testo 511 measures absolute pressure with an accuracy of +/-3 hPa. It is converted to barometric air pressure by entering on-site height above sea level. In addition, barometric elevation measurement between two points is also possible.

• Measures absolute pressure, e.g. for absolute pressure compensation in flow velocity measurements with a Pitot tube
• Calculation of barometric air pressure
• Barometric altitude measurement
• Accuracy +/-3 hPa
• Protective cap for safe storage
• Including wrist strap and belt holder
• Backlit display
• 8 switchable pressure units: hPa, mbar, Pa, mmH2O, mmHg, inH2O, inHg, psi