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    testo 420 - Differential pressure manometer

    0560 0420
    testo 420
    testo 420
    testo 420
    testo 420
    1
  1. Differential pressure measurement, useful for checking filters in air conditioning and ventilation systems
  2. Calculate flow velocity and volume flow using an optional pitot tube
  3. Live data feed integration now available with the MeasureQuick App
  4. Match with a Testo CEC compliant air flow capture hood to measure volume flows at supplies and returns (0563 4200)
    5. 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
    The CEC compliant testo 420 differential pressure measuring instrument is suitable for accurate differential pressure measurement up to 120 Pa, suitable for checking filters in HVAC systems. The testo 420 calculates flow velocity and volume flow. This instrument can also be used for absolute pressure measurement.
     

    Differential Pressure Measuring Instrument with Practical Functions

     
    You can use a pitot tube and compatible connection hoses (both optional) to measure the flow velocity and volume flow in ventilation ducts. Timed and multi-point mean calculation, as well as the combination of the two, together with simple input of the duct geometry, provide you with accurate flow measurements in ducts.

    Automatic zeroing ensures higher accuracy for low pressures. All measuring values are easy to read on the large backlit display.
     

    Documenting the Measurement Data

     
    Measurement data can be stored in the testo 420 for analysis and documentation. It's easy to manage the measurement data on a PC without any additional software, via the testo 420's plug and play capability.

    testo 420 differential pressure measuring instrument, batteries, and certificate of calibration

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    :
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    8. 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
    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 InHâ‚‚O / 0.001 Pa
    0.01 fpm / 0.01 m/s
    Reaction time
    1 sec (t90)

    Absolute Pressure

    Measuring range
    280 to 440 InHâ‚‚O / 700 to 1100 hPa
    Accuracy
    ±1 InH₂O / ±3 hPa
    Resolution
    0.1 InHâ‚‚O / 0.1 hPa
    Reaction time
    1 sec

    General technical data

    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

    Accessories

  8. Accessories
    Air flow velocity matrix
    Air flow grid – for supply air diffusers 
      :
      8721 0025
      $ 726.75
      1

      • Additional accessories and Spare parts

    • Additional accessories and Spare parts
      Connection hose, silicone
      Connection hose, silicone, 16.4 ft, load up to 281 inHâ‚‚O
        :
        0554 0440
        $ 69.70
        1
      • Additional accessories and Spare parts
        Connection hose
        Connection hose, silicone-free, 16.4 ft, load up to 281 inHâ‚‚O
          :
          0554 0453
          $ 83.00
          1
        • Additional accessories and Spare parts
          Staurohr
          Pitot tube, stainless steel, 19.7 in.
            :
            0635 2045
            $ 206.55
            1