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    testo 521-3 - Differential pressure measuring instrument 0 to 2.5 hPa

    0560 5213
  1. Integrated temperature-compensated differential pressure sensor with accuracy of up to ± 0.5 Pa
  2. Calculation of the flow velocity and the volume flow via Pitot tube (optional)
  3. Direct zeroing of the display values of pressure probes
  4. 2 probe inputs for additional pressure and temperature probes
     
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    Using the testo 521-3, even the smallest differential pressures, up to 250 Pa, are measured. High accuracy and a resolution of 0.1 Pa mean the instrument is ideal for differential pressure measurements in clean rooms.
    When used with a pitot tube, the internal pressure sensor measures flow speeds in the range of 0.01 to 3937 fpm.

    testo 521-3 differential pressure measuring instrument, including calibration protocol and batteries

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    12. Temperature - NTC

    Measuring range
    -40° to 302 °F / -40 to +150 °C
    Accuracy
    ±0.7 °F (Remaining Range)* / ±0.4 °C (Remaining Range)*
    ±0.4 °F (14° to 122 °F)* / ±0.2 °C (-10 to +50 °C)*
    Resolution
    0.1 °F / 0.1 °C
    *Accuracy information applies only to instrument without probes connected

    Temperature - Type K TC

    Measuring range
    -328° to 2498 °F / -200 to +1370 °C
    Accuracy
    ±0.7 °F (-148° to 392 °F)* / ±0.4 °C (-100 to +200 °C)*
    ±2 °F (Remaining Range)* / ±1 °C (Remaining Range)*
    Resolution
    0.1 °F / 0.1 °C
    *Accuracy information applies only to instrument without probes connected

    Differential pressure (internal sensor) - Piezoresistive

    Measuring range
    0 to 1.0 InH₂O** / 0 to 2.5 hPa**
    Accuracy
    ±(0.0 InH₂O ±0.5 % of mv) (0.1 to 1 InH₂O) / ±(0.5 Pa ±0.5 % of mv) (20.1 to 250 Pa)
    ±0.0 InH₂O (0 to 0 InH₂O) / ±0.5 Pa (0 to 20 Pa)
    Resolution
    0.1 InH₂O / 0.1 Pa
    Static pressure
    400 InH₂O / 1000 hPa
    Overload
    20 InH₂O / 50 hPa
    Zeroing
    to 0.2 InH₂O / to 0.5 hPa
    **Sensor is not suitable for long-term measurements

    Differential pressure probes

  12. Differential pressure probes
    Precision pressure probe, 100 Pa, measures differential pressure and velocity (with Pitot tube)
      :
      0638 1347
    • Differential pressure probes
      Drucksonde-0638-1347-neutral
      Meas.Range 0 to + 14.5 psi
        :
        0638 1647

        • Pitot tubes

      • Pitot tubes
        Staurohr
        Pitot tube, stainless steel, 19.7 in.
          :
          0635 2045
          $ 199.75
          1
        • Pitot tubes
          Staurohr
          Pitot tube, stainless steel, 13.8 in.
            :
            0635 2145
            $ 174.25
            1

            • Pressure Probe Accessories

          • Pressure Probe Accessories
            0638 1847_absolute-pressure-probe
            Pressure probe, 29 psi, measures absolute pressure
              :
              0638 1847

              • Relative pressure probe

            • Relative pressure probe
              low-pressure-high-pressure-probe
              Low pressure probe, refrigerant-proof stainless steel, without cable
                :
                0638 1741
                $ 814.00
                1
              • Relative pressure probe
                low-pressure-high-pressure-probe
                High pressure probe, refrigerant-proof stainless steel, up to 435 psi, without cable
                  :
                  0638 1841

                  • Temperature probes

                • Temperature probes
                  Super quick-action immersion/penetration probe for measurements in liquids
                    :
                    0604 0493

                    • Accessories for probes

                  • Accessories for probes
                    Connection cable for pressure probes 0638 1740, 0638 1840, 0638 1940
                      :
                      0409 0202
                      $ 182.00
                      1
                    • Accessories for probes
                      Connection cable
                      Connection cable.
                        :
                        0430 0143
                      • Accessories for probes
                        Connection hose, silicone
                        Connection hose, silicone, 16.4 ft, load up to 281 inH₂O
                          :
                          0554 0440
                          $ 67.15
                          1
                        • Accessories for probes
                          No picture available
                          Connection hose set, 6.5 x 3.2 ft., coiled, incl. 1/8" screw connection
                            :
                            0554 0441
                          • Accessories for probes
                            Adapter to connect NiCr-Ni thermocouples and probes with open wire ends
                              :
                              0600 1693

                              • Additional accessories and Spare parts

                            • Additional accessories and Spare parts
                              9V rech. battery for instrument
                              9V rechargeable battery for instrument
                                :
                                0515 0025
                              • Additional accessories and Spare parts
                                Desk-top power supply
                                Power supply for compact gas drier and flue gas analyzer
                                  :
                                  0554 1143
                                  $ 182.00
                                  1

                                  • Printer and accessories

                                • Printer and accessories
                                  testo-Schnelldrucker IRDA mit kabelloser Infrarot-Schnittstelle
                                  Compact printer, with IRDA technology offers fast, easy to read printouts of measurements at every job site.  Internal magnets will hold the printer to magnetic surfaces for hands free operation. *Compatible with any Testo device capable of IR or IRDA
                                    :
                                    0554 0549
                                    $ 356.15
                                    1
                                  • Printer and accessories
                                    Spare thermal paper
                                    Spare thermal paper, permanent ink
                                      :
                                      0554 0568
                                      $ 39.10
                                      1
                                    • Printer and accessories
                                      External fast charger
                                      External recharger incld. 4 Ni-NMH rechargeable batteries with built-in international power supply - 100-240 V, 300 MA, 50/60 Hz, 12 VA/instrument
                                        :
                                        0554 0610

                                        • Software and Accessories

                                      • Software and Accessories
                                        RS232 cable
                                          :
                                          0409 0178
                                          $ 104.00

                                          • Transport Case

                                        • Transport Case
                                          TopSafe
                                          TopSafe (protective case)
                                            :
                                            0516 0446