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testo 440 - Hot wire kit (Ø 0.35")

Order-Nr. 0563 4400

Where to buy

1-484-773-0111

Inquiry

A measuring instrument for all climate-related parameters
Intuitive: clearly structured measurement menu for volume flow and determination of air velocity in ventilation ducts
Convenient: integrated telescope that can be extended to 0.85 m, with scaling, makes it easy to carry out measurements
Extendible with a wide range of probes
Analytical software for creating professional reports and measurement data management
Digital probes eliminate any additional measurement uncertainty of the measuring instrument

A measuring instrument for all climate-related parameters

Details

Product Description

This testo 440 kit is great for carrying out measurements in ventilation ducts. The testo 440 air velocity and IAQ measuring instrument and its hot wire probe (Ø 0.35") with temperature sensor can all be safely stored in the included case.

Details on kit components

testo 440 - Air velocity and IAQ measuring instrument

Order-Nr. 0560 4401
- A measuring instrument for all climate-related parameters
- Extendible with a wide range of probes
Details
Hot wire probe (digital) - including temperature sensor, wired

Order-Nr. 0635 1032
- Intuitive: clearly structured measurement menu for volume flow and parallel determination of air velocity, volume flow and air temperature
- Precise: automatic absolute pressure compensation guarantees accurate measurement results
Details

Delivery Scope

testo 440 air velocity and IAQ measuring instrument, 3 AA batteries, USB cable, and calibration protocol (0560 4401)
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)
Basic case for testo 440 and 1 probe

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Order-Nr. 0560 1405
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testo 425 - Digital hot wire anemometer with App connection

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testo 440 - Air flow ComboKit 1 with Bluetooth

Order-Nr. 0563 4406
- 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
Details
testo 440 - Hot wire kit (Ø 0.35")

Order-Nr. 0563 4400
- A measuring instrument for all climate-related parameters
- Intuitive: clearly structured measurement menu for volume flow and determination of air velocity in ventilation ducts
Details

Technical Data

testo 440 - Air velocity and IAQ measuring instrument

Order-Nr. 0560 4401

Temperature - NTC
Measuring range	-40° to 302 °F / -40 to +150 °C
Accuracy	±0.7 °F (-40° to -13.2 °F) / ±0.4 °C (-40 to -25.1 °C) ±0.5 °F (-13° to 166.8 °F) / ±0.3 °C (-25 to +74.9 °C) ±0.7 °F (167° to 211.8 °F) / ±0.4 °C (+75 to +99.9 °C) ±0.5 % of mv (Remaining Range)
Resolution	0.1 °F / 0.1 °C

Temperature - NTC

Measuring range

-40° to 302 °F / -40 to +150 °C

Accuracy

±0.7 °F (-40° to -13.2 °F) / ±0.4 °C (-40 to -25.1 °C)

±0.5 °F (-13° to 166.8 °F) / ±0.3 °C (-25 to +74.9 °C)

±0.7 °F (167° to 211.8 °F) / ±0.4 °C (+75 to +99.9 °C)

±0.5 % of mv (Remaining Range)

Resolution

0.1 °F / 0.1 °C

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
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

Hot wire probe (digital) - including temperature sensor, wired

Order-Nr. 0635 1032

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
Measuring range	+280 to +440 InH₂O / +700 to +1100 hPa
Accuracy	±1.2 InH₂O / ±3.0 hPa
Resolution	0.1 InH₂O / 0.1 hPa

Velocity - Hot wire anemometer
Measuring range	0 to 5906 fpm / 0 to 30 m/s
Accuracy	±(5.91 fpm + 4 % of mv) / ±(0.03 m/s + 4 % of mv) (0 to 3937 fpm) / (0 to 20 m/s) ±(98.4 fpm + 5 % of mv) / ±(0.5 m/s + 5 % of mv) (3938.98 to 5906 fpm) / (20.01 to 30 m/s)
Resolution	1.97 fpm / 0.01 m/s

Velocity - Hot wire anemometer

Measuring range

0 to 5906 fpm / 0 to 30 m/s

Accuracy

±(5.91 fpm + 4 % of mv) / ±(0.03 m/s + 4 % of mv)

(0 to 3937 fpm) / (0 to 20 m/s)

±(98.4 fpm + 5 % of mv) / ±(0.5 m/s + 5 % of mv)

(3938.98 to 5906 fpm) / (20.01 to 30 m/s)

Resolution

1.97 fpm / 0.01 m/s

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.
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

Probes

Comfort probes

Turbulence probe (digital), wired: for determining the degree of turbulence and draught risk according to EN ISO 7730 / ASHRAE 55 – measuring range 0 to +5 m/s, 0 to +50 °C

