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testo 440 Hot Wire Kit
0563 4400testo 440 Hot Wire Kit
0563 4400Intuitive: clearly structured measurement menu for volume flow and parallel determination of air velocity, volume flow and air temperature in ventilation ducts
Convenient: integrated telescope that can be extended to 0.85 m, with scaling, makes it easy to carry out measurements
Reliable: absolute pressure compensation, internal data storage and USB port for data export
As multifaceted as your challenges themselves: the air velocity and IAQ measuring instrument can be expanded with a large portfolio of digital probes
Kit for carrying out measurements in ventilation ducts: the testo 440 air velocity and IAQ measuring instrument and the hot wire probe (Ø 9 mm) including temperature sensor are all safely stowed away in the case. So you can get down to work straight away!
- testo 440 air velocity and IAQ measuring instrument, 3 x AA batteries, USB cable and calibration protocol
- Hot wire probe (Ø 9 mm) with fixed cable (length 1.7 m) including temperature sensor, with telescope (can be extended to 0.85 m) and calibration protocol (0635 1032)
- Basic case for testo 440 and 1 probe
Temperature - NTC
| Measuring range | -40 to +150 °C |
|---|---|
| Accuracy | ±0.4 °C (-40 to -25.1 °C) ±0.4 °C (+75 to +99.9 °C) ±0.5 % of mv (Remaining Range) ±0.3 °C (-25 to +74.9 °C) |
| 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 |
| Battery type | 3 AA mignon 1.5 V |
| Battery life | 12 h (typically vane measurement) |
| Interface | Bluetooth®; USB |
| Storage temperature | -20 to +50 °C |
Temperature - NTC
| Measuring range | -20 to +70 °C |
|---|---|
| Accuracy | ±0.5 °C |
| Resolution | 0.1 °C |
Absolute Pressure
| Measuring range | +700 to +1100 hPa |
|---|---|
| Accuracy | ±3.0 hPa |
| Resolution | 0.1 hPa |
Velocity - Hot wire
| Measuring range | 0 to 30 m/s |
|---|---|
| Accuracy | ±(0.5 m/s + 5 % of mv) (0 to 20 m/s) ±(0.03 m/s + 4 % of mv) (20.01 to 30 m/s) |
| Resolution | 0.01 m/s |
General technical data
| Storage temperature | -20 to +70 °C |
|---|---|
| Weight | 90 g |
| Dimensions | 315 x 12 x 12 mm |
| Operating temperature | -20 to +70 °C |
| Cable length | 1.7 m |
| Length telescope | 850 mm |
| Probe head diameter | 9 mm |
| Diameter telescope | 12 mm |
| Product colour | Black; silver |
| Diameter probe shaft | 12 mm |
Comfort 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
:
0628 0152
0628 0152
Comfort probes
Lux probe (digital), wired: for measuring illuminance in workplaces (e.g. offices, production areas) – measuring range 0 to 100,000 lux
:
0635 0551
0635 0551
Comfort probes
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
:
0632 1551
0632 1551
Comfort probes
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
:
0632 1552
0632 1552
Comfort probes
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
:
0632 1550
0632 1550
Comfort probes
CO probe (digital) with Bluetooth®: for measuring carbon monoxide in indoor areas (e.g. boiler rooms) – measuring range 0 to 500 ppm
:
0632 1271
0632 1271
Comfort probes
CO probe (digital), wired: for measuring carbon monoxide in indoor areas (e.g. boiler rooms) – measuring range 0 to 500 ppm
:
0632 1272
0632 1272
Comfort probes
CO probe head: for attachment to universal Bluetooth® or cable handle – measuring range 0 to 500 ppm
:
0632 1270
0632 1270
Comfort probes
Globe thermometer (TC type K) for the measurement of radiant heat – measuring range 0 to + 120 °C
:
0602 0743
0602 0743
Food probes
Food probes
Waterproof stainless steel food probe (NTC) - measuring range -50 to +150 °C
:
0615 3311
0615 3311
Food probes
Frozen food probe (NTC) for screw-in use without pre-drilling - measuring range -50 to +140 °C
:
0615 3211
0615 3211
Food probes
Robust food penetration probe (NTC) - measuring range -25 to +150 °C
:
0615 2411
0615 2411
Food probes
