Vaisala BAROCAP PTB330 Guide de l'utilisateur télécharger pdf (Page 85)

Chapter 4 ________________________________________________________________ Operation

VAISALA _______________________________________________________________________ 83

Examples:

Query syntax:

>PSTAB ?

P stab. : 1.00 hPa

Prompt syntax:

>PSTAB

P stab. : 0.5 psi ? 1.5 HPA

Command line syntax:

>PSTAB 0.5 PSI

P stab. : 0.5 psi

The pressure stability indicator is useful as it indicates instability in

the pressure measurement. The pressure instability may result from

different reasons depending on the application:

- In outdoor barometric pressure measurement, high wind speeds can

induce notable pressure instability.

- Building automation systems may also introduce pressure

fluctuations, and for example opening the door of a room can often

result in temporary pressure instability.

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Vaisala BAROCAP PTB330 Guide de l'utilisateur Page 85