Appendix: HART Specific Information
MSA
ULTIMA X ® Series
GB
139
Adjusting Span screen
After the 30-second Span initialisation, a Span adjustment screen displays and con-
tinually updates with the gas [PV] reading, units and type information. Once the de-
vice detects a stable reading, the data is stored automatically and the user is
notified of the completion status.
Fig. 42 for a sample view of the Span adjust-
ment screen. The user can abort the procedure at any time and the prior calibration
data is restored.
Calibration completion message
Upon successful completion of the SPAN procedure, an information screen dis-
plays.
Fig. 44 for a sample completion screen. This is a five-second information
screen; no user action is required.
Calibration gas reminder screen
Following the Calibration completion screen, another information screen is present-
ed to inform the user to disconnect any calibration gas from the device. This is a
five-second timed message; no user acknowledgement is required.
Fig. 46 for a
view of this information screen.
Loop control reminder message
The final calibration screen is an information screen prompting the user to recon-
nect the sensor output to any automatic control process that was disconnected at
the start of the procedure. The user is required to acknowledge this screen.
Fig. 48 for a sample view of this screen.
