• Testo 440 Hot Wire Kit
  • testo-440-0635-1032-Hot-wire-probe-incl-temperature-sensor-fixed-cable-V3-de_master

testo 440 Hot Wire Kit

Rp 11,800,000.00
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• Intuitive: clearly structured measurement menu for volume flow and parallel determination of air velocity, volume flow and air temperature in ventilation ducts 

• Convenient: integrated telescope that can be extended to 0.85 m, with scaling, makes it easy to carry out measurements 

• Reliable: absolute pressure compensation, internal data storage and USB port for data export 

• As multifaceted as your challenges themselves: the air velocity and IAQ measuring instrument can be expanded with a large portfolio of digital probes

Kit for carrying out measurements in ventilation ducts: the testo 440 air velocity and IAQ measuring instrument and the hot wire probe (Ø 9 mm) including temperature sensor are all safely stowed away in the case. So you can get down to work straight away!

Product description

Kit for carrying out measurements in ventilation ducts: the testo 440 air velocity and IAQ measuring instrument and the hot wire probe (Ø 9 mm) including temperature sensor are all safely stowed away in the case. So you can get down to work straight away!

Delivery Scope

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

 • Hot wire probe (Ø 9 mm) with fixed cable (length 1.7 m) including temperature sensor, with telescope (can be extended to 0.85 m) and calibration protocol (0635 1032)

 • Basic case for testo 440 and 1 probe

Technical data/Product specification

Temperature - NTC
Measuring range-40 to +150 °C
±0.4 °C (-40 to -25.1 °C)
±0.3 °C (-25 to +74.9 °C)
±0.4 °C (+75 to +99.9 °C)
±0.5 % of mv (Remaining Range)
Resolution0.1 °C

Temperature - TC Type K (NiCr-Ni)
Measuring range-200 to +1370 °C
Accuracy±(0.3 °C + 0.3 % of mv)
Resolution0.1 °C

General technical data
Weight250 g
Dimensions154 x 65 x 32 mm
Operating temperature-20 to +50 °C
Connectable probes1 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 colourblack/orange
Battery type3 AA mignon 1.5 V
Battery life12 h (typically vane measurement)
InterfaceBluetooth®; USB
Storage temperature-20 to +50 °C

Vane probe (Ø 16 mm, digital) - wired
Order-Nr. 0635 9532
Velocity / Volume flow
Measuring range0.6 to 50 m/s
±(0.2 m/s + 1 % of mv) (0.6 to 40 m/s)
±(0.2 m/s + 2 % of mv) (40.1 to 50 m/s)
Resolution0.1 m/s

General technical data
Storage temperature-10 to +70 °C
Weight150 g
Dimensions330 x 16 x 16 mm
Operating temperature-10 to +70 °C
Cable length1.7 m
Length telescope850 mm
Probe head diameter16 mm
Diameter telescope12 mm
Product colourBlack; silver


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 meters.

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 20m. 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.


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).


Turbulence measurement in accordance with EN ISO 7730 / ASHRAE 55

Determine the degree of turbulence and the drought risk in the workplace: drought 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.


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



Data sheet testo 440

Data sheet testo 440 Hot Wire Kit


Instruction manual testo 440

Instruction manual testo Air velocity and IAQ probes with fixed cable


Firmware update testo 440

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