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Probe for measuring indoor air quality

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THE testo 435 probe has the ability to analyse and adjust indoor air quality (IAQ), and measure the parameters of CO2, % relative humidity, and indoor air temperature. Pressure and indoor air speed can also be measured.

The new Lux probe measures the light conditions in the place of work and also the repetition frequency of screen monitors. Dew-point excess and mould growth are examined with the surface probe and the air humidity probe.

Volume flow measurement

Temperature and humidity measurement are integrated in the probe. Flow speed, volume flow, air humidity, and air temperature, can thus be measured in one test run.

Different measurement principles can be used depending on flow speed and application:

* Hot wire probe (0 - 20m/s) for precise measurement of low speeds;

* 16mm vane probe (0.6 - 40m/s) broad measuring range;

* 60mm vane probe (0.25 - 20m/s) for integrating measurement, e.g. at ducts;

* integrated differential pressure probe; simple Pitot tube measurement, ideal for high air speeds and impure air.

Testo 445 is simple and efficient to use. The instruments can alternate between user profiles, similarly to a mobile phone, for the applications channel measurement and IAQ measurement.

The measurement reports provide the customer with the data from channel measurement, long-term measurement and turbulence measurement. The company logo can be integrated into the form.

With the testo 435, rated IP54, testo provides a robust and available instrument. A carrying strap enables safe transportation and a magnet ensures good handling during flow measurement.

The testo 435 is available in four versions. Depending on the demands of the application, it is offered with or without built-in differential pressure measurement and instrument store, PC software and with different probes for different applications.

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