Order Number: 0628 0152

Lux probe (digital) for measuring illuminance, wired

Lux probe (digital), wired: for measuring illuminance in workplaces (e.g. offices, production areas) – measuring range 0 to 100,000 lux

Order Number: 0635 0551

CO2 probe (digital) with Bluetooth® including temperature and humidity sensor

CO₂ probe (digital) with Bluetooth^® including temperature and humidity sensor: for measuring the indoor air quality in offices, production areas or storage facilities – measuring range 0 to 10,000 ppm, -10 to +50 °C, 5 to 95% RH

Order Number: 0632 1551

CO2 probe (digital) including temperature and humidity sensor, wired

CO₂ probe (digital) including temperature and humidity sensor, wired: for measuring the indoor air quality in offices, production areas or storage facilities – measuring range 0 to 10,000 ppm, -10 to +50 °C, 5 to 95% RH

Order Number: 0632 1552

CO2 probe head including temperature and humidity sensor

CO₂ probe head including temperature and humidity sensor: for attachment to universal Bluetooth^® or cable handle – measuring range 0 to 10,000 ppm, -10 to +50 °C, 5 to 95% RH

Order Number: 0632 1550

CO probe (digital) with Bluetooth^®: for measuring carbon monoxide in indoor areas (e.g. boiler rooms) – measuring range 0 to 500 ppm

Order Number: 0632 1271

CO probe (digital), wired: for measuring carbon monoxide in indoor areas (e.g. boiler rooms) – measuring range 0 to 500 ppm

Order Number: 0632 1272

CO probe head: for attachment to universal Bluetooth^® or cable handle – measuring range 0 to 500 ppm

Order Number: 0632 1270

Globe-Thermometer ~ 150 mm, TE Typ K, zum Messen der Strahlung

Globe probe Ø 5.9"

Order Number: 0602 0743

Humidity probes

Humidity/temperature probe (digital) with Bluetooth^®: for measurements in rooms, ventilation ducts, refrigeration systems and heat pumps – accuracy ±2% RH / ±0.5 °C, measuring range 0 to 100% RH / -20 to +70 °C

Order Number: 0636 9731

Humidity/temperature probe (digital), wired: for measurements in rooms, ventilation ducts, refrigeration systems and heat pumps – accuracy ±2% RH / ±0.5 °C, measuring range 0 to 100% RH / -20 to +70 °C

Order Number: 0636 9732

Humidity/temperature probe head: for attachment to universal Bluetooth^® or cable handle – accuracy ±2% RH / ±0.5 °C, measuring range 0 to 100% RH / -20 to +70 °C

Order Number: 0636 9730

High-precision humidity/temperature probe (digital) with Bluetooth^®: for measurements in cleanrooms and laboratories, and critical processes in the pharmaceutical, industrial and food sectors, as well as in storage, refrigerated and work rooms or in air conditioning/ventilation ducts - accuracy: ±(0.6% RH + 0.7 % of m.v.) (0 to 90% RH) / ±0.3 °C (+15 to +30 °C)

Order Number: 0636 9771

High-precision humidity/temperature probe (digital), wired: for measurements in cleanrooms and laboratories, and critical processes in the pharmaceutical, industrial and food sectors, as well as in storage, refrigerated and work rooms or in air conditioning/ventilation ducts - accuracy: ±(0.6% RH + 0.7 % of m.v.) (0 to 90% RH) / ±0.3 °C (+15 to +30 °C)

Order Number: 0636 9772

High-precision humidity/temperature probe head: for attachment to a universal Bluetooth^® or cable handle – accuracy: ±(0.6% RH + 0.7 % of m.v.) (0 to 90% RH) / ±0.3 °C (+15 to +30 °C)

Order Number: 0636 9770

Robust humidity/temperature probe (digital) for temperatures up to +180 °C, wired: for measurements in industrial exhaust air, in bulk materials and in climatic test cabinets – accuracy ±2% RH (2.1 to 98% RH) / ±0.4 °C (0.1 to +50 °C), measuring range 0 to 100% RH / -20 to +180 °C

Order Number: 0636 9775

Order Number: 0560 2605 03

Pressure Probe

testo 510i – differential pressure measuring instrument with smartphone operation

Order Number: 0560 1510

Order Number: 0560 2549 03

Temperature probes

testo 805i – infrared thermometer with smartphone operation

Order Number: 0560 1805

$ 136.00

excl. tax

Waterproof immersion/penetration probe with NTC temperature sensor

Waterproof immersion/penetration probe (NTC temperature sensor) for temperature measurements in liquids and semi-solid media – measuring range -50 to +150 °C, accuracy ±0.2 °C (-25 to +74.9 °C)

