The high-precision testo 521-1 differential pressure measuring instrument is ideal for accurate differential pressure measurements in air conditioning and ventilation technology, for instance for pressure drop on filters, checking fans and extractors or for Pitot tube measurements.

The high-precision testo 521-2 differential pressure measuring instrument is ideal for accurate differential pressure measurements in air conditioning and ventilation technology, for instance for pressure drop on filters, checking fans and extractors or for Pitot tube measurements.

Differential pressure measuring instrument 0 to 2.5 hPa

Ideal for checking pressure in sensitive industrial processes: the testo 526-1 high-precision differential pressure measuring instrument with a measuring accuracy of &plusmn; 0.1% of final value. It also has two probe inputs for additional pressure and temperature probes.

The testo 526-2 high-precision differential pressure measuring instrument is ideally suited for checking pressure in sensitive industrial processes, thanks to a measuring accuracy of &plusmn; 0.05% of final value. Two additional pressure and temperature probes can also be attached.

Connection cable, 2.5 m long, for pressure probes 0638 1741/1841/1941/2041/2141

Connection cable, 2.5 m long for pressure probes

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