Differential pressure measuring instrument - testo 5210 pages

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We measure it.

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Differential pressure

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measuring instrument

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521 - Precise Pitot tube

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measurement

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Temperature-compensated differential pressure sensor in

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instrument

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Additional 2 probe inputs for the connection of further

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probes for the measurement of pressure and temperature

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Direct calculation of flow velocity and volume flow

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Direct zeroing of display value from pressure probes

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Display of Hold-, max. and min. values

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Easy data storage by measurement site as well as analysis,

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archiving and documentation via optional PC software

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Point and timed mean value calculation

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testo 521-1/-2/-3 are highly accurate differential pressure

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measuring instruments with an internal sensor. The

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versionstesto 521-1 and testo 521-2 both have ameasuring

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range from 0 to 100 hPa, however they are available in two

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accuracy classes:

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- testo 521-1 : accuracy 0.2 % of final value

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- testo 521-2: accuracy 0.1 % of final value

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testo 521-1 and testo 521-2 are optimally suited to checks

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on extraction systems and ventilators and for the monitoring

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of pressure drop at filters. In combination with a Pitot tube,

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the internal sensor measures flow velocities from 5 to 100

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m/s. The instrument additionally has two probe inputs for

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the connection of further probes for the measurement of

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pressure and temperature. A large selection of probes is

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available for this purpose.

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testo 521-3 has a measuring range of 0 to 2.5 hPa and

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records even the smallest pressure differences without

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difficulty. Its high accuracy and a resolution of 0.1 Pa make

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it ideal for differential pressure measurements in

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cleanrooms. In combination with the Pitot tube, the internal

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sensor measures flow velocities from 1 to 20 m/s. The testo

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521-3 is also equipped with two probe inputs for the

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connection of further probes for the measurement of

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pressure and temperature.

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