Stainless steel food probe (NTC) - measuring range: -50 to +150 °C
:
0615 2211
0615 2211
Humidity probes
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
:
0636 9731
0636 9731
Humidity probes
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
:
0636 9732
0636 9732
Humidity probes
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
:
0636 9730
0636 9730
Humidity probes
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)
:
0636 9771
0636 9771
Humidity probes
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)
:
0636 9772
0636 9772
Humidity probes
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)
:
0636 9770
0636 9770
Humidity probes
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
:
0636 9775
0636 9775
Humidity probes
testo 605i - thermohygrometer operated via smartphone
:
0560 2605 02
0560 2605 02
Pressure probes
Pressure probes
testo 510i – differential pressure measuring instrument with smartphone operation
:
0560 1510
0560 1510
Pressure probes
testo 549i - High-pressure gauge operated via smartphone
:
0560 2549 02
0560 2549 02
Surface probes
Surface probes
Waterproof surface temperature probe (NTC) for flat surfaces - measuring range: -50 to +150 °C
:
0615 1912
0615 1912
Temperature probes
Temperature probes
testo 805i – infrared thermometer with smartphone operation
:
0560 1805
0560 1805
Temperature probes
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)
:
0615 1212
0615 1212
Temperature probes
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)
:
0615 1712
0615 1712
Temperature probes
Clamp probe (NTC temperature sensor) for measuring the surface temperature of pipes (Ø 6-35 mm) – measuring range -40 to +125 °C
:
0615 5505
0615 5505
Temperature probes
Robust air temperature probe (TC type K) – measuring range: -60 to +400 °C
:
0602 1793
0602 1793
Temperature probes
Fast-action surface probe (TC type K) – measuring range -60 to +300 °C, short-term up to +500 °C
:
0602 0393
0602 0393
Temperature probes
Fast-reaction paddle surface probe (TC type K) - Measuring range: - 0 to +300°C
:
0602 0193
0602 0193
Temperature probes
Efficient, waterproof surface probe with small measurement head for flat surfaces, T/C Type K
:
0602 0693
0602 0693
Temperature probes
Fast-action, angled surface temperature probe (TC type K) for flat and uneven surfaces – measuring range: -60 to +300 °C
:
0602 0993
0602 0993
Temperature probes
Surface temperature probe with magnet (TC type K), adhesive power 20 N – Measuring range -50 to +170°C
:
0602 4792
0602 4792
Temperature probes
Surface temperature probe with magnet (TC type K), adhesive power 10 N – Measuring range -50 to +400°C
:
0602 4892
0602 4892
Temperature probes
Waterproof surface temperature probe with widened measuring tip (TC type K) for flat surfaces – measuring range -60 to +400 °C
:
0602 1993
0602 1993
Temperature probes
Temperature probe with Velcro (TC Type K)
:
0628 0020
0628 0020
Temperature probes
Temperature probe (TC type K) with clamping bracket for measurements on pipes with Ø 5-65 mm – Measuring range -60 to +130°C, briefly up to +280°C
:
0602 4592
0602 4592
Temperature probes
Clamp probe (TC type K) for temperature measurements on pipes with Ø 15-25 mm – Measuring range -50 to +100°C, briefly up to +130°C
:
0602 4692
0602 4692
Temperature probes
Flexible, fast-action immersion probe (TC type K) – measuring range: -60 to +1000 °C
:
0602 0593
0602 0593
Temperature probes
Fast-action immersion/penetration probe (TC type K) – measuring range: -60 to +800 °C
:
0602 2693
0602 2693
Temperature probes
Immersion measuring tip with TC plug type K - for fast temperature measurements
:
0602 5792
0602 5792
Temperature probes
Flexible immersion measuring tip (TC type K) - Measuring range: -40 to +1000°C
:
0602 5693
0602 5693
Temperature probes
Waterproof immersion/penetration probe (TC type K) – measuring range -60 to +400 °C
:
0602 1293
0602 1293
Temperature probes
