Description
Product Description
Carry out measurements without any annoying cables: use the kit to handle all relevant measurements in ventilation ducts and at air/ceiling outlets. You will receive the testo 440 dP air velocity and IAQ measuring instrument including differential pressure sensor, two vane probe heads (Ø 100 mm and Ø 16 mm) and a humidity/temperature probe head – all three can be attached to the universal Bluetooth® handle supplied. To make measurements more convenient, both vane probe heads can be combined with the telescope included in the kit. The equipment can be transported safely and conveniently in the robust case.
Delivery Scope
- testo 440 dP air velocity and IAQ measuring instrument including differential pressure sensor, connection hose, 3 x AA batteries, USB cable and calibration protocol (0560 4402)
- Vane probe (Ø 100 mm) with Bluetooth® including temperature sensor (consisting of 100 mm vane probe head, handle adapter and Bluetooth® handle); bracket for testovent measurement funnel; 4 x AA batteries and calibration protocol (0635 9431)
- 16 mm vane probe head including temperature sensor and calibration protocol (0635 9570)
- Humidity/temperature probe head (Ø 12 mm) including calibration protocol (0636 9730)
- Extendable telescope (up to 1 m in length) for flow probes with a universal handle including 90° angle (0554 0960)
- Combi-case for testo 440 and multiple probes (0516 4401)
Specification
testo 440 dP - Air velocity and IAQ measuring instrument including differential pressure sensor
| 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
|
| Differential pressure (internal sensor) - Piezoresistive |
|
Measuring range
|
-150 to +150 hPa
|
|
Accuracy
|
±0.05 hPa (0 to 1.00 hPa)
±0.2 hPa + 1.5 % of mv
(1.01 to +150 hPa)
|
|
Resolution
|
0.01 hPa
|
| 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 differential pressure (internal), 1 x Temperature TC Type K
|
|
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
|
Vane probe (Ø 100 mm, digital) - with Bluetooth® including temperature sensor
| Temperature - NTC |
|
Measuring range
|
-20 to +70 °C
|
|
Accuracy
|
±0.5 °C
|
|
Resolution
|
0.1 °C
|
| Velocity / Volume flow |
|
Measuring range
|
0.3 to 35 m/s
|
|
Accuracy
|
±(0.1 m/s + 1.5 % of mv) (0.3 to 20 m/s)
±(0.2 m/s + 1.5 % of mv) (20.01 to 35 m/s)
|
|
Resolution
|
0.01 m/s
|
| General technical data |
|
Storage temperature
|
-20 to +60 °C
|
|
Weight
|
360 g
|
|
Dimensions
|
375 x 105 x 46 mm
|
|
Operating temperature
|
-5 to +50 °C
|
|
Probe head diameter
|
100 mm
|
|
Product colour
|
black/orange
|
|
Battery type
|
4 x type AA batteries
|
|
Battery life
|
60 h
|
|
Data transfer
|
Bluetooth®
|
|
Radio range
|
20 m
|
16 mm vane probe head including temperature sensor
| Temperature - NTC |
|
Measuring range
|
-10 to +70 °C
|
|
Accuracy
|
±1.8 °C
|
|
Resolution
|
0.1 °C
|
| Velocity / Volume flow |
|
Measuring range
|
0.6 to 50 m/s
|
|
Accuracy
|
±(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)
|
|
Resolution
|
0.1 m/s
|
| General technical data |
|
Storage temperature
|
-10 to +70 °C
|
|
Weight
|
60 g
|
|
Dimensions
|
245 x 16 x 16 mm
|
|
Operating temperature
|
-10 to +70 °C
|
|
Length probe shaft
|
230 mm
|
|
Diameter probe shaft
|
16 mm
|
|
Probe head diameter
|
16 mm
|
|
Product colour
|
Black
|
Humidity/temperature probe head
| Temperature - NTC |
|
Measuring range
|
-20 to +70 °C
|
|
Accuracy
|
±0.5 °C
|
|
Resolution
|
0.1 °C
|
| Humidity - Capacitive |
|
Measuring range
|
0 to 100 %RH
|
|
Accuracy
|
±2 %RH (5 to 90 %RH)
±0.03 %RH/K (k=1)
|
|
Resolution
|
0.1 %RH
|
Please see the additional accuracy information for humidity in the instruction manual.
| General technical data |
|
Storage temperature
|
-20 to +70 °C
|
|
Weight
|
30 g
|
|
Dimensions
|
160 x 28 x 28 mm
|
|
Operating temperature
|
-20 to +70 °C
|
|
Length probe shaft
|
140 mm
|
|
Diameter probe shaft
|
12 mm
|
|
Product colour
|
Black
|
Extendable telescope (up to 1 m in length) for flow probes
| General technical data |
|
Weight
|
155 g
|
|
Dimensions
|
telescope: 375 x 17 x 16 mm
angle: 65 x 65 x 15 mm
|
|
Operating temperature
|
-5 to +50 °C
|
|
Length telescope
|
1,000 mm
|
|
Diameter telescope
|
12 mm
|
|
Product colour
|
Black
|
|
Storage temperature
|
-20 to +60 °C
|
Combi-case for testo 440 and multiple probes
| General technical data |
|
Weight
|
1400 g
|
|
Dimensions
|
516 x 135 x 256 mm
|
|
Product colour
|
Black
|
Applications
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
Download
Product Brochure
Data sheet testo 440 (application/pdf, 3.365 KB)
Data sheet testo 440 delta P Air Flow ComboKit 2 with Bluetooth® (application/pdf, 660 KB)
