logo
  1. Home
  2. testo 440

testo 440 - Air velocity and IAQ measuring instrument

0560 4401
Volume flow measurement in ducts with the air velocity and IAQ measuring instrument testo 440
Volume flow measurement at outlets with the air velocity and IAQ measuring instrument testo 440
Measuring indoor air quality and comfort level using the air velocity and iaq measuring instrument testo 440
  • A measuring instrument for all climate-related parameters
  • Extendible with a wide range of probes
  • Wireless measurement with Bluetooth probes
  • USB interface for exporting measurement reports as CSV files
  • Intuitive measurement menus
  • Graphic display with parallel display of 3 readings
  • Precise, reliable measurement of all air velocity and IAQ parameters with just one measuring instrument – the testo 440. This multifunction measuring instrument is intuitive and easy to use, thanks to its clearly structured measurement menus. Adjusting air conditioning and ventilation systems, monitoring air quality, and carrying out comfort level measurements are all possible without the hassle of juggling different devices and tools. Enjoy the versatility of using your choice of high quality digital probes with just one measuring instrument.
    • SmartProbes-testo-440-overview-2000x1500.jpg

      A measuring instrument for all climate-related parameters

    Use the testo 440 air velocity and IAQ measuring instrument in combination with high quality probes to measure and store all air velocity and IAQ parameters. Up to 3 probes can be connected simultaneously – a Bluetooth probe, a wired probe, and a temperature probe with a type K thermocouple connector (probes sold separately). Automatic probe detection and clearly structured measurement menus guarantee simple operation and will make your day-to-day work easier.

     

    Measure in no time with the testo 440 multifunction measuring instrument

    Carry out your measurements quickly and easily. This multifunction instrument automatically detects each connected probe, which means you won't need to manually reset measurement parameters when changing probes. Clearly structured measurement menus for measuring the volume flow in ducts and at outlets, funnel measurement, measuring the degree of turbulence, determining heating/cooling output, mold detection, and long-term measurement provide you with the optimal support for quick and efficient work.

     

    A wireless space saver: More applications, less equipment

    Endlessly versatile – the universal probe handle can be connected to all probe heads, so you can measure everything you need, while saving money and space.

    The Bluetooth probe handle makes it more convenient to carry out your measurements, and guarantees less cable clutter in your case. It makes it possible to carry out measurements without any bothersome cable connections, and it transfers readings up to a distance of 65 feet. If using a wireless connection is not possible, use the cable probe handle as a practical alternative.

     

    Practical measurement data management

    The testo 440 stores up to 7,500 measurement protocols, which can be read via USB port and further processed as a CSV file on your computer (e.g. with Excel). With the testo Bluetooth / IrDA printer (sold separately), you have the ability to produce a printed report of measurement data directly on site.

     

    Intelligent calibration concept for maximum precision

    You can rely on the accuracy of your measurement results with our digital probes, because the testo 440 makes measurement uncertainty a thing of the past. You only need to send the probes in for calibration, meaning the multifunction instrument can remain in continuous use with a variety of interchangeable probes.

     

     

    Advantages of measuring with the testo 440 air velocity and IAQ measuring instrument

    Precise and reliable in ducts and at air outlets
     
    • Large range of connectable probes: Hot wire and vane probe (Ø 0.6") for measurements in ducts, large vane probes (Ø 4") for measurements at air/ceiling outlets
    • Calculate volume flow quickly: In the measurement menu, simply configure the dimensions and geometry of the duct cross-section and see the volume flow displayed straight away
    • Easy to carry out measurements in larger ducts, due to the extendable telescope on the hot wire and vane probes (Ø 0.6"), up to a total length of about 6.5 feet
    • Carry out measurements at air/ceiling outlets effortlessly, without using a ladder – fit the vane probe (Ø 4") with the extendable telescope and 90° angle (both sold separately)
    • Use the vane probes in conjunction with the testovent measurement funnels and flow straighteners to test incoming / outgoing air at plate outlets, ventilation grills, and swirl outlets
    • Practical Bluetooth interface: Use the air velocity probes to measure without having to deal with any bothersome cables, operate the measuring instrument by pressing the button on the handle of the probe, e.g. to start or stop a timed mean calculation
    • Use the practical rear magnets to securely attach the multifunction measuring instrument to metal surfaces (e.g. ventilation ducts)
     
    Long-term monitoring of indoor air quality
     
    • The right probe for your requirements: Probes for CO2, CO, and air temperature and humidity are available as wired or Bluetooth variants
    • Easy to use: Enter the measurement period and interval for long-term measurement, and track it over the course of the day
    • Internal memory for up to 7,500 measurement protocols
     
