Testo 512-1 Digital differential pressure measuring instrument with App connection

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  • Simple, fast and precise differential pressure measurement (0 to 200 hPa) for checking filters and for Pitot tube measurement in the ventilation duct
  • Reliable measurement results due to position-independent differential pressure sensor with high accuracy
  • Fast in-app (duct) configuration, graph history, second screen and measurement data memory in the testo Smart App
  • Volume flow calculation in measuring instrument and App

Product Description

Differential pressure measurement fast, easy and precise: This is what the compact measuring instrument testo 512-1, which measures pressures up to 200 hPa, is all about. In practical use, it convinces with its flexibility and variety of applications. Checking the gas pressure on burners by measuring gas flow pressure and static gas pressure is just as quick and precise as checking filters and Pitot tube measurement in the ventilation duct. The position-independent differential pressure sensor ensures reliable and highly accurate measurement results. The testo Smart App for smartphones and tablets supports you with these functions:

  • Configure measuring instrument
  • Display graphical measured value curve
  • Save measurement data
  • Manage customers and measuring sites
  • Documentation on site
  • E-mail dispatch of the report

Delivery Scope

  • testo 512-1 - Differential pressure measuring instrument with App connection, measuring range 0 to 200 hPa, audible alarm
  • Transport bag
  • Connection hose made of silicone
  • Calibration protocol
  • 3 x AA batteries


Technical Data

Differential Pressure - Piezoresistive

Measuring range

0 to +200 hPa


±(0.3 Pa + 1 % of mv)± digit (0 to 25.00 hPa)

±(0.1 hPa + 1.5 % of mv)± digit (25.0 to 200.00 hPa)


0.001 hPa (0 to + 2.0 hPa))

0.01 hPa (2.01 to + 20.0 hPa))

0.10 hPa (20.1 to + 200.0 hPa))


General technical data


146 x 60 x 28 mm

Operating temperature

-20 to +50 °C

Product-/housing material


Protection class


Battery type

3x AA

Battery life

120 h

Storage temperature

-20 to +50 °C


190.0 g

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