1100 hPa
Accuracy   ±1 InH₂O / ±3 hPa
Resolution   0.1 InH₂O / 0.1 hPa
Reaction time   1 sec
Volume flow
Measuring range   29 to 2354 CFM / 50 to 4000 m³/h
Accuracy   ±3 % of mv + 7 CFM at +72 °F / ±3 % of mv + 12 m³/h at +22 °C   405 InH₂O (50 to 2060 CFM) / 1013 hPa (85 to 3500 m³/h)
Resolution  1 CFM / 1 m³/h
Reaction time  1 sec (t90)
Weight  102 oz. / 2900 g
Dimensions  24 x 24 in. (Standard hood) / 610 x 610 mm (Standard hood)
Operating temperature   23° to 122 °F / -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 type  Alkaline, 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
Data transfer  Bluetooth®
Radio range  32.808 ft. / 10 m
Memory 2 GB (internal)
Storage temperature  -4° to 140 °F / -20 to +60 °C