This testo 440 kit is great for carrying out measurements in ventilation ducts and at air outlets. The testo 440 air velocity and IAQ measuring instrument, its vane probe (Ø 3.9") with Bluetooth and temperature sensor, and hot wire probe including temperature sensor can all be safely stored in the included case.
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A measuring instrument for all climate-related parameters
Intuitive: clearly structured measurement menu for volume flow and parallel determination of air velocity, humidity and temperature in ventilation ducts or at ventilation outlets
Clever: hot wire probe with telescope (0.85 m) – combine the vane probe (Ø 100 mm) with Bluetooth with the telescope for ceiling outlets or the funnel set for plate outlets (please order separately) as required
Extendible with a wide range of probes
Wireless measurement with Bluetooth probes
USB interface for exporting measurement reports as CSV files
±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
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
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
General technical data
General technical data
Storage temperature
-4° to 140 °F / -20 to +60 °C
Weight
12.7 oz. / 360 g
Dimensions
14.8 x 4.1 x 1.8 in. / 375 x 105 x 46 mm
Operating temperature
23° to 122 °F / -5 to +50 °C
Probe head diameter
3.937 in. / 100 mm
Product colour
black/orange
Battery type
4 x AA batteries
Battery life
60 h
Data transfer
Bluetooth®
Radio range
65.616 ft. / 20 m
Temperature - NTC
Temperature - NTC
Measuring range
-4° to 158 °F / -20 to +70 °C
Accuracy
±0.9 °F / ±0.5 °C
Resolution
0.1 °F / 0.1 °C
Velocity / Volume flow
Velocity / Volume flow
Measuring range
59.1 to 6890 fpm / 0.3 to 35 m/s
Accuracy
±(0.04 m/s + 5 % of mv) (0.3 to 35 m/s) / ±(0.2 m/s + 1.5 % of mv) (20.01 to 35 m/s)
±(7 fpm + 5% of mv) (59 to 6890 fpm) / ±(0.1 m/s + 1.5 % of mv) (0.3 to 20 m/s)
Resolution
1 fpm / 0.01 m/s / 0.01 m/s
Temperature - NTC
Temperature - NTC
Measuring range
-4° to 158 °F / -20 to +70 °C
Accuracy
±0.9 °F / ±0.5 °C
Resolution
0.1 °F / 0.1 °C
Absolute Pressure
Absolute Pressure
Measuring range
+280 to +440 InHâ‚‚O / +700 to +1100 hPa
Accuracy
±1.2 InH₂O / ±3.0 hPa
Resolution
0.1 InHâ‚‚O / 0.1 hPa
Velocity - Hot wire anemometer
Velocity - Hot wire anemometer
Measuring range
0 to 5906 fpm / 0 to 30 m/s
Accuracy
±(98.4 fpm + 5 % of mv) / ±(0.5 m/s + 5 % of mv)
(0 to 3937 fpm) / (0 to 20 m/s)
±(5.91 fpm + 4 % of mv) / ±(0.03 m/s + 4 % of mv)
(3938.98 to 5906 fpm) / (20.01 to 30 m/s)
Resolution
1.97 fpm / 0.01 m/s
General technical data
General technical data
Storage temperature
-4° to 158 °F / -20 to +70 °C
Weight
3.2 oz. / 90 g
Dimensions
12.4 x 0.5 x 0.5 in. / 315 x 12 x 12 mm
Operating temperature
-4° to 158 °F / -20 to +70 °C
Cable length
5.577 ft. / 1.7 m
Length telescope
33.465 in. / 850 mm
Probe head diameter
0.354 in. / 9 mm
Diameter telescope
0.472 in. / 12 mm
Product colour
Black; silver
Diameter probe shaft
0.472 in. / 12 mm
General technical data
General technical data
Weight
49.4 oz. / 1400 g
Dimensions
20.3 x 5.3 x 10.1 in. / 516 x 135 x 256 mm
Product colour
Black
testo 440 air velocity and IAQ measuring instrument, 3 AA batteries, USB cable, and calibration protocol (0560 4401)
Vane probe (Ø 3.9") with Bluetooth, including temperature sensor (consisting of 3.9" vane probe head, handle adapter, and Bluetooth handle), bracket for testovent measurement funnel, 4 AA batteries, and calibration protocol (0635 9431)
Hot wire probe (Ø 0.35") with fixed cable (length 5.6'), including temperature sensor with telescope (extendable to 2.8') and calibration protocol (0635 1032)
Combi-case for testo 440 and multiple probes (0516 4401)
Convenience and maximum flexibility for duct and outlet measurements
Use our large range of air velocity probes (please order probes that are not included in the kit separately) to carry out simple, convenient measurements even at locations that are difficult to access in ventilation ducts or at air outlets:
You can even carry out easy 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 dP 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 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.
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