Order Number: 0615 1212

Robust air probe with NTC temperature sensor

Robust air probe (NTC temperature sensor) with a short response time, for measuring air temperature – measuring range -50 to +125 °C, accuracy ±0.2 °C (-25 to +80 °C)

Order Number: 0615 1712

Clamp probe with NTC temperature sensor for measurements on pipes (Ø 6-35 mm)

Clamp probe (NTC temperature sensor) for measuring the surface temperature of pipes (Ø 6-35 mm) – measuring range -40 to +125 °C

Order Number: 0615 5505

Rugged air probe, T/C Type K

Order Number: 0602 1793

Fast-action surface probe with sprung thermocouple strip

Fast-action surface probe with spring thermocouple , for uneven surfaces, short-term range to +932°F, T/C Type K

Order Number: 0602 0393

Fast-reaction paddle surface probe, for measurements in inaccessible places, e.g. narrow apertures and slots, TC Type K

Order Number: 0602 0193

Efficient, waterproof surface probe with small measurement head for flat surfaces, T/C Type K

Order Number: 0602 0693

Fast-action surface probe with spring thermocouple for uneven surfaces, short-term to +932°F, T/C Type K

Order Number: 0602 0993

Flat head surface probe with telescopic handle max. 680 mm

Flat head surface probe with telescopic handle (max. 24 in.) for hard-to-reach areas, T/C Type K

Order Number: 0602 2394

Magnetic probe (TC type K) - for surface temperatures

Magnetic probe, adhesive force approx. 20 N, with magnets, for measurements on metal surfaces

Order Number: 0602 4792

Magnetfühler, Haftkraft ca. 10 N, mit Haft-Magneten

Surface temperature probe with magnet (TC type K), adhesive power 10 N – Measuring range -50 to +400°C

Order Number: 0602 4892

Waterproof surface probe with widened measurement tip

Waterproof surface probe with widenend measurement tip for flat surfaces, T/C Type K

Order Number: 0602 1993

Temperature probe with Velcro (TC Type K)

Order Number: 0628 0020

Pipe wrap probe for pipe diameter 5 to 65 mm

Pipe clamp probe for pipe diameter 0.2 to 2.5'', with replaceable measuring head. Measuring range to 536 °F short-term

Order Number: 0602 4592

Clamp probe for measurements on pipes, pipe diameter 0.6 to 1'' (max. 1''), meas. range to +266 °F short-term

Order Number: 0602 4692

Efficient and fast-action immersion probe, waterproof, T/C Type K

Order Number: 0602 0593

Fast-action, waterproof immersion/penetration probe

Super-quick, waterproof immersion/penetration probe, T/C Type K

Order Number: 0602 2693

Immersion tip, flexible
Measuring range: -328° to 1832 °F (-200° to 1000 °C)

Order Number: 0602 5792

Immersion tip, flexible

Order Number: 0602 5793

Immersion measurement tip, flexible, for measurements in air

Flexible immersion measurement tip for measurements in air/exhaust gases (not suitable for measurements in smelters), TC Type K -104 to +1832 °F, 39" long, Ø 0.12"

Order Number: 0602 5693

Waterproof immersion/penetration probe, TC Type K

Waterproof immerstion/penetration probe, T/C Type K

Order Number: 0602 1293

Flexible, low-mass immersion measurement tip, ideal for measurements in small volumes such as petri dishes, or for surface measurements (e.g. attached with adhesive tape), TC Type K

Order Number: 0602 0493

Wasserdichter Lebensmittelfühler aus Edelstahl (IP65)

Waterproof food probe made of stainless steel (IP65)

Order Number: 0602 2292

Thermocouple with TC adapter, flexible, 800 mm long

Thermocouple with T/C adapter, flexible, 32 in. long, fibre glass, T/C Type K

Order Number: 0602 0644

Thermocouple with TC adapter, flexible, length 1500 mm

Thermocouple with T/C adapter, flexible, 60 in. long, fibre glass, T/C Type K

Order Number: 0602 0645

Thermocouple with TC adapter, flexible, 1500 mm long, PTFE

Thermocouple with T/C adapter, flexible, 60 in. long, PTFE, T/C Type K

Order Number: 0602 0646

Flexible temperature probe (digital) with Pt100 temperature sensor: for temperature measurements in locations that are difficult to access and in liquids – measuring range -100 to +260 °C

Order Number: 0618 0071

Robust, fast-action air probe (digital)

Order Number: 0618 0072

Immersion/penetration probe (digital) with Pt100 temperature sensor: for temperature measurements in liquids and pastes – measuring range -100 to +400 °C, accuracy up to ±0.15 °C

