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testo 445 - climate measuring instrument

0560 4450
  • Multi-function climate measuring instrument: measure up to 6 measurement parameters at the same time
  • Internal reading memory for up to 3,000 readings
  • Automatic allocation of the duct cross-section to the measuring location (max. 99 measuring locations)
  • Automatic mean value calculation and determination of the volume flow
  • You can keep a close eye on indoor air quality with the testo 445 climate measuring instrument: the allrounder can measure up to 6 parameters (with the appropriate probe), which can help you make a professional assessment of indoor air quality. The climate measuring instrument therefore supports you in adjusting and checking ventilation and air conditioning systems.
    Ventilation and air conditioning systems are used more and more frequently to ensure user independent fresh air supply and thermal comfort in buildings. The testo 445 climate measuring instrument helps you check the system is functioning properly and operating efficiently. This is because the measuring instrument can determine all the relevant measurement parameters for you.

    testo 445 climate measuring instrument: an overview of the advantages

    The testo 445 climate measuring instrument has two inputs for connecting external probes (which can be ordered separately). At Testo, you have a large selection of suitable probes for the testo 445 climate measuring instrument. Depending on which probe you decide on, you can determine the following parameters:
    • Air velocity (in ventilation ducts, at duct outlets and on extractors)
    • Volume flow
    • Temperature
    • Relative air humidity
    • Dew point
    • Absolute humidity
    • Degree of humidity
    • Enthalpy
    • Pressure
    • CO in indoor air
    Further practical features of the climate measuring instrument: its internal memory records up to 3,000 readings. The automatic allocation of the duct cross-section is also particularly useful. This means you can save the measurement data so that it is linked to the measuring location (up to 99 measuring locations). The mean value, the last measured value and the min./max. values can be displayed simply by pressing a key.

    As optional accessories for the climate measuring instrument, we recommend you get the testo fast printer to print data out directly at the measuring location and the ComSoft software for convenient data analysis on the PC.

    testo 445 climate measuring instrument, including battery and calibration protocol.

    General technical data

    Weight
    255 g
    Dimensions
    215 x 68 x 47 mm
    Operating temperature
    0 to +50 °C
    Product-/housing material
    ABS
    Battery type
    9V block battery, 6F22
    Battery life
    45 h
    Display type
    LCD (Liquid Crystal Display)
    Display size
    4 lines
    Data transfer
    RS232
    Memory
    3,000 measuring values
    Storage temperature
    -20 to +70 °C

    Temperature - NTC

    Measuring range
    -50 to +150 °C
    Accuracy
    ±0.4 °C (-50 to -25.1 °C)
    ±0.4 °C (+75 to +99.9 °C)
    ±0.2 °C (-25 to +74.9 °C)
    ±0.5 % of mv (+100 to +150 °C)
    Resolution
    0.1 °C (-50 to +150 °C)

    Humidity probes

  • Humidity probes
    No picture available
    Humidity/temperature probe
      :
      0636 9742
    • Probes

    • Probes
      Spare meas. head for pipe wrap probe, TC Type K
      Spare measuring head for pipe wrap probes (TC type K) - Measuring range: -60 to +130°C
        :
        0602 0092
      • Probes
        Super quick-action immersion/penetration probe for measurements in liquids
          :
          0604 0493
        • Probes
          Super quick-action immersion/penetration probe
          Super quick-action immersion/penetration probe for measurements in gases and liquids with a low-mass tip
            :
            0604 9794
          • Probes
            Vane probe, Ø 16 mm, with telescopic handle, Tmax +60°C
            Vane probe, Ø 16 mm, with telescopic handle, Tmax +60°C
              :
              0628 0005
            • Probes
              Comfort level probe for measuring degree of turbulence
              Comfort level probe for measuring degree of turbulence, with telescopic handle and stand. Fulfills EN 13779 requirements
                :
                0628 0009
              • Probes
                Robust temperature humidity probe high temperature 0628 0021
                Robust high-temperature/humidity probe – suitable for measurements at high temperatures up to 180 °C
                  :
                  0628 0021
                • Probes
                  Flexibler, nicht formstabiler Feuchtefühler
                  Flexible humidity probe (does not retain shape) for measurements in inaccessible places
                    :
                    0628 0022
                  • Probes
                    Hot ball probe (Ø 3 mm) - for flow and temperature
                    Hot ball probe (Ø 3 mm) for measuring flow and temperature in ventilation ducts or at air outlets – flow measuring range: 0 to +10 m/s 
                      :
                      0635 1049
                    • Probes
                      Dreifachsonde zur gleichzeitigen Messung
                      Hot ball probe (Ø 7.5 mm) for measuring flow, temperature and humidity in ventilation ducts – flow measuring range: 0 to +10 m/s 
                        :
                        0635 1540
                      • Probes
                        Preisgünstige, robuste Hitzkugelsonde, ~ 3 mm, für Messungen...
                        Affordable, robust hot bulb probe, Ø 3 mm, for measurements in the lower velocity range, with handle
                          :
                          0635 1549
                        • Probes
                          Staurohr
                          Stainless steel Pitot tube, length 500 mm, Ø 7 mm - for measuring flow velocity
                            :
                            0635 2045
                          • Probes
                            Staurohr
                            Stainless steel Pitot tube, length 350 mm, Ø 7 mm - for measuring flow velocity
                              :
                              0635 2145
                            • Probes
                              Staurohr
                              Stainless steel Pitot tube, length 1000 mm, Ø 7 mm - for measuring flow velocity
                                :
                                0635 2345
                              • Probes
                                Hochtemperatur-Flügelrad-Messsonde, ~ 25 mm
                                Vane probe (Ø 25 mm) for flow measurements in ventilation ducts, can also be used at high temperatures – measuring range: +0.6 to +20 m/s
                                  :
                                  0635 6045
                                • Probes
                                  Flügelrad-/Temperatur-Messsonde, ~ 25 mm