    Turbulence measurement in accordance with EN ISO 7730 / ASHRAE 55
     
    • Attain a high level of accuracy, even at low air velocities, with a turbulence probe
    • Automatic calculation of draft risk and degree of turbulence in accordance with EN ISO 7730 / ASHRAE 55
    • For convenient measurements at varying heights, we recommend using our measuring tripod for comfort level measurement – this makes it easy to position turbulence probes in compliance with testing standards
     
    Wide range of probes for laboratories and cleanrooms
     
    • Fume hood probe for high precision air velocity measurements
    • Thanks to its low startup speed of 0.1 m/s, the available vane probe (Ø 4") is ideal for laminar flow measurements in cleanrooms, available as a wired or Bluetooth variant
    • High precision temperature / humidity probe (0636 9771 or 0636 9772) with an accuracy of ±0.6% RH + 0.7% of m.v. in the 0-90% RH range for measuring the humidity in cleanrooms

    testo 440 air velocity and IAQ measuring instrument, 3 AA batteries, USB cable, and calibration protocol

    Temperature - NTC

    Measuring range
    -40° to 302 °F / -40 to +150 °C
    Accuracy
    ±0.5 % of mv (Remaining Range)
    ±0.7 °F (167° to 211.8 °F) / ±0.4 °C (+75 to +99.9 °C)
    ±0.5 °F (-13° to 166.8 °F) / ±0.3 °C (-25 to +74.9 °C)
    ±0.7 °F (-40° to -13.2 °F) / ±0.4 °C (-40 to -25.1 °C)
    Resolution
    0.1 °F / 0.1 °C

    Temperature - Type K TC

    Measuring range
    -328.0° to 2498.0 °F / -200 to +1370 °C
    Accuracy
    ±(0.5 °F + 0.3 % of mv) / ±(0.3 °C + 0.3 % of mv)
    Resolution
    0.1 °F / 0.1 °C

    General technical data

    Weight
    8.8 oz. / 250 g
    Dimensions
    6.1 x 2.6 x 1.3 in. / 154 x 65 x 32 mm
    Operating temperature
    -4.0° to 122.0 °F / -20 to +50 °C
    Connectable probes
    1 x digital probe with cable or 1 x Temperature NTC TUC, 1 x digital Bluetooth probe or testo Smart Probe, 1 x Temperature TC Type K
    Product colour
    black/orange
    Battery type
    3 x AA 1.5 V
    Battery life
    12 h (typically vane measurement)
    Interface
    Bluetooth®; USB
    Storage temperature
    -4.0° to 122.0 °F / -20 to +50 °C

    Comfort probes

  • Comfort probes
    Turbulence probe (digital), wired
    Turbulence probe (digital), wired: for determining the degree of turbulence and draught risk according to EN ISO 7730 / ASHRAE 55 – measuring range 0 to +5 m/s, 0 to +50 °C
      :
      0628 0152
    • Comfort probes
      Lux probe (digital) for measuring illuminance, wired
      Lux probe (digital), wired: for measuring illuminance in workplaces (e.g. offices, production areas) – measuring range 0 to 100,000 lux
        :
        0635 0551
      • Comfort probes
        CO2 probe (digital) with Bluetooth® including temperature and humidity sensor
        CO₂ probe (digital) with Bluetooth® including temperature and humidity sensor: for measuring the indoor air quality in offices, production areas or storage facilities – measuring range 0 to 10,000 ppm, -10 to +50 °C, 5 to 95% RH
          :
          0632 1551
        • Comfort probes
          CO2 probe (digital) including temperature and humidity sensor, wired
          CO₂ probe (digital) including temperature and humidity sensor, wired: for measuring the indoor air quality in offices, production areas or storage facilities – measuring range 0 to 10,000 ppm, -10 to +50 °C, 5 to 95% RH
            :
            0632 1552
          • Comfort probes
            CO2 probe head including temperature and humidity sensor
            CO₂ probe head including temperature and humidity sensor: for attachment to universal Bluetooth® or cable handle – measuring range 0 to 10,000 ppm, -10 to +50 °C, 5 to 95% RH
              :
              0632 1550
            • Comfort probes
              CO probe (digital) with Bluetooth®
              CO probe (digital) with Bluetooth®: for measuring carbon monoxide in indoor areas (e.g. boiler rooms) – measuring range 0 to 500 ppm
                :
                0632 1271
              • Comfort probes
                CO probe (digital), wired
                CO probe (digital), wired: for measuring carbon monoxide in indoor areas (e.g. boiler rooms) – measuring range 0 to 500 ppm
                  :
                  0632 1272
                • Comfort probes
                  CO probe head
                  CO probe head: for attachment to universal Bluetooth® or cable handle – measuring range 0 to 500 ppm
                    :
                    0632 1270
                  • Comfort probes
                    Globe-Thermometer ~ 150 mm, TE Typ K, zum Messen der Strahlung
                    Globe probe Ø 5.9"
                      :
                      0602 0743
                    • Humidity probes

