Testo 435-1 Ventilation & Air Quality Instrument

$896.00
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  • Testo 435-1 Ventilation & Air Quality Instrument
  • Testo 435-1 Ventilation & Air Quality Instrument
  • Testo 435-1 Ventilation & Air Quality Instrument
  • Testo 435-1 Ventilation & Air Quality Instrument

Testo 435-1 Ventilation & Air Quality Instrument

$896.00
Loading reviews...

All prices are exclusive of GST

Part No. 0560 4351

  • You have the option of connecting thermal anemometers and vane anemometers for measuring air velocity and volumetric flow in ventilation ducts
  • Air quality: measurement of CO2, air humidity, air temperature and absolute pressure with the optional IAQ probe
  • Display of dew point distance, min., max. and mean values
  • Illuminated display

Testo 435 is a series of multi-function climate measuring instruments made by Testo. The Testo 435-1 version is the entry-level measuring instrument in this series. You can use this to carry out measurements which you need to adjust ventilation and air conditioning systems and assess air quality. For this we offer you a comprehensive range of optional probes and sensors to choose from.

Product Description
The testo 435 multi-function climate measuring instrument is available in four versions. This testo 435-1 version is the entry-level measuring instrument for adjusting and testing ventilation and air conditioning systems and for assessing air quality. You have a choice of different optional probes available for measurement, all of which can be connected to the testo 435-1.

Attachable probes (optional) for assessing air quality

  • IAQ probe (Indoor Air Quality) for assessing air quality – measures CO2, air temperature, air humidity and absolute pressure
  • Ambient CO probe for CO measurement in buildings and rooms
  • Globe thermometer for measuring radiant heat
  • Temperature probe for measuring air temperature, core temperature and surface temperature

Attachable probes (optional) for adjusting and testing ventilation and air conditioning systems

  • Thermal anemometers for measuring air velocity and volumetric flow in ventilation ducts. If you also want to measure the temperature and air humidity in ducts, we recommend you use the thermal anemometer with integrated temperature and air humidity measurement
  • Vane anemometer with a small diameter (Ø 16 mm) for measuring air velocity and volumetric flow in ventilation ducts
  • Vane anemometer with a large diameter (Ø 100 mm) for measuring volumetric flow at the air outlet, also for measurements at poppet valves and ventilation grilles in combination with the testovent 417 funnels or for measurements at swirl outlets with the volume flow straightener
  • Temperature probe for measuring air temperature, core temperature and surface temperature 
  • Absolute pressure probe

The service cases which are also available offer you space for the climate measuring instrument and your whole range of probes.

Radio probe for temperature measurements
In addition to the attachable probes, you can also connect up to three radio probes to the measuring instrument: with the radio module which is available as an option, the testo 435-1 climate measuring instrument can take temperature measurements wirelessly from radio probes over a distance of up to 20 meters (without obstruction). This enables you to avoid damage to cables or hindrances to handling.
The testo 435-2, testo 435-3 or testo 435-4 versions offer even more possibilities for adjusting and testing air conditioning systems and measuring air quality. Some of these are fitted with integrated differential pressure measurement. Furthermore, additional probes, such as lux probes or probes for turbulence level measurement, can be attached to these versions.

Complex technology, but really easy handling
The testo 435-1 multi-function climate measuring instrument is characterized by an efficient measuring process which makes any inconvenient programming of the measuring instrument superfluous:
probe-dependent menus and selectable user profiles for the typical applications of “duct measurement” and “IAQ measurement” ensure the easiest imaginable handling.
All readings are easy to read on the large display which has an illumination function. In addition, dew point distance, min., max. and mean values are displayed. A solid housing provides reliable protection against impacts for the testo 435-1 multi-function climate measuring instrument.

Documentation of measurement data on site
The testo fast printer, which is available as an option, means you can create a report printout of measurement data directly on site. For a duct measurement, you can for instance print out the current readings or the min./max. values for air velocity, volumetric flow, temperature and air humidity. You can use the printout as evidence of your work.
Use the practical cyclical printing function on the testo 435-1 as well. It not only enables the printout of individual readings, but also of whole series of measurements on the testo fast printer at freely adjustable intervals (for example once a minute).
We recommend you use the testo 435-2 or testo 435-4 versions for saving, documenting and archiving measurement data. They are equipped with a reading memory and PC software.

Delivery Scope
Testo 435-1 multi-function climate measuring instrument, including calibration protocol and batteries. 

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
Resolution 0.1 %RH

Absolute Pressure
Measuring range 0 to 2000 hPa
Accuracy See probe data

Velocity - Vane anemometer
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 anemometer
Measuring range 0 to +20 m/s
Accuracy See probe data
Resolution 0.01 m/s

Ambient CO2 (via IAQ probe)
Measuring range 0 to +10000 ppm CO₂
Accuracy See probe data
Resolution 1 ppm CO₂

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.

    • 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