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Testo 420 air flow velocity meter

Producer: TESTO

SKU: TESTO-0563-4200 Category: Gas concentration measuring device

Differential pressure measurement (differential pressure), e.g. to check filters in air conditioning and ventilation systems
Measurement of flow velocity and volume flow using Pitot tube
Handy tool with large display and user-friendly menu guidance
Save measurement data for analysis and reporting

Use the testo 420 air flow meter to carry out simple, effective checks on filters. You can also use the measuring device in combination with a Pitot tube to measure flow velocity and volume flow really easily in ventilation ducts.

The testo 420 air flow meter with air flow hood and Bluetooth connectivity is the precise, convenient solution for measuring air flow at the supply source in HVAC systems. The Testo air flow meter can be folded down for easier transport and on-site measurements.

Testo 420 air flow velocity meter

Overview of the testo 420 anemometer: highly portable

testo 420 allows to measure velocity, flow, absolute pressure, temperature, humidity of wind in office buildings, shopping centers, hospitals (auto zero function ensures high accuracy for pressure measurement)
Clear display of values thanks to large display (with backlight)
Analyze, generate reports on the spot, save and send to email via Bluetooth (using app)
Calculate the average value over points and time
Integrated flow control hood for measuring flow at ceiling outlets, this hood can be removed to measure pressure, flow velocity in the pipeline (just attach optional pitot tube / silicone tube)

testo 420 Includes: main unit, air hood to straighten air flow 610 x 610 mm, 5 straight bars for assembling the air hood, USB connection cable, battery and wheels.

See more details about testo 420 here

Temperature sensor – 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
Response time	45 seconds (t90)

Humidity sensor

Measuring range	0 to 100 %rH
Accuracy	±1.8 %RH + 3 % measured value at +25 °C (5 to 80 %rH)
Resolution	0.1 %rH

Differential pressure sensor

Measuring range	-120 to 120 Pa
Accuracy	±2 % measured value + 0.5 Pa at +22 °C, 1013 hPa
Resolution	0.001 Pa
Response time	1 second (t90)

Absolute pressure sensor

Measuring range	700 to 1100 hPa
Accuracy	±3 hPa
Resolution	0.1 hPa
Response time	1 second

Flow sensor

Measuring range	40 to 4000 m3/h
Accuracy	±3 % measured value + 12 m3/h at +22 °C 1013 hPa (85 to 3500 m3/h)
Response time	1 second (t90)
Resolution	1 m3/h

General specifications

EU-/EG-guidelines	EU-guideline 2014/30/EU
Guarantee	one year
Source	AA battery
Battery life	40 hours
Screen	LCD, backlit
Display	Micro-USB
Internal memory	2 GB

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