testo 440 - Humidity / Temperature Meter

• Intuitive: Clearly structured measurement menus for volume flow, degree of turbulence, cooling / heating power, mold indication and long-term measurement, such as CO₂

• Wireless: Bluetooth® probes for more convenience in measurement and less clutter in the measurement case (please order probes separately)

• Clear: Large graphic display with parallel display of 3 measured values

• Reliable and secure: internal data memory and USB interface for data export

Product description

With the testo 440 climate meter, you can measure and store all climate-relevant parameters in combination with high-quality probes (please order probes separately). Up to 3 probes can be connected at the same time: a Bluetooth probe, a wired probe and a temperature sensor with thermocouple type K connection. Automatic probe detection and clearly structured measurement menus ensure extremely easy operation and make your daily work easier.

In just a few clicks to measure with the testo 440 multifunction measuring instrument

Carry out your measurements quickly and easily: The climate measuring device automatically detects each connected probe. This saves you having to manually readjust the parameters when changing probes. Clearly structured measuring menus for volume flow measurement in the duct / outlet, hopper measurement, turbulence level measurement, determination of cooling / heating capacity, mold indication and long-term measurement support you optimally in your daily work.

Wireless and space-saving: more applications, less equipment

Unlimited versatility: A universal handle can be connected to all probe heads - so you can handle more applications with less equipment and save space.

For more comfort in your measurement and less tangling in the case of the Bluetooth handle. It allows measurements without interfering cable connection and transmits measured values up to a distance of 20 m. Or use the cable handle as a practical alternative for connecting testo probe heads. This is an advantage if Bluetooth signals are not allowed.

Practical measurement data management

The multifunction meter stores up to max. 7500 measurement protocols that can be read out via a USB interface and processed as a CSV file on your computer (eg with Excel). With the testo BLUETOOTH- / IRDA-printer (please order separately) you have the possibility to make a protocol printout of the measurement data directly on site.

Intelligent calibration concept for highest precision

With our digital probes, you can rely on precise measurement results, since the measurement uncertainty of the instrument is eliminated. For calibration, only send the probes. This way, the multifunction measuring device can always be used.

Advantages of measuring with the testo 440 climate meter

Accurate and reliable in the duct and at the air outlet

• Wide range of connectable probes: hot wire and vane probe (Ø 16 mm) for measurements in the duct; Large impeller probes with Ø 100 mm for measurements on air / ceiling outlets
• Quick calculation of volumetric flow: simply configure the dimension and geometry of the duct cross-section in the measurement menu and have the volumetric flow displayed directly on the instrument
• Even in very large channels you can measure comfortably. Because the extendable telescope of the hot wire and vane probe (Ø 16 mm) with universal handle can be additionally extended with the telescope extension - so you achieve a total length of 2 meters
• Measurements on air / ceiling outlets can be carried out effortlessly and without a ladder. Equip the vane probe (Ø 100 mm) with the retractable telescope with 90 ° angle and, if necessary, with the telescopic extension (both sold separately)
• Vane probes in conjunction with the testovent measuring funnels and rectifier for checking the supply and exhaust air at poppet valves, ventilation grids and twist outlets
• Practical Bluetooth interface: Measure with the flow probes without disturbing cable, operate the meter by pressing the button on the handle of the probe eg starting or stopping the averaging over time
• Use the practical magnets to attach the multifunction measuring instrument securely to metal surfaces (eg ventilation duct)

Long-term monitoring of indoor air quality

• The right probe for your needs: probes for CO ₂ , CO, air temperature and humidity are available as a variant with Bluetooth or with permanently attached cable
• Easy to use: enter measurement duration and interval into the menu for long-term measurement and follow it throughout the day
• Internal memory for up to 7500 measurement protocols

Turbulence degree measurement according to EN ISO 7730 / ASHRAE 55

• Achieve high accuracy even at low flow velocities with turbulence level probe
• Automatic calculation of draft risk and degree of turbulence according to EN ISO 7730 / ASHRAE 55
• For comfortable measurements in different heights we recommend the use of our measurement tripod for comfort measurement. The standard-compliant positioning of the turbulence level probes is therefore particularly simple

Sensor range for clean rooms and laboratories

• Fume hood probe for high-precision flow measurement at the fume hood
• The high-precision vane wheel probe (Ø 100 mm) is ideally suited for laminar flow measurements in clean rooms thanks to the low start-up speed of 0.1 m / s. Available as a variant with Bluetooth or with permanently connected cable
• High-precision temperature-humidity probe (0636 9771 or 0636 9772) with an accuracy of ± (0.6% RH + 0.7% of MW) in the range of 0 ... 90% RH for measuring humidity in clean rooms

Delivery