IAQ Measuring Instrument-testo 440

Description

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 (please order probes separately). Up to 3 probes can be connected simultaneously: a Bluetooth probe, a wired probe and a temperature probe with type K thermocouple connector. Automatic probe detection and clearly structured measurement menus guarantee simple operation and will make your day-to-day work easier.

With the testo 440 multipurpose measuring tool, you can measure in only a few clicks.

Carry out your measurements fast and simply since the air velocity and IAQ measuring device recognises each attached probe automatically. This implies that while changing probes, you won’t have to manually reset the settings. Evaluating the volume flow in ducts/at outlets, funnel measurement, measuring the degree of turbulence, estimating the cooling/heating output, mould detection, and long-term measurement are all supported by well designed measurement menus.

More applications, less equipment: wireless and space-saving

A universal handle can be linked to any probe head, allowing you to master more applications with less equipment and conserve space.

The Bluetooth handle makes it easier to conduct your measurement and ensures that the casing is less cluttered with cables. It makes it possible to carry out measurements without any bothersome cable connection and it transfers readings up to a distance of 20 m. Use the cable handle to connect testo probe heads as a practical option. If Bluetooth signals are not allowed, this is a benefit.

Data management for practical measurements

Up to 7500 measurement protocols may be stored in the multifunction measuring instrument, which can be read through a USB port and processed as a CSV file on your computer (e.g. with Excel). You may print a report printout of the measurement data immediately on site with the testo BLUETOOTH/IRDA printer (please purchase separately).

Intelligent calibration concept for optimal precision

When you use our digital probes, you can count on precise measurement findings since the measuring device eliminates measurement ambiguity. Only the probes must be sent in for calibration. As a result, the multifunction measuring device can be used indefinitely.

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Technical Data

Temperature - NTC

Measuring range

-40 to +150 °C

Accuracy

±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)

Resolution

0.1 °C

Temperature - TC Type K (NiCr-Ni)

Measuring range

-200 to +1370 °C

Accuracy

±(0.3 °C + 0.3 % of mv)

Resolution

0.1 °C

General technical data

Weight

250 g

Dimensions

154 x 65 x 32 mm

Operating temperature

-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

Connectable probes

4 x digital Bluetooth® probe or testo Smart Probe; 2 x digital probe with fixed cable or temperature probe NTC with fixed cable (via Testo Universal Connector - TUC); 2 x temperature probe TC type K with fixed cable

Product colour

black/orange

Battery type

3 AA mignon 1.5 V

Battery life

12 h (typically vane measurement)

Interface

Bluetooth®; USB

Storage temperature

-20 to +50 °C

Accessories/ Probes

Cable handle for connecting probe heads: transmits readings via cable

Order Number: 0554 2222

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Bluetooth® handle for connecting probe heads: transmits readings conveniently via Bluetooth

Order Number: 0577 0400

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Measuring tripod for flow measurements, for standard-compliant and secure positioning of probes

Order Number: 0554 1592

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Applications

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.

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