Order Number: 0618 0073

Glass-coated laboratory probe (Pt100 temperature sensor, digital) for temperature measurements in aggressive media – measuring range -50 to +400 °C

Order Number: 0618 7072

High-precision immersion/penetration probe (digital)

High-precision immersion/penetration probe (Pt100 temperature sensor, digital) for temperature measurements in liquids and pastes – measuring range -80 to +300 °C, accuracy up to ±0.05 °C

Order Number: 0618 0275

Order Number: 0560 2115 03

Velocity Probe

Hot wire probe (digital) with Bluetooth^®including temperature and humidity sensor: for measurements in ventilation ducts – measuring range 0 to +50 m/s, -20 to +70 °C, 5 to 95% RH

Order Number: 0635 1571

Hot wire probe (digital) including temperature and humidity sensor, wired: for measurements in ventilation ducts – measuring range 0 to +50 m/s, -20 to +70 °C, 5 to 95% RH

Order Number: 0635 1572

Hot wire probe head including temperature and humidity sensor: for attachment to extendable telescope for air velocity probes with universal handle – measuring range 0 to +50 m/s, -20 to +70 °C, 5 to 95% RH

Order Number: 0635 1570

Vane probe (Ø 16 mm, digital) with Bluetooth® including temperature sensor: for measurements in ventilation ducts – measuring range +0.6 to +50 m/s, -10 to +70 °C

Order Number: 0635 9571

Vane probe (Ø 16 mm, digital) including temperature sensor, wired: for measurements in ventilation ducts – measuring range +0.6 to +50 m/s, -10 to +70 °C

Order Number: 0635 9572

16 mm vane probe head including temperature sensor; for attachment to extendable telescope for air velocity probes with universal handle – measuring range +0.6 to +50 m/s, -10 to +70 °C

Order Number: 0635 9570

Hot wire probe (digital) including temperature sensor, wired: for measurements in ventilation ducts – measuring range 0 to 30 m/s, -20 to +70 °C

Order Number: 0635 1032

Vane probe (Ø 16 mm, digital), wired: for measurements in ventilation ducts – measuring range +0.6 to +50 m/s

Order Number: 0635 9532

Fume cupboard probe (digital), wired: for measuring inflow speed and exhaust air volume flow in fume cupboards according to DIN EN 14175-3/-4 – measuring range 0 to 5 m/s, 0 to +50 °C

Order Number: 0635 1052

High-precision vane probe (Ø 100 mm, digital) with Bluetooth^® including temperature sensor: for measurements at air outlets in cleanrooms and at plate outlets, ventilation grilles or swirl outlets – measuring range +0.1 to +15 m/s, -20 to +70 °C

Order Number: 0635 9371

High-precision vane probe (Ø 100 mm, digital) including temperature sensor, wired: for measurements at air outlets in cleanrooms, as well as at plate outlets, ventilation grilles or swirl outlets – measuring range +0.1 to +15 m/s, -20 to +70 °C

Order Number: 0635 9372

High-precision 100 mm vane probe head including temperature sensor: for attachment to extendable telescope for air velocity probes with universal handle or to a universal Bluetooth^® or cable handle – measuring range +0.1 to +15 m/s, -20 to +70 °C

Order Number: 0635 9370

Vane probe (Ø 100 mm, digital) with Bluetooth^® including temperature sensor: for measurements at ceiling/air outlets and at plate outlets, ventilation grilles or swirl outlets – measuring range +0.3 to +35 m/s, -20 to +70 °C

Order Number: 0635 9431

Vane probe (Ø 100 mm, digital) including temperature sensor, wired: for measurements at ceiling/air outlets and at plate outlets, ventilation grilles or swirl outlets – measuring range +0.3 to +35 m/s, -20 to +70 °C

Order Number: 0635 9432

100 mm vane probe head: for attachment to extendable telescope for air velocity probes with universal handle or to universal Bluetooth^® or cable handle – measuring range +0.3 to +35 m/s, -20 to +70 °C

Order Number: 0635 9430

testo 405i – thermal anemometer with smartphone operation

Order Number: 0560 1405

testo 410i – vane anemometer with smartphone operation

Order Number: 0560 1410

$ 155.00

excl. tax

Hot wire probe (Ø 7.5 mm, digital), incl. temperature sensor, fixed cable: for measurement in ventilation ducts, at plate outlets, ventilation grilles – measuring range 0 to 20 m/s, -20 to +70 °C

