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testo 521-1 - differential pressure measuring instrument (0.2 % of f.v.)

0560 5210
€ 850,00 € 1062,50
  • Integrated differential pressure sensor with an accuracy of 0.2 % of f.v.
  • Calculation of the flow velocity and the volume flow via Pitot tube (optional)
  • Multi-point and timed mean calculation
  • 2 probe inputs for additional pressure and temperature probes
  • The high-precision testo 521-1 differential pressure measuring instrument is ideal for accurate differential pressure measurements in air conditioning and ventilation technology, for instance for pressure drop on filters, checking fans and extractors or for Pitot tube measurements.
    The testo 521-1 differential pressure measuring instrument is targeted at precise differential pressure measurements in air conditioning and ventilation technology. It is excellent for use in measuring the pressure drop on filters and in checking fans and extractors. The measuring instrument is also suitable for Pitot tube measurements in ventilation ducts or in process air (in the 5 to 100 m/s range).

    The differential pressure measuring instrument has an integrated temperature-compensated differential pressure sensor which measures with an accuracy of 0.2 % of f.v. In addition, you can attach up to 2 further optional probes to the measuring instrument. This means you can flexibly adapt the differential pressure measuring instrument to your application. You have the choice of the following probes:
    • Differential pressure probes
    •  Absolute pressure probes
    • Relative pressure probes
    • Temperature probes (e.g. surface probes or immersion and penetration probes)

    The practical features of the testo 521-1 differential pressure measuring instrument

    The integrated differential pressure sensor enables the testo 521-1 measuring instrument to calculate flow velocity and volume flow using a Pitot tube (which can be ordered separately). The differential pressure measuring instrument also offers timed and multi-point mean calculation.

    Furthermore, long-term monitoring is possible: in doing this, measurement data can be saved individually or as a series of measurements. The measurement rate and the number of values to be saved can be selected by the user. Dynamic measurements can be saved in the measuring instrument in the measuring cycle of 0.04 seconds.

    The optional ComSoft software enables you to carry out online measurements via your PC, save the measurement data so that it is linked to the measuring location and analyze it on the PC. You can use the optional testo fast printer to print measurement data out directly at the measuring location.

    You can choose between the following units for pressure measurement: mbar, hPa, bar, Pa, kPa, inH2O, mmH2O, torr and psi. The mean value, the last measured value and the min./max. values can be displayed simply by pressing a key.

    testo 521-1 differential pressure measuring instrument, including calibration protocol and batteries.

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    testo 440 dP Air velocity and IAQ measuring instrument including differential pressure sensor
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    • Intuitive: clearly structured measurement menus for volume flow, K-factor, degree of turbulence, cooling/heating output, mould detection and long-term measurement, such as CO₂
    • Wireless: Bluetooth® probes for extra convenience when measuring and less cable clutter in the measuring case (please order probes separately)
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    testo 440 Delta P Air Flow ComboKit 2 with Bluetooth®
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    • Intuitive: clearly structured measurement menu for volume flow and parallel determination of air velocity, differential pressure, humidity and temperature in ventilation ducts, at ventilation outlets and in work rooms
    • Space-saving: combine the universal Bluetooth handle with the humidity/temperature probe head or extendable telescope (1.0 m). Vane probe heads (Ø 16 mm, Ø 100 mm) can simply be plugged onto the telescope
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    testo 440 Delta P Air Flow ComboKit 1 with Bluetooth®
    testo 440 delta P Air Flow ComboKit 1 with Bluetooth®
    • Intuitive: clearly structured measurement menu for volume flow and parallel determination of air velocity, differential pressure, humidity and temperature in ventilation ducts or at ventilation outlets
    • Space-saving: simply combine the universal Bluetooth handle with the 100 mm vane or hot wire probe head and the extendable telescope (1.0 m)
    :
    0563 4409
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    testo 400 Universal IAQ instrument
    testo 400 - Universal IAQ instrument
    • Smart, intuitive measurement programs including HVAC grid measurement as per EN ISO 12599 and ASHRAE 111, PMV/PPD and turbulence as per EN ISO 7730 and ASHRAE 55
    • High-precision, location-independent and integrated differential pressure sensor
    :
    0560 0400
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    testo 400 air flow kit with hot wire probe
    testo 400 air flow kit with hot wire probe
    • Standard-compliant determination of the volume flow in ducts using grid measurements as per EN ISO 12599 and ASHRAE 111
    • Determination of the volume flow at outlets by measuring the reference pressure and entering the manufacturer-specific K-factor
    :
    0563 0400 71
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    testo 400 air flow kit with 16 mm vane probe
    testo 400 air flow kit with 16 mm vane probe
    • Standard-compliant determination of the volume flow in ducts using grid measurements as per EN ISO 12599 and ASHRAE 111
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    :
    0563 0400 72
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    testo 512-1
    testo 512-1 - Digitalni instrument za mjerenje diferencijalnog tlaka s mogućnošću spajanja na aplikaciju
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    :
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  • Temperature - NTC

    Measuring range
    -40 to +150 °C
    Accuracy
    ±0,2 °C (-10 to +50 °C)*
    ±0,4 °C (Remaining Range)*
    Resolution
    0,1 °C
    *Accuracy information applies only to instrument without probes connected

    Temperature - TC Type K (NiCr-Ni)

    Measuring range
    -200 to +1370 °C
    Accuracy
    ±1 °C Remaining Range*
    ±0,4 °C (-100 to +200 °C)*
    Resolution
    0,1 °C
    *Accuracy information applies only to instrument without probes connected

    Differential pressure (internal sensor) - Piezoresistive

    Measuring range
    0 to 100 hPa
    Accuracy
    ±0,2 % of fsv
    Resolution
    0,01 hPa
    Static pressure
    1000 hPa (abs)
    Overload
    300 hPa
    Zeroing
    to 2,5 hPa

    Additional accessories and Spare parts

  • Additional accessories and Spare parts
    Connection hose, silicone
    Connection hose, silicone - max. load capacity up to 700 hPa (mbar)
      :
      0554 0440
      € 47,00 € 58,75