Testo 440dP Air Velocity and IAQ Tester

The Testo 440dP Air Velocity and IAQ Tester is a multifunctional environmental tester that can be combined with a range of Testo probes to detect mould and measure various air quality parameters:

• Air velocity
• Volume flow
• Degree of turbulence
• Cooling/ heating output
• CO₂ levels
• CO levels
• Air temperature
• Humidity

PLEASE NOTE that the Testo 440dP Air Velocity and IAQ Tester’s ability to measure the aforementioned parameters is dependent on the probes used with it. See the following video for a brief introduction to the Testo 440DB Air Velocity and IAQ Tester.

It is possible to connect up to three probes (one Bluetooth probe, one wired probe and one type-K temperature probe) to the Testo 440dP Air Velocity and IAQ Tester simultaneously. Probes are automatically recognised by the Testo 440dP Air Velocity and IAQ Tester, removing the need to adjust parameters with the addition of each new probe.

In addition to this, the Testo 440dP Air Velocity and IAQ Tester features a differential pressure sensor enabling pilot tube and K-factor measurements (pilot tube sold separately). The Testo 440dP Air Velocity and IAQ Tester can also determine volume flow via differential pressure and K-factor, as well as perform funnel measurements. Inclusion of a differential pressure sensor makes the Testo 440dP Air Velocity and IAQ Tester suitable for monitoring fans and filters, in addition to testing ducts, air/ceiling outlets, fume cupboards, air conditioning and ventilation systems.

The Testo 440dP Air Velocity and IAQ Tester features an intuitive interface with clearly structured measurement menus designed to guide the user through performing measurements, mould detection and long-term monitoring of CO and CO₂ levels. The Testo 440dP Air Velocity and IAQ Tester can be left to monitor CO and/or CO₂ unsupervised; the user needs only enter the measurement period and intervals. Similarly, entering the geometry and dimensions of the duct’s cross-section enables the automatic calculation of volume flow.

Furthermore, the Testo 440dP Air Velocity and IAQ Tester’s magnets mean it can be attached to metal surfaces allowing the user to leave it in place for monitoring applications and/ or conducting measurements remotely using Testo’s Bluetooth Smart Probes/ Data Loggers. Using Testo Bluetooth Smart Probe Data Loggers eliminates cable clutter and allows the user to commence and stop tests by pressing the button on the probe’s handle. These probes are able to transfer readings over a distance of up to 20m allowing the operator to conduct measurements remotely.

Results are indicated on the Testo 440dP Air Velocity and IAQ Tester’s large, graphic display; the user is able to view up to three parameters in parallel. He/she can save results to the Testo 440dP Air Velocity and IAQ Tester’s internal memory. This tester has the capacity to store up to 7500 measurement protocols.

It is possible to send measurements to print in the field using a Testo Bluetooth/IRDA Printer. Alternatively, using a USB connection, data can be transferred to a PC for processing in a CSV file.

Finally, the Testo 440dP Air Velocity and IAQ Tester provides maximum uptime as only the probes need to be sent for calibration, meaning the tester can remain in continuous use. The Testo 440dP Air Velocity and IAQ Tester is an adaptable, affordable and accurate multifunctional tester. It is ideal for adjusting air conditioning and ventilation systems, monitoring air quality, and performing comfort level tests.

Testo 440dP Air Velocity and IAQ Tester Key Features

• A multifunctional environmental tester for use with a range of Testo probes
• Detect mould
• Measure a variety of air quality parameters
• Air velocity
• Volume flow
• Degree of turbulence
• Cooling/ heating output
• CO₂ levels
• CO levels
• Air temperature
• Humidity
• Connect up to three probes simultaneously: 1x Bluetooth probe, 1x wired probe and 1x type-K temperature probe
• Probes are automatically recognised removing the need to adjust parameters each time a new probe is connected
• Differential pressure sensor: enables pilot tube and K-factor measurements
• Determine volume flow via differential pressure and K-factor
• Monitor fans and filters
• Test ducts, air/ceiling outlets, fume cupboards, air conditioning and ventilation systems
• Intuitive interface
• Clearly structured measurement menus that guide the user through measurements, mould detection and long-term CO and CO₂ levels
• Long-term monitoring: enter the measurement period and intervals
• Enter the geometry and dimensions of the duct cross-section for automatic calculation of volume flow
• Magnets for attachment to magnetic surfaces
• Compatible with Testo Bluetooth Smart Probes/ Data Loggers for remote, wireless testing
• Testo Bluetooth Smart Probes can transfer readings up to 20m
• Large, graphic display
• View up to three parameters in parallel
• Save up to 7500 measurement protocols to the internal memory
• Print data on-site using a Testo Bluetooth/ IRDA Printer
• Transfer data to a PC via a USB connection
• Process data in a CSV file on a PC
• Maximise uptime: only probes need to be sent for calibration
• Adaptable, affordable, accurate multifunctional tester
• Ideal for adjusting air conditioning and ventilation systems
• Suitable for monitoring air quality
• Perform comfort level tests

Measurement Capabilities When Used with Testo Probes

Please see the following video for a brief introduction to the Testo Probes compatible with the Testo 440DB Air Velocity and IAQ Tester.

• Hot wire and vane probes (Ø16mm) for measuring ducts
• Hot wire and vane probes with universal handles can be extended up to 2m using the telescopic extension enabling measurements of large ducts
• Large vane probes (Ø100mm) for measuring air/ ceiling outlets
• Ø100mm vane probes can be fitted with an extendable telescope with a 90° angle to measure air/ ceiling outlets without using a ladder
• Test the incoming/ outgoing air at plate outlets, ventilation grilles and swirl outlets by using the vane probes with measurement funnels and flow straighteners
• Use with a turbulence probe to measure air velocity to a high accuracy
• Automatically calculates draught risk and degree of turbulence in accordance with EN ISO 7730/ ASHRAE 55
• Fume cupboard probe for measuring air velocity in fume cupboards
• Measure laminar flow measurements in cleanrooms using the high-precision vane probe (Ø 100mm) with a low start-up speed 0.1m/s
• Measure the humidity of cleanrooms using a high-precision temperature/ humidity probe

Measuring Volume Flow in Ducts

Measuring Volume Flow at Outlets

Measuring Indoor Air Quality and Comfort Levels 

What’s Included?

• Testo 440dP Air Velocity and IAQ Tester
• 3x AA Batteries
• USB Cable
• Calibration Protocol