Exceptionally fast temperature probe (TC Type K)
:
0602 0493
0602 0493
Temperature probes
Waterproof stainless steel food probe (TC type K) - measuring range: -60 to +400°C
:
0602 2292
0602 2292
Temperature probes
Flexible thermoelectric couple (TC type K, glass fibre) – Measuring range: -50 to +400°C
:
0602 0644
0602 0644
Temperature probes
Flexible thermoelectric couple (TC type K, glass fibre) – measuring range -50 to +400°C
:
0602 0645
0602 0645
Temperature probes
Flexible thermoelectric couple (TC type K, PTFE) – measuring range -50 to +250°C
:
0602 0646
0602 0646
Temperature probes
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
:
0618 0071
0618 0071
Temperature probes
Robust, fast-action air probe (digital)
:
0618 0072
0618 0072
Temperature probes
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
:
0618 0073
0618 0073
Temperature probes
Glass-coated laboratory probe (Pt100 temperature sensor, digital) for temperature measurements in aggressive media – measuring range -50 to +400 °C
:
0618 7072
0618 7072
Temperature probes
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
:
0618 0275
0618 0275
Temperature probes
Pipe wrap probe (NTC temperature sensor) for measuring the surface temperature of pipes (Ø 5-65 mm) – measuring range -60 to +130 °C
:
0615 5605
0615 5605
Temperature probes
testo 115i - Clamp thermometer operated via smartphone
:
0560 2115 02
0560 2115 02
Velocity
Velocity
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
:
0635 1571
0635 1571
Velocity
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
:
0635 1572
0635 1572
Velocity
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
:
0635 1570
0635 1570
Velocity
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
:
0635 9571
0635 9571
Velocity
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
:
0635 9572
0635 9572
Velocity
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
:
0635 9570
0635 9570
Velocity
Hot wire probe (digital) including temperature sensor, wired: for measurements in ventilation ducts – measuring range 0 to 30 m/s, -20 to +70 °C
:
0635 1032
0635 1032
Velocity
Vane probe (Ø 16 mm, digital), wired: for measurements in ventilation ducts – measuring range +0.6 to +50 m/s
:
0635 9532
0635 9532
Velocity
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
:
0635 1052
0635 1052
Velocity
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
:
0635 9371
0635 9371
Velocity
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
:
0635 9372
0635 9372
Velocity
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
:
0635 9370
0635 9370
Velocity
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
:
0635 9431
0635 9431
Velocity
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
:
0635 9432
0635 9432
Velocity
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
:
0635 9430
0635 9430
Velocity
testo 405i – thermal anemometer with smartphone operation
:
0560 1405
0560 1405
Velocity
testo 410i – vane anemometer with smartphone operation
:
0560 1410
0560 1410
Velocity
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
:
0635 1026
0635 1026
Velocity
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
:
0635 1051
0635 1051
Sets
Sets
testo 440 Hot Wire Kit: for measuring air velocity, volume flow and temperature in ventilation ducts with a hot wire probe
:
0563 4400
0563 4400
Sets
testo 440 16 mm Vane Kit: for measuring air velocity and volume flow in ventilation ducts with a vane probe (Ø 16 mm)
:
0563 4401
0563 4401
Sets
testo 440 Lux Kit for measuring the illuminance in workplaces with a lux probe
:
0563 4402
0563 4402
Sets
testo 440 100 mm Vane Kit with Bluetooth®: for measuring air velocity, volume flow and temperature at air outlets
:
0563 4403
0563 4403
Sets
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
:
0563 4404
0563 4404
Sets
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
:
0563 4405
0563 4405
Sets
