Vaisala PTB330 - Manual (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.