                    • Humidity probes
                      Humidity/temperature probe (digital) with Bluetooth®
                      Humidity/temperature probe (digital) with Bluetooth®: for measurements in rooms, ventilation ducts, refrigeration systems and heat pumps – accuracy ±2% RH / ±0.5 °C, measuring range 0 to 100% RH / -20 to +70 °C
                       
                        :
                        0636 9731
                      • Humidity probes
                        Humidity/temperature probe (digital), wired
                        Humidity/temperature probe (digital), wired: for measurements in rooms, ventilation ducts, refrigeration systems and heat pumps – accuracy ±2% RH / ±0.5 °C, measuring range 0 to 100% RH / -20 to +70 °C
                         
                          :
                          0636 9732
                        • Humidity probes
                          Humidity/temperature probe head
                          Humidity/temperature probe head: for attachment to universal Bluetooth® or cable handle – accuracy ±2% RH / ±0.5 °C, measuring range 0 to 100% RH / -20 to +70 °C
                            :
                            0636 9730
                          • Humidity probes
                            High-precision humidity/temperature probe (digital) with Bluetooth®
                            High-precision humidity/temperature probe (digital) with Bluetooth®: for measurements in cleanrooms and laboratories, and critical processes in the pharmaceutical, industrial and food sectors, as well as in storage, refrigerated and work rooms or in air conditioning/ventilation ducts - accuracy: ±(0.6% RH + 0.7 % of m.v.) (0 to 90% RH) / ±0.3 °C (+15 to +30 °C)
                              :
                              0636 9771
                            • Humidity probes
                              High-precision humidity/temperature probe (digital), wired
                              High-precision humidity/temperature probe (digital), wired: for measurements in cleanrooms and laboratories, and critical processes in the pharmaceutical, industrial and food sectors, as well as in storage, refrigerated and work rooms or in air conditioning/ventilation ducts - accuracy: ±(0.6% RH + 0.7 % of m.v.) (0 to 90% RH) / ±0.3 °C (+15 to +30 °C)
                               
                                :
                                0636 9772
                              • Humidity probes
                                High-precision humidity/temperature probe head: for attachment to a universal Bluetooth® or cable handle – accuracy: ±(0.6% RH + 0.7 % of m.v.) (0 to 90% RH) / ±0.3 °C (+15 to +30 °C)
                                  :
                                  0636 9770
                                • Humidity probes
                                  Robust humidity/temperature probe (digital) - for temperatures up to +180 °C, wired
                                  Robust humidity/temperature probe (digital) for temperatures up to +180 °C, wired: for measurements in industrial exhaust air, in bulk materials and in climatic test cabinets – accuracy ±2% RH (2.1 to 98% RH) / ±0.4 °C (0.1 to +50 °C), measuring range 0 to 100% RH / -20 to +180 °C
                                   
                                    :
                                    0636 9775
                                  • Humidity probes
                                    testo 605i
                                      :
                                      0560 2605 03
                                    • Pressure Probe

