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- Differential pressure measurement, useful for checking filters in air conditioning and ventilation systems Calculate flow velocity and volume flow using an optional pitot tube Save measurement data for analysis and documentation Match with a Testo CEC compliant air flow capture hood to measure volume flows at supplies and returns (0563 4200)
- Differential Pressure:
- Measuring range -0.480 to 0.480 InH₂O / -120 to 120 Pa 19.7 to 2756 fpm / 0.1 to 14 m/s
- 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 0.01 fpm / 0.01 m/s
- Reaction time 1 sec (t90)
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- 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
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- Dimensions 6 x 3 x 1 in. / 150 x 85 x 35 mm
- Operating temperature 23° to 122 °F / -5 to 50 °C
- 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
- Memory 2 GB (internal)
- Storage temperature -4° to 140 °F / -20 to 60 °C
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Each Unit Includes
- Testo 420 differential pressure measuring instrument
- Batteries
- Certificate of calibration
