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    2. Hot wire probe (digital)

    Hot wire probe (digital) - including temperature and humidity sensor, wired

    0635 1572
    ZAR 18,352.40 ZAR 21,105.26
  1. Intuitive: clearly structured measurement menu for volume flow and parallel determination of air velocity, volume flow, air temperature and humidity
  2. Precise: accurate measurement results from 0 to +50 m/s and automatic absolute pressure compensation
  3. Convenient: probe with a practical button on the handle for storing individual readings, convenient measurement in any cross-section with scaled telescope (up to 1 m), optionally extendable to 2.0 m
  4. Intelligent calibration concept
  5. For measurements in ventilation ducts: use the hot wire probe (with the compatible measuring instrument) to measure air velocity, volume flow, air temperature and humidity.
    Use the hot wire probe with the compatible testo multifunction measuring instrument (please order separately) to determine air velocity, volume flow, air temperature and humidity.

     

    Hot wire probe including temperature and humidity sensor – features

    Use the fixed cable on the handle to connect the hot wire probe to the measuring instrument (please order separately). The hot wire probe is equipped with a telescope, which can be extended to a maximum length of 1.0 m. The immersion depth is easy to read, even if visibility is poor, thanks to the high-contrast scaling.

    The clearly structured measurement menu for volume flow enables the measuring instrument to be operated intuitively. The volume flow is precisely calculated thanks to convenient input of the size and geometry of the duct cross-section. Timed and multi-point mean calculation, average volume flow, current reading and min./max. values are displayed in the measuring instrument.

    Particularly useful: press the button on the hot wire probe to operate the measuring instrument. For example, to store individual readings for multi-point mean calculation or to start and stop measurement series for mean calculation over time.

    Integrated sensor protection: when you are not using the hot wire probe, the rotatable protective cap protects the air velocity sensor from mechanical stress.

     

    Space-saving: more applications, less equipment

    Endlessly versatile: a universal handle can be connected to all probe heads – so you can master more applications using less equipment and save space.

    Order the Bluetooth® handle to make it more convenient to carry out your measurement and guarantee less cable clutter in the case. This transmits the readings to the measuring instrument from a distance of up to 20 metres. If the sensors (air velocity, temperature, humidity) need to be replaced in the distant future, you can change the probe head.

    If required, you can also fit the hot wire probe with the telescope extension (available to order separately). You can therefore attain a total length of 2 metres, making it easy to carry out measurements on large ventilation systems.

     

    Intelligent calibration concept

    You will get exceptionally accurate measurement results with the digital probe, because the measuring instrument makes measurement uncertainty a thing of the past. You only need to send the probe head in for calibration – so the measuring instrument remains in continuous use.

     

    Areas of application for the hot wire probe

    Ventilation ducts: Use the hot wire probe to measure flow velocity, air temperature and humidity in ventilation ducts with reliability.
    Since the measuring range goes up to +50 m/s and the total length of the probe can be extended to 2.0 m (please order the telescope extension separately), measurements can even be carried out on large ventilation systems.


     

    Hot wire probe including temperature and humidity sensor (consisting of hot wire probe head, handle adapter and cable handle (cable length 1.4 m)), telescope (extendable to 1.0 m) and calibration protocol.

  6. testo 440 Air velocity and IAQ measuring instrument
    testo 440 - Air velocity and IAQ measuring instrument
      :
      0560 4401
      ZAR 7,993.70 ZAR 9,192.75
      1
    • testo 440 100 mm Vane Kit with Bluetooth®
      testo 440 100 mm Vane Kit with Bluetooth®
        :
        0563 4403
        ZAR 16,909.75 ZAR 19,446.21
        1
      • testo 440 16 mm Vane Kit
        testo 440 16 mm Vane Kit
          :
          0563 4401
          ZAR 13,244.00 ZAR 15,230.60
          1
        • testo 440 Air Flow ComboKit 1 with Bluetooth®t 1 with Bluetooth
          testo 440 Air Flow ComboKit 1 with Bluetooth®
            :
            0563 4406
            ZAR 22,916.85 ZAR 26,354.38
            1
          • testo 440 Air Flow ComboKit 2 with Bluetooth®
            testo 440 Air Flow ComboKit 2 with Bluetooth®
              :
              0563 4407
              ZAR 24,241.25 ZAR 27,877.44
              1
            • testo 440 CO2 Kit with Bluetooth®
              testo 440 CO₂ Kit with Bluetooth®
                :
                0563 4405
                ZAR 18,210.50 ZAR 20,942.08
                1
              • testo 440 Hot Wire Kit
                testo 440 Hot Wire Kit
                  :
                  0563 4400
                  ZAR 12,676.40 ZAR 14,577.86
                  1
                • testo 440 Humidity Kit with Bluetooth®
                  testo 440 Humidity Kit with Bluetooth®
                    :
                    0563 4404
                    ZAR 10,642.50 ZAR 12,238.88
                    1
                  • testo 440 Indoor Comfort ComboKit with Bluetooth®
                    testo 440 Indoor Comfort ComboKit with Bluetooth®
                      :
                      0563 4408
                      ZAR 40,346.90 ZAR 46,398.93
                      1
                    • testo 440 Lux Kit
                      testo 440 Lux Kit
                        :
                        0563 4402
                        ZAR 14,781.25 ZAR 16,998.44
                        1
                      • testo 440 dP Air velocity and IAQ measuring instrument including differential pressure sensor
                        testo 440 dP - Air velocity and IAQ measuring instrument including differential pressure sensor
                         