                                      Temperature probes

                                    • Temperature probes
                                      testo 805i
                                      testo 805i – infrared thermometer with smartphone operation
                                        :
                                        0560 1805
                                        $ 136.00
                                        1
                                      • Temperature probes
                                        Waterproof immersion/penetration probe with NTC temperature sensor
                                        Waterproof immersion/penetration probe (NTC temperature sensor) for temperature measurements in liquids and semi-solid media – measuring range -50 to +150 °C, accuracy ±0.2 °C (-25 to +74.9 °C)
                                          :
                                          0615 1212
                                        • Temperature probes
                                          Robust air probe with NTC temperature sensor
                                          Robust air probe (NTC temperature sensor) with a short response time, for measuring air temperature – measuring range -50 to +125 °C, accuracy ±0.2 °C (-25 to +80 °C)
                                            :
                                            0615 1712
                                          • Temperature probes
                                            Clamp probe with NTC temperature sensor for measurements on pipes (Ø 6-35 mm)
                                            Clamp probe (NTC temperature sensor) for measuring the surface temperature of pipes (Ø 6-35 mm) – measuring range -40 to +125 °C
                                              :
                                              0615 5505
                                            • Temperature probes
                                              Robuster Luftfühler, TE Typ K
                                                Rugged air probe, T/C Type K  
                                                :
                                                0602 1793
                                              • Temperature probes
                                                Fast-action surface probe with sprung thermocouple strip
                                                Fast-action surface probe with spring thermocouple , for uneven surfaces, short-term range to +932°F, T/C Type K
                                                  :
                                                  0602 0393
                                                • Temperature probes
                                                  Fast-reaction paddle surface probe
                                                  Fast-reaction paddle surface probe, for measurements in inaccessible places, e.g. narrow apertures and slots, TC Type K
                                                    :
                                                    0602 0193
                                                  • Temperature probes
                                                    Efficient, waterproof surface probe with small measurement head
                                                    Efficient, waterproof surface probe with small measurement head for flat surfaces, T/C Type K
                                                      :
                                                      0602 0693
                                                    • Temperature probes
                                                      Fast-action surface probe with sprung thermocouple strip
                                                      Fast-action surface probe with spring thermocouple for uneven surfaces, short-term to +932°F, T/C Type K
                                                        :
                                                        0602 0993
                                                      • Temperature probes
                                                        Magnetic probe (TC type K) - for surface temperatures
                                                        Magnetic probe, adhesive force approx. 20 N, with magnets, for measurements on metal surfaces
                                                          :
                                                          0602 4792
                                                        • Temperature probes
                                                          Magnetfühler, Haftkraft ca. 10 N, mit Haft-Magneten
                                                          Surface temperature probe with magnet (TC type K), adhesive power 10 N – Measuring range -50 to +400°C
                                                            :
                                                            0602 4892
                                                          • Temperature probes
                                                            Waterproof surface probe with widened measurement tip
                                                            Waterproof surface probe with widenend measurement tip for flat surfaces, T/C Type K
                                                              :
                                                              0602 1993
                                                            • Temperature probes
                                                              Pipe wrap probe with velcro strip
                                                              Temperature probe with Velcro (TC Type K)
                                                                :
                                                                0628 0020
                                                              • Temperature probes
                                                                Pipe wrap probe for pipe diameter 5 to 65 mm
                                                                Pipe clamp probe for pipe diameter 0.2 to 2.5'', with replaceable measuring head. Measuring range to 536 °F short-term
                                                                  :
                                                                  0602 4592
                                                                • Temperature probes
                                                                  Clamp probe for measurements on pipes
                                                                  Clamp probe for measurements on pipes, pipe diameter 0.6 to 1'' (max. 1''), meas. range to +266 °F short-term
                                                                    :
                                                                    0602 4692
                                                                  • Temperature probes
                                                                    Efficient and fast-action immersion probe, waterproof
                                                                    Efficient and fast-action immersion probe, waterproof, T/C Type K
                                                                      :
                                                                      0602 0593
                                                                    • Temperature probes
                                                                      Fast-action, waterproof immersion/penetration probe
                                                                      Super-quick, waterproof immersion/penetration probe, T/C Type K
                                                                        :
                                                                        0602 2693
                                                                      • Temperature probes
                                                                        Tauch-Messspitze, biegsam, TE Typ K
                                                                        Immersion tip, flexible
                                                                        Measuring range: -328° to 1832 °F (-200° to 1000 °C)
                                                                          :
                                                                          0602 5792
                                                                        • Temperature probes