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)
:
0563 4406
0563 4406
Sets
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)
:
0563 4407
0563 4407
Sets
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)
:
0563 4408
0563 4408
Sets
testo 440 laboratory kit: for measuring the temperature in aggressive media with Pt100 laboratory probe
:
0563 4412
0563 4412
Accessories
Accessories
BLUETOOTH®-/IRDA printer with Bluetooth® and IrDA interface for printing out measurement data and graphs from compatible Testo measuring instruments or Testo Apps
:
0554 0621
0554 0621
Accessories
Measuring tripod for IAQ and comfort level measurements, to ensure standard-compliant, secure positioning of measuring instrument and probes including transport bag
:
0554 1591
0554 1591
Accessories
Measuring tripod for flow measurements, for standard-compliant and secure positioning of probes
:
0554 1592
0554 1592
Accessories
Bluetooth® handle for connecting probe heads: transmits readings conveniently via Bluetooth
:
0554 1111
0554 1111
Accessories
Cable handle for connecting probe heads: transmits readings via cable
:
0554 2222
0554 2222
Accessories
testovent 417 flow straightener set for volume flow measurement, consisting of the testovent 417 volume flow straightener and the testovent 417 funnel set
:
0554 4173
0554 4173
Accessories
testovent 417 funnel set for volume flow measurement, consisting of a funnel for plate outlets (Ø 200 mm) and a funnel for ventilation grilles (330 x 330 mm), used with 100 mm vane
:
0563 4170
0563 4170
Accessories
Flow straightener testovent 417
:
0554 4172
0554 4172
Accessories
testo 318 - Endoscope
:
0563 3185
0563 3185
Accessories for measuring instrument
Accessories for measuring instrument
USB mains unit incl. cable
:
0554 1105
0554 1105
Certificates
Certificates
ISO flow calibration certificate for hot wire and vane anemometers; with 4 measuring points: 0.3 / 0.5 / 0.8 / 1.5 m/s
:
0520 0024
0520 0024
Certificates
ISO flow calibration certificate for hot wire anemometers, vane anemometers and Pitot tubes; with 4 measuring points: 1 / 2 / 5 / 10 m/s
:
0520 0004
0520 0004
Certificates
ISO flow calibration certificate for hot wire anemometers, vane anemometers and Pitot tubes; with 4 measuring points: 5 / 10 / 15 / 20 m/s
:
0520 0034
0520 0034
Certificates
DAkkS flow calibration certificate for hot wire anemometers, vane anemometers and Pitot tubes; with 5 measuring points: 0.5 / 1 / 2 / 5 / 10 m/s
:
0520 0244
0520 0244
Certificates
DAkkS flow calibration certificate for hot wire anemometers, vane anemometers and Pitot tubes; with 5 measuring points: 0.5 / 1 / 2 / 5 / 10 m/s
:
0520 0204
0520 0204
Certificates
DAkkS calibration certificate for flow for anemometers and Pitot tubes; calibration at 3 measuring points: 2.5 / 5 / 10 m/s
:
0520 0254
0520 0254
Certificates
DAkkS flow calibration certificate for hot wire and vane anemometers; with 5 measuring points: 0.1 / 0.2 / 0.5 / 0.8 / 1 m/s
:
0520 0224
0520 0224
Certificates
ISO calibration certificate for flow; calibration at selectable measuring points between 0.5 and 27 m/s
:
0520 0104
0520 0104
Certificates
DAkkS calibration certificate for flow; calibration at selectable measuring points between 0.1 and 68 m/s
:
0520 0214
0520 0214
Transport and Protection
Transport and Protection
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
:
0516 4401
0516 4401
Transport and Protection
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
:
0516 4900
0516 4900
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.
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.
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
- Data sheet testo 440(pdf, 3.12 MB)
- Data sheet testo 440 Hot Wire Kit(pdf, 374.97 kB)
- Instruction manual testo 440(pdf, 1.63 MB)
- Firmware update testo 440(v1.0.8, 3.15 MB)see instruction manual for instructions on how to update your device