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testo 435-2 - Indoor air quality meter

Order-Nr. 0563 4352
  • Comprehensive range of measuring functions using optionally available accessories – e.g. anemometers, moisture sensors, lux and degree of turbulence sensors

  • Super-size memory for up to 10 000 readings

  • Displays dew point difference, min, max and mean values

  • PC software for analyzing and logging measuring data

The testo 435-2 indoor air quality meter allows you to carry out all the measurements that are necessary to check and adjust ventilation and air conditioning systems and assess the quality of the indoor air. Select from a wide range of probes and sensors. Because it’s you know best what your meter needs to be able to do!

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Product Description

The testo 435-2 indoor air quality meter is designed to allow you to carry out all the measurements that are necessary to check and adjust ventilation and air conditioning systems and assess the quality of the indoor air.
But who knows better than you what your meter needs to be able to do? Below you will find a wide selection of optionally available probes and sensors that give you the freedom to configure your meter just the way you want it. Order your probes and sensors along with your meter now.

Connectable sensors (optional) for assessing the indoor air quality (IAQ)

  • IAQ sensor for assessing the indoor air quality using CO2, air temperature, relative humidity and absolute pressure measurements

  • Comfort sensor for degree of turbulence measurements in compliance with EN 13779 for the objective assessment of the air velocity in the relevant room

  • Globe thermometer for measuring radiation heat

  • Lux sensor for measuring illumination

  • Moisture/temperature sensor for assessing the thermal comfort in the relevant room

  • CO environmental sensor for measuring CO in rooms and buildings

  • Temperature sensor for immersion, penetration, air and surface measurements

  • Temperature sensors to determine the HTC value

Connectable sensors (optional) for checking and adjusting ventilation and air conditioning systems

  • Thermal anemometer, also with integrated temperature and relative humidity measurement function for air velocity and volume flow rate measurements in ventilation ducts

  • Impeller anemometer with small diameter (Ø 16mm) for air flow and volume flow rate measurements in ventilation ducts

  • Impeller anemometer with large diameter (Ø 100mm) for  air flow and volume flow rate measurements at air outlets in connection with the testovent 417 funnels also for carrying out measurements at disk valves and ventilation grilles or for carrying out measurements at ceiling diffusers using a volume flow rate rectifier

  • Temperature sensor for immersion, penetration, air and surface measurements

  • Moisture/temperature sensor for carrying out measurements in ventilation ducts

  • Absolute pressure sensor

In addition to the other connectable sensors, you can also connect as many as three wireless sensors to your testo 435-2 IAQ meter: the optionally available wireless module allows you to carry out wireless temperature and moisture measurements via wireless sensors across distances of up to 20 meters out in the open. This helps to ensure that the cable is not damaged and that nothing gets in your way while measuring.
There is also a separate carry case available that provides you with plenty of room for both your meter and your selection of probes and sensors.

Complex technology that could hardly be more simple

The beauty behind the testo 435-2 indoor air quality meter is that the whole measuring process can be carried out quickly and efficiently with no need for complex programming.
Sensor dependent menus and selectable user profiles for typical applications like “duct measurements” and “IAQ measurements” ensure that the meter is always ready to use. The testo 435-2 has a super-size memory that can save up to 10 000 measurements, which can be transferred to your laptop or PC via the included USB cable. The included software allows you to log, archive and clearly structure all relevant measuring data and measuring programmes, for example duct measurements. Specially adapted measurement protocols can be used to present your customers with data from duct, long-term and degree of turbulence measurements. The optionally available testo fast printer can be used to provide your customers with on-the-spot protocol print outs.
The testo 453-2 has a large, easy-to-read backlit display that shows the dew point difference along with other values including min, max and mean values. A durable protective cover protects the testo 435-2 indoor air quality meter reliably against impact.

Delivery Scope

testo 435-2 indoor air quality meter including measured value memory, PC software, USB cable, calibration protocol, batteries.

PLEASE NOTE: a sensor (not included in the scope of supply) is required to operate the meter).

Temperature - NTC

Measuring range                                 

-50 to +150 °C

Accuracy

±0.2 °C (-25 to +74.9 °C)

±0.4 °C (-50 to -25.1 °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 (-60 to +60 °C)

±(0.2 °C + 0.5 % of mv) (Remaining Range)

Resolution

0.1 °C

 

Temperature - TC Type T (Cu-CuNi)

Measuring range                                 

-200 to +400 °C

Accuracy

±0.3 °C (-60 to +60 °C)

±(0.2 °C + 0.5 % of mv) (Remaining Range)

Resolution

0.1 °C

 

Humidity - Capacitive

Measuring range                                 

0 to +100 %RH

Accuracy

See probe data

 

Absolute Pressure

Measuring range                                 

0 to +2000 hPa

Accuracy

See probe data

Resolution

0.1 hPa

 

Velocity - Vane

Measuring range                                 

0 to +60 m/s

Accuracy

See probe data

Resolution

0.01 m/s (60 + 100 mm Vane)

0.1 m/s (16 mm Vane)

 

Velocity - Hot wire

Measuring range                                 

0 to +20 m/s

Accuracy

See probe data

Resolution

0.01 m/s

 

Light

Measuring range                                 

0 to +100000 Lux

Accuracy

See probe data

Resolution

1 Lux

0.1 Hz

 

General technical data

Dimensions

220 x 74 x 46 mm

Operating temperature                                 

-20 to +50 °C

Housing

ABS / TPE / Metal

Protection class

IP54

Battery type

Alkali manganese, mignon, type AA

Battery life

200 h (typical vane measurement)

Display ligthing

Illuminated display

Storage temperature

-30 to +70 °C

Weight

428 g

Accessories


Plug-in Power supply

Plug-in mains adapter, 5 VDC 500 mA with European adapter, 100-250 VAC, 50-60 Hz

Order Number: 0554 0447


Connection hose, silicone - max. load capacity up to 700 hPa (mbar)

Order Number: 0554 0440


Connection hose

Connection hose silicone-free for differential pressure measurement, length 5 m, load up to maximum 700 hPa, (mbar)

Order Number: 0554 0453


Radio Module for measuring instrument

Radio module for measuring instrument, 869.85 MHz, approval for the countries: DE, FR, UK, BE, NL, ES, IT, SE, AT, DK, FI, HU, CZ, PL, GR, CH, PT, SI, MT, CY, SK, LU, EE, LT, IE, LV, NO

Order Number: 0554 0188


Printer and accessories


testo-Schnelldrucker IRDA mit kabelloser Infrarot-Schnittstelle

testo fast printer IRDA

Order Number: 0554 0549


Transport and Protection


testo 0516 1035 case

Service case for measuring instrument, probe and accessories, dimensions 454 x 319 x 135 mm

Order Number: 0516 1035


testo 0516 1035 case

Service case for measuring instrument, probe and accessories, dimensions 518 x 398 x 155 mm

Order Number: 0516 1435

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