Order Number: 0635 1026

$ 702.00

excl. tax

Hot ball probe (Ø 3 mm, digital), incl. temperature sensor, fixed cable: for measurement in non-directional air flows – measuring range 0 to 10 m/s, -20 to +70 °C

Order Number: 0635 1051

$ 915.00

excl. tax

Sets

testo 440 Hot Wire Kit: for measuring air velocity, volume flow and temperature in ventilation ducts with a hot wire probe

Order Number: 0563 4400

testo 440 16 mm Vane Kit: for measuring air velocity and volume flow in ventilation ducts with a vane probe (Ø 16 mm)

Order Number: 0563 4401

testo 440 100 mm Vane Kit with Bluetooth^®: for measuring air velocity, volume flow and temperature at air outlets

Order Number: 0563 4403

testo 440 Humidity Kit with Bluetooth^®: for measuring humidity and temperature in storage, refrigerated and work rooms, in ventilation ducts and also on refrigeration systems and heat pumps using the humidity/temperature probe with Bluetooth

Order Number: 0563 4404

testo 440 CO₂ Kit with Bluetooth^®: for measuring CO₂ concentration, humidity and temperature in indoor areas and for evaluating the indoor air quality (IAQ) with a CO₂ probe

Order Number: 0563 4405

testo 440 Air Flow ComboKit 1 with Bluetooth®t 1 with Bluetooth

testo 440 Air Flow ComboKit 1 with Bluetooth^®: for measuring air velocity, volume flow and temperature in ventilation ducts (with Ø 9 mm hot wire probe) and at air outlets (with Ø 100 mm vane probe)

Order Number: 0563 4406

testo 440 Air Flow ComboKit 2 with Bluetooth®

testo 440 flow combo-kit 2 with Bluetooth^®: for measuring flow, volume flow and temperature in ventilation ducts (with Ø 16 mm vane probe) and at air outlets (with Ø 100 mm vane probe)

Order Number: 0563 4407

testo 440 Indoor Comfort ComboKit with Bluetooth^®: for evaluating the indoor air quality (CO₂ concentration, temperature and humidity) with CO₂ probe and for determining the degree of turbulence and draught risk in workplaces according to EN ISO 7730 / ASHRAE 55 (with turbulence probe)

Order Number: 0563 4408

Accessories

BLUETOOTH®-/IRDA printer with Bluetooth® and IrDA interface for printing out measurement data and graphs from compatible Testo measuring instruments or Testo Apps

Order Number: 0554 0621

$ 577.00

excl. tax

Measuring tripod for IAQ and comfort level measurements, to ensure standard-compliant, secure positioning of measuring instrument and probes including transport bag

Order Number: 0554 1591

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

Order Number: 0554 1592

USB power supply including cable

Order Number: 0554 1105

Universal Bluetooth® handle for connecting probe heads

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

Order Number: 0554 1111

Universal cable handle for connecting probe heads

Cable handle for connecting probe heads: transmits readings via cable

Order Number: 0554 2222

testovent 417 volume flow straightener set

Flow straigthener set testovent 417 consisting of funnel set testovent 417 and flow straigthener testovent 417

Order Number: 0554 4173

The flow funnel kit is an optional kit for the testo 417, and can be used with the vane attachment of the testo 435. The flow funnel is ideal for measurements below 50 CFM. The funnel kit Includes an 8 inch round and 13 inch square funnel, ensuring proper measurements for a variety of ducts.

Order Number: 0563 4170

Flow straightener testovent 417

Order Number: 0554 4172

testovent 410, volume flow funnel, incl. case

Order Number: 0554 0410

testovent 415, volume flow funnel, Ø 8.2 in./7.4x7.4 in., incl. case

Order Number: 0554 0415

Transport Case

Combi-case for testo 440 and multiple probes; for protecting and transporting the testo 440 (dP) air velocity and IAQ measuring instrument and multiple probes

Order Number: 0516 4401

$ 113.00

excl. tax

Service case for volume flow measurement; for protecting and transporting the testo 440 (dP) air velocity and IAQ measuring instrument, probes and accessories for measuring volume flow

Order Number: 0516 4900

$ 297.00

excl. tax

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.

Volumetric flow measurement in ventilation ducts with vane probe (Ø 16 mm) and testo 440

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).

Measure CO2 concentration for assessing indoor air quality with CO2 probe and testo 440

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.

Determining the degree of turbulence with turbulence probe and testo 440

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

Volumetric flow measurement in fume cupboards with fume cupboard probe and testo 440

Downloads

Product Brochures

Manuals

Software

Firmware update testo 440 (v1.0.8, application/octet-stream, 3.228 KB) see instruction manual for instructions on how to update your device

Where to buy

1-484-773-0111

Inquiry