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.

The stainless steel pitot tube (1000 mm long) enables precise flow velocity and temperature measurements – ideal for demanding applications.

Pitot tube, stainless steel, 1000 mm long, measures velocity...

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General technical data	Measuring range +1 to +30 m/s
	Length 1,000 mm
	Diameter 8 mm
	Pitot tube factor 0.67

Pitot tube, stainless steel, 1000 mm long, measures velocity...

Pitot tube, stainless steel, 1000 mm long, measures velocity...

Temperature - TC Type K (NiCr-Ni)

Temperature - TC Type K (NiCr-Ni)

General technical data

General technical data

Temperature - TC Type K (NiCr-Ni)	Measuring range 0 to +600 °C