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

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Ideal for checking pressure in sensitive industrial processes, the testo 526-1 high precision differential pressure measuring instrument&nbsp;has a measuring accuracy of &plusmn;0.1% of the 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 the final value. Two additional pressure and temperature probes can be attached.

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This kit comes with an RS-232 cable, USB to serial adapter, and driver CD.<br />
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This item can also be used for the first generation testo 400 (released 1998), testo 650, and testo 950<br />
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Data Cable and USB Adapter Kit

Data cable and USB adapter kit

This kit comes with an RS-232 cable, USB to serial adapter, and driver CD.<br />
<br />
This item can also be used for the first generation testo 400 (released 1998), testo 650, and testo 950

Data cable and USB adapter kit - for testo 350 XL

Data cable and USB adapter kit - for testo 350 XL