                          :
                          0560 4402
                          ZAR 10,784.40 ZAR 12,402.06
                          1
                        • testo 440 Delta P Air Flow ComboKit 1 with Bluetooth®
                          testo 440 delta P Air Flow ComboKit 1 with Bluetooth®
                            :
                            0563 4409
                            ZAR 36,350.05 ZAR 41,802.56
                            1
                          • testo 440 Delta P Air Flow ComboKit 2 with Bluetooth®
                            testo 440 delta P Air Flow ComboKit 2 with Bluetooth®
                              :
                              0563 4410
                              ZAR 38,998.85 ZAR 44,848.68
                              1
                            • testo 440 Laboratory kit
                              testo 440 laboratory kit
                                :
                                0563 4412
                                ZAR 13,409.55 ZAR 15,420.98
                                1
                              • testo 400 Universal IAQ instrument
                                testo 400 - Universal IAQ instrument
                                  :
                                  0560 0400
                                • testo 400 IAQ and comfort kit with tripod
                                  testo 400 IAQ and comfort kit with tripod
                                    :
                                    0563 0401
                                  • testo 400 air flow kit with 16 mm vane probe
                                    testo 400 air flow kit with 16 mm vane probe
                                      :
                                      0563 0400 72
                                    • testo 400 air flow kit with hot wire probe
                                      testo 400 air flow kit with hot wire probe
                                        :
                                        0563 0400 71
                                      • Temperature - NTC

                                        Measuring range
                                        -20 to +70 °C
                                        Accuracy
                                        ±0,8 °C (-20 to 0 °C)
                                        ±0,5 °C (0 to +70 °C)
                                        Resolution
                                        0,1 °C

                                        Humidity - Capacitive

                                        Measuring range
                                        5 to 95 %RH
                                        Accuracy
                                        ±0,06 %RH/K (k=1)
                                        long-term stability: ±1 %RH / year
                                        ±3 %RH (10 to 35 %RH)
                                        Hysteresis: ±1,0 %RH
                                        ±3 %RH (65 to 90 %RH)
                                        ±2 %RH (35 to 65 %RH)
                                        ±5 (Remaining Range)
                                        Resolution
                                        0,1 %RH

                                        Absolute Pressure

                                        Measuring range
                                        +700 to +1100 hPa
                                        Accuracy
                                        ±3,0 hPa
                                        Resolution
                                        0,1 hPa

                                        Accessories

                                        Certificates

                                        Sensor heads

                                      • Sensor heads
                                        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
                                          ZAR 14,426.50 ZAR 16,590.47
                                        • Sensor heads
                                          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
                                            ZAR 17,903.05 ZAR 20,588.51
                                          • Sensor heads
                                            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
                                              ZAR 8,111.95 ZAR 9,328.74
                                            • Sensor heads
                                              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
                                                ZAR 13,433.20 ZAR 15,448.18
                                              • Sensor heads
                                                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
                                                  ZAR 2,435.95 ZAR 2,801.34
                                                • Sensor heads
                                                  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
                                                    ZAR 9,956.65 ZAR 11,450.15
                                                  • Sensor heads
                                                    CO2 probe head including temperature and humidity sensor
                                                    COâ‚‚ 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
                                                      ZAR 10,429.65 ZAR 11,994.10
                                                    • Sensor heads
                                                      CO probe head
                                                      CO probe head: for attachment to universal Bluetooth® or cable handle – measuring range 0 to 500 ppm
                                                        :
                                                        0632 1270
                                                        ZAR 7,165.95 ZAR 8,240.84