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Smart Differential Pressure Measuring Instrument - Testo 510i


The testo 510i differential pressure measuring instrument, used in conjunction with a smartphone or tablet, is suitable for quick and easy measurement of gas flow pressure and static pressure, as well as pressure drops on fans and filters. You can also use the compact testo 510i for flow measurement and volume flow measurement.

 Use your smartphone or tablet as a display: installed on a terminal device, the testo Smart Probes App allows you to view testo 510i readings conveniently, configure volume flow measurements quickly and easily, and carry out reliable timed and multi-point mean calculation. The App also includes a measurement menu for the pressure drop test. All measurement data can be displayed as a chart or in table form. The measurement data log can be emailed directly as a PDF or Excel file.

System requirements:

  • iOS 8.3 or later
  • Android 4.3 or later
  • Bluetooth 4.0

Product Benefits:

  • Compact professional measuring instrument from the Testo Smart Probes series, for use with smartphones/tablets

  • Measurement of gas flow and static pressure, as well as volume flow

  • Measurement menu for pressure-drop test incl. alarms

  • Easy configuration and determination of the volume flow

  • Measurement data analyzed and sent via testo Smart Probes App

  • Magnetic fixture for better attachment

  • Space-saving and easy to transport

  • Made in Germany

  • Two Years Warranty

Delivery Scope:

Testo 510i differential pressure measuring instrument with smartphone operation, including hose set (Ø 4 mm and 5 mm) with adapter, batteries and calibration protocol.

Technical Details:

Differential pressure (internal sensor) - Piezoresistive

Measuring range

-150 to +150 hPa


±0.05 hPa (0 to +1 hPa)

±(0.2 hPa + 1.5 % of mv) (+1 to +150 hPa)


0.01 hPa

General technical data


148 x 36 x 23 mm

Operating temperature

-20 to +50 °C

Product-/housing material


System requirements

requires iOS 8.3 or newer; requires Android 4.3 or newer;

requires mobile end device with Bluetooth 4.0

Product colour


Battery type

3 AAA micro batteries

Battery life

150 h

Storage temperature

-20 to +60 °C


92 g