Testo 420 Flow Hood Air Flow Meter for Airflow, air velocity, volume flow, temperature, and relative humidity HVAC Air Flow Meter CFM with Tiltable Display, Bluetooth, and App Compatibility Flow Hood with NIST

testo 420 airflow capture hood - Rapid measurements of airflow in large rooms and swirl outlets Volume flow is frequently measured at swirl outlets, and airflow measurements are often incorrectly measured due to the turbulent air from these outlets. The testo 420 volume flow capture hood with its removable control unit offers a convenient solution for measurements of flow velocity, volume flow, absolute pressure, temperature and relative humidity in large rooms and swirl outlets. Automatic zeroing ensures a higher accuracy for low pressure. Technical Data: TEMP measuring range: -4 to 158 F / -20 to +70 C Accuracy: +-1 F (32 to 158 F) / +-0.5 C (0 to +70 C) / +-1.4 F (-4 to 32 F) / +-0.8 C (-20 to +0 C) Humidity measuring range: 0 to 100 %r H Accuracy: +-1.8 %rH 3 of mv at +77 F / +-1.8 %RH 3 of mv at +25 (5 to 80 %rH) Differential Pressure measuring range: - to InH2O / -120 to +120 Pa Accuracy: +-2 of mv InH2O at +72 F, 405 InH2O / +-2 of mv 0.5 Pa at +22 C, 1013 hPa Absolute pressure measuring range: 280 to 440 InH2O / 700 to 1100 hPa Accuracy: +-1 InH2O / +-3 hPa Volume flow measuring range: 24 to 2354 CFM / 40 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) Dimensions: 24 x 24 in. (Standard hood) / 610 x 610 mm (Standard hood) Weight: 102 oz. / 2900 g Battery life: 40 hours Delivery Scope testo 420: 1 x testo 420 airflow capture hood control unit including USB cable and batteries, 1 x Flow straightener, 1 x Soft-shell protective case Delivery Scope testo 420 with NIST: 1 x testo 420 airflow capture hood control unit including USB cable and batteries, 1 x Flow straightener, 1 x Soft-shell protective case, 1 x NIST

Versatile: The testo 420 balometer flow hood provides reliable data for air velocity, volume flow, absolute and differential pressure, air temperature, as well as relative humidity,Efficient: The unique CEC approved flow straightener converts the turbulent air into a virtually uniform airflow, achieving particularly accurate data and calculations,Easy operation: Thanks to the lightweight design, ergonomic handles and tiltable display, the durable air velocity meter offers a convenient application of overhead measurements,MeasureQuick App: Follow all measurements remotely via Bluetooth from a smartphone or tablet. Send results directly from the job site for a more convenient documentation,Accurate: Take advantage of three calibrated temperature points with the included NIST. The calibration ensures all regulatory requirements for the instrument are met