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Testo 510i

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The Testo 510i smart differential pressure probe links to smart phones and tablet devices to display and log measurement data. The unit measures static pressure but the Smart App can calculate air flow as well as volume flow with a Pitot tube (not included). Typical applications includes the measurement of duct pressures as well as pressure drop across filters and coils. Measurement menu in the Smart App includes pressure drop alarms. Easy App configuration includes calculations for volume flow (simply enter the pitot tube factor and dimensions). A magnetic back holds instrument for hands-free operation.


The Testo 510i works on smart devices with either Android or Apple operating systems. The App is a powerful and easy-to-use tool that allows you to remotely read measurements from up to six (6) smart devices. All measurement data is displayed as instrument readings, tables, or graphs. The measurements can be quickly saved as PDF or Excel files. The App creates custom reports which can be saved and / or shared by email.

For details on Pitot tubes please refer to the appropriate pages within Pressure setion of the website.


Pressure measuring range -60 to +60 InH₂O / -150 to +150 hPa

Pressure accuracy ±0.02 InH₂O (0 to +0.4 InH₂O) / ±0.05 hPa (0 to +1 hPa), ±(0.1 InH₂O + 1.5 % of remaining measurement value) (+0.4 to +60 InH₂O) / ±(0.2 hPa + 1.5 % of mv) (+1 to +150 hPa)

Pressure resolution 0.00 InH₂O / 0.01 hPa

Warranty 2 years

Battery type x3 AAA batteries

Typical battery life 150 hours

Storage temperature -20 to +60 °C

Dimensions 148 x 36 x 23 mm

Operating temperature -20 to +50 °C

Support documents

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Testo smart probe user manual.pdf Testo smart probe user manual
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