                                                                          Immersion tip, flexible
                                                                            :
                                                                            0602 5793
                                                                          • Temperature probes
                                                                            Immersion measurement tip, flexible, for measurements in air
                                                                            Flexible immersion measurement tip for measurements in air/exhaust gases (not suitable for measurements in smelters), TC Type K -104 to +1832 °F, 39" long, Ø 0.12"
                                                                              :
                                                                              0602 5693
                                                                            • Temperature probes
                                                                              Waterproof immersion/penetration probe, TC Type K
                                                                              Waterproof immerstion/penetration probe, T/C Type K
                                                                                :
                                                                                0602 1293
                                                                              • Temperature probes
                                                                                Flexible, low-mass immersion measurement tip
                                                                                Flexible, low-mass immersion measurement tip, ideal for measurements in small volumes such as petri dishes, or for surface measurements (e.g. attached with adhesive tape), TC Type K
                                                                                  :
                                                                                  0602 0493
                                                                                • Temperature probes
                                                                                  Wasserdichter Lebensmittelfühler aus Edelstahl (IP65)
                                                                                  Waterproof food probe made of stainless steel (IP65)
                                                                                    :
                                                                                    0602 2292
                                                                                  • Temperature probes
                                                                                    Thermocouple with TC adapter, flexible, 800 mm long
                                                                                    Thermocouple with T/C adapter, flexible, 32 in. long, fibre glass, T/C Type K
                                                                                      :
                                                                                      0602 0644
                                                                                    • Temperature probes
                                                                                      Thermocouple with TC adapter, flexible, length 1500 mm
                                                                                      Thermocouple with T/C adapter, flexible, 60 in. long, fibre glass, T/C Type K
                                                                                        :
                                                                                        0602 0645
                                                                                      • Temperature probes
                                                                                        Thermocouple with TC adapter, flexible, 1500 mm long, PTFE
                                                                                        Thermocouple with T/C adapter, flexible, 60 in. long, PTFE, T/C Type K
                                                                                          :
                                                                                          0602 0646
                                                                                        • Temperature probes
                                                                                          Flexible temperature probe (digital)
                                                                                          Flexible temperature probe (digital) with Pt100 temperature sensor: for temperature measurements in locations that are difficult to access and in liquids – measuring range -100 to +260 °C
                                                                                            :
                                                                                            0618 0071
                                                                                          • Temperature probes
                                                                                            Robust, fast-action air probe (digital)
                                                                                            Robust, fast-action air probe (digital)
                                                                                              :
                                                                                              0618 0072
                                                                                            • Temperature probes
                                                                                              Immersion/penetration probe (digital)
                                                                                              Immersion/penetration probe (digital) with Pt100 temperature sensor: for temperature measurements in liquids and pastes – measuring range -100 to +400 °C, accuracy up to ±0.15 °C
                                                                                                :
                                                                                                0618 0073
                                                                                              • Temperature probes
                                                                                                Glass-coated laboratory probe (digital)
                                                                                                Glass-coated laboratory probe (Pt100 temperature sensor, digital) for temperature measurements in aggressive media – measuring range -50 to +400 °C
                                                                                                  :
                                                                                                  0618 7072
                                                                                                • Temperature probes
                                                                                                  High-precision immersion/penetration probe (digital)
                                                                                                  High-precision immersion/penetration probe (Pt100 temperature sensor, digital) for temperature measurements in liquids and pastes – measuring range -80 to +300 °C, accuracy up to ±0.05 °C
                                                                                                    :
                                                                                                    0618 0275
                                                                                                  • Temperature probes
                                                                                                    testo 115i
                                                                                                      :
                                                                                                      0560 2115 03
                                                                                                    • Velocity Probe

