Testo 435-2 Indoor Air Quality Meter

$1,137.00
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  • Testo 435-2 Indoor Air Quality Meter
  • Testo 435-2 Indoor Air Quality Meter
  • Testo 435-2 Indoor Air Quality Meter
  • Testo 435-2 Indoor Air Quality Meter
  • Testo 435-2 Indoor Air Quality Meter

Testo 435-2 Indoor Air Quality Meter

$1,137.00
Loading reviews...

All prices are exclusive of GST

Part No. 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!

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

Please contact us directly for probe options to find the correct probe for your application. Ph: 09 579 1990 or email: sales@eurotec.co.nz

Flow measurement in the ventilation duct using a thermal anemometer and vane anemometer
Testo offers compact anemometer probes and pitot tubes for measuring the flow and volumetric flow in the ventilation duct.

Selecting a suitable probe or measuring instrument depends on the flow velocity in the ventilation duct. This can be broken down into three sub-ranges:

  • Low flow velocities: 0 to 5 m/s => thermal anemometers and thermal probes are suitable for this (order no. 0635 1535, 0635 1025)
  • Medium flow velocities: 5 to 40 m/s => best results are achieved by the 16 mm vane anemometer und Flügelrad-Sonden (order no. 0635 9535)
  • High flow velocities: 40 70 100 m/s => the pitot tube provides the best prerequisites (see following application)

The flow sensors for duct measurement are all equipped with telescopes making them easy to use in large air ducts. Air temperature and humidity can also be measured with the same probe as the flow velocity if required. According to the required application, choose between a thermal probe, vane probe or pitot tube for measuring the flow measurement in the duct. 

Measurement of the air and surface temperature
For human beings to be comfortable and perform at their best, it is crucial that the rooms they occupy are correctly air conditioned. As well as the structural conditions and personal perception, the following factors also contribute significantly to the existence of a pleasant indoor climate: the indoor air and surface temperature of walls, windows, floors and ceilings.

There is a range of optional temperature probes available for the testo 435. Our temperature probes with a sprung cross-band sensor element for measurement on surfaces are outstanding. The sprung cross-band sensor element fits on any surface, taking the actual temperature of the measured object in just a few seconds (for example the fast-reaction surface probe, order no. 0602 0393).

In order to allow a fast measurement of air temperature, the temperature sensor is free in our air probes (e.g. precise, robust NTC probe 0613 1712). Immersion/penetration probes can also be used for measurements in air. However, the response time is then about 40 to 60 times higher than the indicated value which was measured in water

Measurement of indoor air quality (CO2)
Bad indoor air quality due to high concentrations of CO2 can cause tiredness, lack of concentration and even illness. Therefore, to ensure sufficient indoor air quality the CO2 concentration should generally not exceed 1 000 ppm. Values of 700 to 1 500 ppm can be viewed as the "reference range".

The IAQ probe (order no. 0632 1535) is particularly suitable for monitoring indoor air quality controls. This probe can be used to record CO2, temperature and relative humidity at the same time.

U-value measurement
When redeveloping or renovating old buildings, it is crucial to be able to determine quickly if heat is being lost through the windows and walls. Only then can energy costs be reduced and redevelopment measures carried out efficiently.

When assessing thermal transmission, e.g. in old buildings in need of renovation, the U-value is one of the most important values. It enables thermal assessment, e.g. leaks or the smallest air flows at windows.

3 temperature values are required for calculating the U-value:

  • Outside temperature
  • Surface temperature of the internal wall
  • Indoor air temperature

A radio probe is needed to determine the U-value (order number: 0614 1635); this is placed in position outside. It transmits the readings to the measuring instrument inside. To measure the surface temperature the three wires of the U-value probe are attached to the wall with plasticine. The air temperature is recorded by a sensor located on the probe plug. The measuring instrument testo 435-2 automatically calculates the U-value from the three values and shows this on the display. The advantage: there is no need for manual calculation; the result is quick and accurate.

In short, the testo 435-2 allows you to calculate the U-value quickly and accurately, as well as measure parameters for air conditioning, ventilation, and indoor air quality.

    • Domestic Shipping Rates:

      • NZ Standard Shipping $10
      • Heavy Good Shipping $20
      • Chatham and Stewart Islands $50
      • FREE shipping when you spend over $300

      Important note: Please provide a physical address for delivery. We do not deliver to PO Boxes or Parcel Pods.

       

    • Testo Instruments New Zealand
      C/- Eurotec Ltd
      750C Great South Road
      Penrose
      Auckland 1061

      Ph: 09 579 1990
      Email: sales@eurotec.co.nz