                                  Vane probe (Ø 25 mm) for flow measurements in ventilation ducts – measuring range: +0.6 to +40 m/s
                                    :
                                    0635 9640
                                  • Probes
                                    No picture available
                                    Thin humidity probe incl. 4 attachable protection caps for ambient air measurements, measurements in exhaust air ducts and equilibrium moisture measurements
                                      :
                                      0636 2130
                                    • Probes
                                      Robust humidtiy probe
                                      High humidity level probe w/ heated sensor element, no humidity on sensor
                                        :
                                        0636 2142
                                      • Probes
                                        Standard-Raumklimafühler bis +70 °C
                                        Standard humidity/temperature probe (Ø 21 mm) for fast assessment of the indoor air climate
                                          :
                                          0636 9740
                                        • Probes
                                          Drucktaupunktfühler zur Messung in Druckluftsystemen
                                          Standard pressure dewpoint probe for measurements in compressed air systems
                                            :
                                            0636 9840
                                          • Probes
                                            Precision pressure dew point probe
                                            Precision pressure dew point probe with measuring chamber – pressure dew point measuring range: -40 to +50 °C tpd
                                              :
                                              0636 9841
                                            • Probes
                                              Drucksonde, 10 hPa
                                              Precision pressure probe, 100 Pa, measures differential pressure and velocities (in combination with Pitot tube)
                                                :
                                                0638 1345
                                              • Probes
                                                Drucksonde, 10 hPa
                                                Pressure probe for determining differential pressure and flow velocity (with a Pitot tube), measuring range: 0 to +10 hPa
                                                  :
                                                  0638 1445
                                                • Probes
                                                  Drucksonde, 100 hPa
                                                  Pressure probe for determining differential pressure and flow velocity (with a Pitot tube), measuring range: 0 to +100 hPa
                                                    :
                                                    0638 1545
                                                  • Probes
                                                    Pressure probe, 2000 hPa
                                                    Pressure probe, 2000 hPa, measures absolute pressure
                                                      :
                                                      0638 1645
                                                    • Thermal probes

                                                      Type K (NiCr-Ni) probes

                                                      Vane

                                                      Accessories for temperature probes

                                                    • Accessories for temperature probes
                                                      Silicone heat paste
                                                      Silicone heat paste (14g), Tmax = +260°C
                                                        :
                                                        0554 0004
                                                      • Accessories for velocity probes, pressure probes

                                                      • Accessories for velocity probes, pressure probes
                                                        Handle for plug-in vane probes
                                                          :
                                                          0430 3545
                                                        • Accessories for velocity probes, pressure probes
                                                          Connection hose, silicone
                                                          Connection hose, silicone - max. load capacity up to 700 hPa (mbar)
                                                            :
                                                            0554 0440
                                                          • Accessories: Humidity probes

                                                          • Accessories: Humidity probes
                                                            Extension cable
                                                            Extension cable
                                                              :
                                                              0409 0063
                                                            • Accessories: Humidity probes
                                                              Connection cable
                                                              Connection cable
                                                                :
                                                                0430 0143
                                                              • Accessories: Humidity probes
                                                                saline solution pot
                                                                testo saline solution pot for checking humidity probes, 33 %RH
                                                                  :
                                                                  0554 0636
                                                                • Accessories: Humidity probes
                                                                  Control and adjustment set for Testo humidity probes
                                                                  Control and calibration kit for Testo humidity probes
                                                                    :
                                                                    0554 0660
                                                                  • Caps for humidity probes

                                                                  • Caps for humidity probes
                                                                    Edelstahl-Sinterkappe, Ø 21 mm
                                                                    Stainless steel sintered cap, Ø 21 mm, can be screwed onto humidity probe
                                                                      :
                                                                      0554 0640
                                                                    • Caps for humidity probes
                                                                      Sintered stainless steel filter
                                                                        :
                                                                        0554 0641
                                                                      • Caps for humidity probes
                                                                        PTFE sintered filter, Ø 21 mm, for corrosive substances
                                                                        PTFE sintered filter, Ø 21 mm, for corrosive substances
                                                                          :
                                                                          0554 0666
                                                                        • Caps for humidity probes
                                                                          Metal protection cap
                                                                            :
                                                                            0554 0755
                                                                          • Caps for humidity probes
                                                                            Sintered PTFE filter,
                                                                            Sintered PTFE filter, Ø 12 mm, for corrosive media
                                                                              :
                                                                              0554 0756
                                                                            • Caps for humidity probes
                                                                              Wire mesh filter
                                                                                :
                                                                                0554 0757
                                                                              • Caps for humidity probes
                                                                                PTFE sintered filter
                                                                                  :
                                                                                  0554 0758
                                                                                • Certificates

                                                                                  Printer and accessories

                                                                                • Printer and accessories
                                                                                  testo-Schnelldrucker IRDA mit kabelloser Infrarot-Schnittstelle
                                                                                  testo fast printer IRDA
                                                                                    :
                                                                                    0554 0549
                                                                                  • Printer and accessories
                                                                                    Spare thermal paper
                                                                                    Spare thermal paper for printer, permanent
                                                                                      :
                                                                                      0554 0568
                                                                                    • Software and Accessories

                                                                                      Transport and Protection