                                                                                                    • Velocity Probe
                                                                                                      Hot wire probe (digital) with Bluetooth® including temperature and humidity sensor
                                                                                                      Hot wire probe (digital) with Bluetooth® including temperature and humidity sensor: for measurements in ventilation ducts – measuring range 0 to +50 m/s, -20 to +70 °C, 5 to 95% RH
                                                                                                        :
                                                                                                        0635 1571
                                                                                                      • Velocity Probe
                                                                                                        Hot wire probe (digital) including temperature and humidity sensor, wired
                                                                                                        Hot wire probe (digital) including temperature and humidity sensor, wired: for measurements in ventilation ducts – measuring range 0 to +50 m/s, -20 to +70 °C, 5 to 95% RH
                                                                                                          :
                                                                                                          0635 1572
                                                                                                        • Velocity Probe
                                                                                                          Hot wire probe head including temperature and humidity sensor
                                                                                                          Hot wire probe head including temperature and humidity sensor: for attachment to extendable telescope for air velocity probes with universal handle – measuring range 0 to +50 m/s, -20 to +70 °C, 5 to 95% RH
                                                                                                            :
                                                                                                            0635 1570
                                                                                                          • Velocity Probe
                                                                                                            Vane probe (Ø 16 mm, digital) with Bluetooth®, including temperature sensor
                                                                                                            Vane probe (Ø 16 mm, digital) with Bluetooth® including temperature sensor: for measurements in ventilation ducts – measuring range +0.6 to +50 m/s, -10 to +70 °C
                                                                                                              :
                                                                                                              0635 9571
                                                                                                            • Velocity Probe
                                                                                                              Vane probe (Ø 16 mm, digital) including temperature sensor, wired
                                                                                                              Vane probe (Ø 16 mm, digital) including temperature sensor, wired: for measurements in ventilation ducts – measuring range +0.6 to +50 m/s, -10 to +70 °C
                                                                                                                :
                                                                                                                0635 9572
                                                                                                              • Velocity Probe
                                                                                                                16 mm vane probe head including temperature sensor
                                                                                                                16 mm vane probe head including temperature sensor; for attachment to extendable telescope for air velocity probes with universal handle – measuring range +0.6 to +50 m/s, -10 to +70 °C
                                                                                                                  :
                                                                                                                  0635 9570
                                                                                                                • Velocity Probe
                                                                                                                  Hot wire probe (digital) including temperature sensor, wired
                                                                                                                  Hot wire probe (digital) including temperature sensor, wired: for measurements in ventilation ducts – measuring range 0 to 30 m/s, -20 to +70 °C
                                                                                                                    :
                                                                                                                    0635 1032
                                                                                                                  • Velocity Probe
                                                                                                                    Vane probe (Ø 16 mm, digital) wired
                                                                                                                    Vane probe (Ø 16 mm, digital), wired: for measurements in ventilation ducts – measuring range +0.6 to +50 m/s
                                                                                                                      :
                                                                                                                      0635 9532
                                                                                                                    • Velocity Probe
                                                                                                                      Fume cupboard probe (digital), wired
                                                                                                                      Fume cupboard probe (digital), wired: for measuring inflow speed and exhaust air volume flow in fume cupboards according to DIN EN 14175-3/-4 – measuring range 0 to 5 m/s, 0 to +50 °C
                                                                                                                        :
                                                                                                                        0635 1052
                                                                                                                      • Velocity Probe
                                                                                                                        High-precision vane probe (Ø 100 mm, digital) with Bluetooth® including temperature sensor
                                                                                                                        High-precision vane probe (Ø 100 mm, digital) with Bluetooth® including temperature sensor: for measurements at air outlets in cleanrooms and at plate outlets, ventilation grilles or swirl outlets – measuring range +0.1 to +15 m/s, -20 to +70 °C
                                                                                                                          :
                                                                                                                          0635 9371
                                                                                                                        • Velocity Probe
                                                                                                                          High-precision vane probe (Ø 100 mm, digital) including temperature sensor, wired
                                                                                                                          High-precision vane probe (Ø 100 mm, digital) including temperature sensor, wired: for measurements at air outlets in cleanrooms, as well as at plate outlets, ventilation grilles or swirl outlets – measuring range +0.1 to +15 m/s, -20 to +70 °C
                                                                                                                            :
                                                                                                                            0635 9372
                                                                                                                          • Velocity Probe
                                                                                                                            High-precision 100 mm vane probe head including temperature sensor
                                                                                                                            High-precision 100 mm vane probe head including temperature sensor: for attachment to extendable telescope for air velocity probes with universal handle or to a universal Bluetooth® or cable handle – measuring range +0.1 to +15 m/s, -20 to +70 °C
                                                                                                                              :
                                                                                                                              0635 9370
                                                                                                                            • Velocity Probe
                                                                                                                              Vane probe (Ø 100 mm, digital) with Bluetooth® including temperature sensor
                                                                                                                              Vane probe (Ø 100 mm, digital) with Bluetooth® including temperature sensor: for measurements at ceiling/air outlets and at plate outlets, ventilation grilles or swirl outlets – measuring range +0.3 to +35 m/s, -20 to +70 °C
                                                                                                                                :
                                                                                                                                0635 9431
                                                                                                                              • Velocity Probe
                                                                                                                                Vane probe (Ø 100 mm, digital) including temperature sensor, wired
                                                                                                                                Vane probe (Ø 100 mm, digital) including temperature sensor, wired: for measurements at ceiling/air outlets and at plate outlets, ventilation grilles or swirl outlets – measuring range +0.3 to +35 m/s, -20 to +70 °C
                                                                                                                                  :
                                                                                                                                  0635 9432
                                                                                                                                • Velocity Probe
                                                                                                                                  100 mm vane probe head
                                                                                                                                  100 mm vane probe head: for attachment to extendable telescope for air velocity probes with universal handle or to universal Bluetooth® or cable handle – measuring range +0.3 to +35 m/s, -20 to +70 °C
                                                                                                                                    :
                                                                                                                                    0635 9430
                                                                                                                                  • Velocity Probe
                                                                                                                                    testo 405i German Design Award
                                                                                                                                    testo 405i – thermal anemometer with smartphone operation
                                                                                                                                      :
                                                                                                                                      0560 1405
                                                                                                                                    • Velocity Probe
                                                                                                                                      Smart Probes VAC Set
                                                                                                                                      testo 410i – vane anemometer with smartphone operation
                                                                                                                                        :
                                                                                                                                        0560 1410
                                                                                                                                        $ 136.00
                                                                                                                                        1
                                                                                                                                      • Velocity Probe
                                                                                                                                        Thermische Strömungssonde (Hitzdraht) ~ 7,5 mm
                                                                                                                                        Hot wire probe (Ø 7.5 mm, digital), incl. temperature sensor, fixed cable: for measurement in ventilation ducts, at plate outlets, ventilation grilles – measuring range 0 to 20 m/s, -20 to +70 °C
                                                                                                                                          :
                                                                                                                                          0635 1026
                                                                                                                                          $ 739.00
                                                                                                                                          1
                                                                                                                                        • Velocity Probe
                                                                                                                                          Hot ball probe (Ø 3 mm) - for flow and temperature
                                                                                                                                          Hot ball probe (Ø 3 mm, digital), incl. temperature sensor, fixed cable: for measurement in non-directional air flows – measuring range 0 to 10 m/s, -20 to +70 °C
                                                                                                                                            :
                                                                                                                                            0635 1051
                                                                                                                                            $ 960.00
                                                                                                                                            1
                                                                                                                                          • Sets

