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Testo 435-2 Multifunction HVAC Meter

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  • Measures Lux, temperature, humidity, air flow, CO2 and more
  • Dual inputs for separate probes and radio module option
  • Save up to 10,000 readings in internal memory for later analysis

rrp £469.00

now £419.50 (Ex. VAT) £503.40 (Inc. VAT)

rrp £469.00


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  • Description

    Testo 435-2 Multifunction HVAC Meter

    The Testo 435-2 Multifunction HVAC Meter can work with a wide range of optional probes in order to measure parameters related to indoor air quality such as air temperature, humidity and CO2 concentration. These capabilities allow calculation of dew point and there is a specific user profile for assessment of IAQ. It is also possible to connect surface temperature probes, pressure probes, and air flow probes to the meter.

    Through additional optional probes, the Testo 435-2 is also capable of measuring light levels, U-value temperature, and turbulence. An optional radio module can be added to the HVAC meter so three probes can work with it simultaneously whilst there are physical inputs for two probes at once.

    The Testo 435-2 has a backlit digital display which can show multiple measurement parameters and calculations simultaneously. Minimum, maximum and timed mean readings can be shown on screen and the meter has an internal memory for 10,000 measurement values. Specific user profiles for individual parameters make the HVAC meter easy to use and it comes supplied with PC software for analysing, archiving and documenting readings. Hard copies can be produced directly from the meter with an optional Testo fast printer.

    A rugged casing made of ABS, TPE and metal gives the Testo 435-2 an IP54 ingress protection rating so it is ideally suited for use in challenging conditions. The meter benefits from a 200-hour battery life and has dimensions of 220mm x 74mm x 46mm.

    Testo part number: 0563 4352

    Key Feature

    • Temperature range: -200˚C to 1370˚C
    • Humidity range: 0 to 100%
    • Absolute pressure range: 0 to 2000hPa
    • Air flow velocity range: 0 to 60m/s
    • Ambient CO2 range: 0 to 10000ppm
    • Lux range: 0 to +100,000 Lux
    • Ideal for IAQ and HVAC
    • 10,000-reading internal storage
    • PC software included as standard
    • 200-hour battery life
  • Specification

    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


    • Measuring range: 0 to +100000 Lux
    • Accuracy: See probe data
    • Resolution: 1 Lux / 0.1 Hz


    • 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 lighting: Illuminated display
    • Storage temperature: -30 to +70 °C
    • Weight: 428 g
  • Supplied Accessories

    • Testo 435-2 Multifunction HVAC Meter
    • Software package
    • USB cable
    • Batteries
    • Calibration protocol
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  • Delivery Information

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    We use DPD/Interlink for all larger items and Royal Mail for smaller items and accessories. With DPD/Interlink you will receive a 1 hour delivery window on the day of delivery via e-mail/text and a notification 15 minutes before arrival so you will not have to wait around all day. You can even manage your booking online and re-arrange delivery for another date or arrange the goods to be left with a neighbour of your choice.

    We also offer delivery options for goods required urgently on certain products, all which are sent by DPD/Interlink.

    Our charges for UK deliveries:

    • FREE Delivery (on select products only): typically 3-5 working days*
    • Standard Delivery at £4.95: 2-3 working days
    • Next Working Day Delivery (on select products only) at £7.50
    • Pre-Noon Next Working Day Delivery (on select products only) at £9.50*
    • Pre-10.30am Next Working Day Delivery (on select products only) at £18.50*
    • Saturday Pre-Noon Delivery (on select products only) at £14.50*
    • Sunday Pre-Noon Delivery (on select products only) at £14.50*

    *UK mainland only

    NOTE! For next working day or Saturday/Sunday delivery options the order MUST be placed no later than 3pm on the working day before delivery is required. After 3pm, please arrange with our staff before selecting a priority delivery service. Priority services are available to UK mainland residents only (this might exclude certain areas in the north of Scotland).

    Customers outside the UK:

    Test-Meter.co.uk exports to many countries all over the world. Prices for shipping vary on location and weight/dimensions. Costs are calculated for certain countries at the checkout. If your country is not included in this list please e-mail admin@test-meter.co.uk with your name, address and the items you would like to order for an accurate shipping quote or go to http://www.test-meter.co.uk/test-equipment-export for more information.

    For more information on delivery, please see our terms and conditions.