Model: Testo 420
Order Code / Part No: 05634200
Description
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)
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)
Resolution:1 m³/h
Reaction time:1 s (t90)
Delivery Scope:
Testo 420 air capture hood including measuring instrument, 610 x 610 mm hood, 5 x tension rods, USB cable, batteries, trolley and calibration certificate.