                                                                                                                                          • Sets
                                                                                                                                            testo 440 Hot Wire Kit
                                                                                                                                            testo 440 Hot Wire Kit: for measuring air velocity, volume flow and temperature in ventilation ducts with a hot wire probe
                                                                                                                                              :
                                                                                                                                              0563 4400
                                                                                                                                              $ 750.00
                                                                                                                                              1
                                                                                                                                            • Sets
                                                                                                                                              testo 440 16 mm Vane Kit
                                                                                                                                              testo 440 16 mm Vane Kit: for measuring air velocity and volume flow in ventilation ducts with a vane probe (Ø 16 mm)
                                                                                                                                                :
                                                                                                                                                0563 4401
                                                                                                                                                $ 795.00
                                                                                                                                                1
                                                                                                                                              • Sets
                                                                                                                                                testo 440 100 mm Vane Kit with Bluetooth®
                                                                                                                                                testo 440 100 mm Vane Kit with Bluetooth®: for measuring air velocity, volume flow and temperature at air outlets
                                                                                                                                                  :
                                                                                                                                                  0563 4403
                                                                                                                                                  $ 995.00
                                                                                                                                                  1
                                                                                                                                                • Sets
                                                                                                                                                  testo 440 Humidity Kit with Bluetooth®
                                                                                                                                                  testo 440 Humidity Kit with Bluetooth®: for measuring humidity and temperature in storage, refrigerated and work rooms, in ventilation ducts and also on refrigeration systems and heat pumps using the humidity/temperature probe with Bluetooth
                                                                                                                                                    :
                                                                                                                                                    0563 4404
                                                                                                                                                    $ 625.00
                                                                                                                                                    1
                                                                                                                                                  • Sets
                                                                                                                                                    testo 440 CO2 Kit with Bluetooth®
                                                                                                                                                    testo 440 CO₂ Kit with Bluetooth®: for measuring CO2 concentration, humidity and temperature in indoor areas and for evaluating the indoor air quality (IAQ) with a CO2 probe
                                                                                                                                                      :
                                                                                                                                                      0563 4405
                                                                                                                                                      $ 1,095.00
                                                                                                                                                      1
                                                                                                                                                    • Sets
                                                                                                                                                      testo 440 Air Flow ComboKit 1 with Bluetooth®t 1 with Bluetooth
                                                                                                                                                      testo 440 Air Flow ComboKit 1 with Bluetooth®: for measuring air velocity, volume flow and temperature in ventilation ducts (with Ø 9 mm hot wire probe) and at air outlets (with Ø 100 mm vane probe)
                                                                                                                                                        :
                                                                                                                                                        0563 4406
                                                                                                                                                        $ 1,350.00
                                                                                                                                                        1
                                                                                                                                                      • Sets
                                                                                                                                                        testo 440 Air Flow ComboKit 2 with Bluetooth®
                                                                                                                                                        testo 440 flow combo-kit 2 with Bluetooth®: for measuring flow, volume flow and temperature in ventilation ducts (with Ø 16 mm vane probe) and at air outlets (with Ø 100 mm vane probe)
                                                                                                                                                          :
                                                                                                                                                          0563 4407
                                                                                                                                                          $ 1,425.00
                                                                                                                                                          1
                                                                                                                                                        • Sets
                                                                                                                                                          testo 440 Indoor Comfort ComboKit with Bluetooth®
                                                                                                                                                          testo 440 Indoor Comfort ComboKit with Bluetooth®: for evaluating the indoor air quality (CO2 concentration, temperature and humidity) with CO2 probe and for determining the degree of turbulence and draught risk in workplaces according to EN ISO 7730 / ASHRAE 55 (with turbulence probe)
                                                                                                                                                            :
                                                                                                                                                            0563 4408
                                                                                                                                                            $ 2,350.00
                                                                                                                                                            1
                                                                                                                                                          • Accessories

