The testo 521-3 high precision differential pressure measuring instrument easily determines even the smallest differential pressures (up to +2.5 hPa). Its high accuracy and a resolution of 0.1 Pa make the instrument ideal for differential pressure measurements, in clean rooms, or for flue inspections. Using the testo 521-3, even the smallest differential pressures, up to 250 Pa, are measured. High accuracy and a resolution of 0.1 Pa mean the instrument is ideal for differential pressure measurements in clean rooms. When used with a pitot tube, the internal pressure sensor measures flow speeds in the range of 0.01 to 3937 fpm.
-Integrated temperature-compensated differential pressure sensor with accuracy of up to ± 0.5 Pa
-Calculation of the flow velocity and the volume flow via Pitot tube (optional)
-Direct zeroing of the display values of pressure probes
-2 probe inputs for additional pressure and temperature probes
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