Testo 521 Differential Pressure Meters

Highly accurate with internal differential pressure sensor, ideal for inspecting extraction units and ventilators, and for monitoring pressure drops in filters.

When used with the Pitot tube, the internal pressure sensor measures velocities from 5 to 100 m/s. The 100 Pa probe, which can be connected externally, measures accurately from 1 to 12 m/s.

• Calculation of velocity and volume flow via Pitot tube measurement
• Multi point and timed mean calculation
• Temperature compensated differential pressure sensor 0 to 100 hPa integrated in instrument
• 2 probe sockets for pressure and temperature
• Long term analysis with internal data memory
• Save data according to site and analyze on PC or notebook computer