Product Description
testo 420 - Differential pressure manometer
Description
Differential Pressure Measuring Instrument with Practical Functions
Automatic zeroing ensures higher accuracy for low pressures. All measuring values are easy to read on the large backlit display.
Documenting the Measurement Data
Delivery Scope
testo 420 differential pressure measuring instrument, batteries, and certificate of calibration
Your advantages
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Differential pressure measurement, useful for checking filters in air conditioning and ventilation systems
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Calculate flow velocity and volume flow using an optional pitot tube
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Live data feed integration now available with the MeasureQuick App
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Match with a Testo CEC compliant air flow capture hood to measure volume flows at supplies and returns (0563 4200)
Use the CEC compliant testo 420 differential pressure measuring instrument to carry out simple, efficient tests on filters. You can also use this instrument in conjunction with a pitot tube to easily measure flow velocity and volume flow in ventilation ducts
Technical data
Differential Pressure
Measuring range |
-0.480 to 0.480 InHâ‚‚O / -120 to +120 Pa
+19.7 to +2756 fpm / +0.1 to +14 m/s
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Accuracy |
±2 % of mv + 0.002 InHâ‚‚O at +72 °F, 405 InHâ‚‚O / ±2 % of mv + 0.5 Pa at +22 °C, 1013 hPa
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Resolution |
0.001 InHâ‚‚O / 0.001 Pa
0.01 fpm / 0.01 m/s
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Reaction time |
1 sec (t90)
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Absolute Pressure
Measuring range |
280 to 440 InHâ‚‚O / 700 to 1100 hPa
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Accuracy |
±1 InHâ‚‚O / ±3 hPa
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Resolution |
0.1 InHâ‚‚O / 0.1 hPa
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Reaction time |
1 sec
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General technical data
Dimensions |
6 x 3 x 1 in. / 150 x 85 x 35 mm
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Operating temperature |
23° to 122 °F / -5 to +50 °C
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EU-/EG-guidelines |
EU-guideline 2014/30/EU
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Battery type |
Alkaline, type AA
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Battery life |
40 h
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Display size |
3.5"
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Display function |
Dot matrix
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Display ligthing |
with illumination
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Interface |
Micro-USB
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Memory |
2 GB (internal)
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Storage temperature |
-4° to 140 °F / -20 to +60 °C
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Downloads
Product brochures
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testo 420 Data Sheet(pdf, 2.32 MB)
Operating instructions
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EU declaration of conformity testo 420(pdf, 33.79 kB)
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Instruction manual testo 420 (differential pressure instrument)(pdf, 356.28 kB)