                                                                                                                                                            Transport Case


                                                                                                                                                            Convenience and maximum flexibility for duct and outlet measurements

                                                                                                                                                            With our large range of air velocity probes (please order separately), you can carry out simple and convenient measurements even at locations that are difficult to access in ventilation ducts or at air outlets:
                                                                                                                                                            you will even find it easy to carry out measurements in particularly large ducts. This is because the extendable telescope on the hot wire and vane probe (Ø 16 mm) with universal handle can be further extended using the telescope extension – enabling you to attain a total length of 2 metres.
                                                                                                                                                            Carry out measurements at air/ceiling outlets effortlessly and without using a ladder. Fit your vane probe (Ø 100 mm) with the telescope with 90° angle and, if necessary, with the telescope extension (both can be ordered separately).
                                                                                                                                                            Greater freedom thanks to Bluetooth: the air velocity probes with Bluetooth have no inconvenient cable connection to the measuring instrument, and they transmit readings up to a distance of 20 m. Press the button on the probe to operate the measuring instrument – for example, to start and stop a series of measurements (timed mean calculation).
                                                                                                                                                            Attach the testo 440 air velocity and IAQ measuring instrument to metal surfaces (e.g. ducts) easily using the practical magnets.
                                                                                                                                                            Benefit from fast calculation of the volume flow: in the “volume flow” measurement menu of the multifunction measuring instrument, configure the dimensions and geometry of the duct cross-section – the measuring instrument shows you the volume flow straight away.
                                                                                                                                                            Volumetric flow measurement in ventilation ducts with vane probe (Ø 16 mm) and testo 440

                                                                                                                                                            Long-term monitoring of indoor air quality

                                                                                                                                                            Poor indoor air quality due to excessive concentrations of CO2 can cause tiredness, lack of concentration and even illness. With its menu for recording readings, the testo 440 air velocity and IAQ measuring instrument is ideal for monitoring the indoor air quality. Enter the measurement time and the measuring cycle – and, for example, track the change in CO2 concentration or humidity and temperature values over the course of the day. Simply choose between probes with Bluetooth or fixed cable for CO2, CO or humidity (please order probes separately).
                                                                                                                                                            Measure CO2 concentration for assessing indoor air quality with CO2 probe and testo 440

                                                                                                                                                            Turbulence measurement in accordance with EN ISO 7730 / ASHRAE 55

                                                                                                                                                            Determine the degree of turbulence and the draught risk in the workplace: draught restricts the comfort level and is the most common cause of complaints about the indoor climate. The turbulence probe (please order separately) measures air velocity and air temperature, and automatically calculates the draught risk and the degree of turbulence in accordance with EN ISO 7730/ASHRAE 55.
                                                                                                                                                            For convenient measurements at varying heights, we recommend using our measuring tripod for comfort level measurement (please order separately). This makes it very easy to position turbulence probes in compliance with the standards.
                                                                                                                                                            Determining the degree of turbulence with turbulence probe and testo 440

                                                                                                                                                            Range of probes for cleanrooms and laboratories

                                                                                                                                                            The testo 440 air velocity & IAQ measuring instrument is also ideal for a wide variety of applications in cleanrooms and laboratories in conjunction with the following probes:
                                                                                                                                                            • High-precision flow measurement in fume cupboards with the fume cupboard probe
                                                                                                                                                            • Thanks to the low start-up speed of 0.1 m/s, the high-precision vane probe (Ø 100 mm) is ideal for laminar flow measurements in cleanrooms. It is available as a variant with Bluetooth or with fixed cable
                                                                                                                                                            • To measure the humidity in cleanrooms, we recommend the high-precision humidity/temperature probe (0636 9771 or 0636 9772). With an accuracy of ±(0.6 %RH + 0.7% of m.v.) (0 to 90 %RH), it also meets the requirements for humidity measurements in this particularly sensitive area
                                                                                                                                                            • Use the high-precision digital Pt100 temperature probes, for example, for high-precision comparative measurements in calibration laboratories, temperature measurements in chemical laboratories or in the cosmetics industry as well as for determining the temperature distribution in refrigerators and conditioning cabinets
                                                                                                                                                            Volumetric flow measurement in fume cupboards with fume cupboard probe and testo 440