Bruker BMPC/2, Technical Manual

Page: 34 / 136

34 Z31823_00_05
Software
5.4.4 He Fill Mode
The He Fill mode is necessary because the T1 and/or T2 parameters may briefly fall
below the alarm threshold during the helium refill process. In order to avoid an alarm
from being triggered the He Fill mode can be used to suppress the T1/T2 alarm for up to
six hours.
The P2 pressure control heater is also disabled for one hour, as this is not efficient when
the magnet is open and thus would only lead to unnecessary helium consumption.
When the He Fill mode is activated it is indicated in the status bar together with the
length of fill time remaining.
Figure 5.16 He Fill Mode 292 Minutes
The suppressed alarms are represented in the Present Values/Event display as indi-
cated in the figure below.
Figure 5.17 Alarm Temporarily Disabled
Once the helium refill is finished and the remaining time was expired, the program will
automatically leave He Fill mode and return to monitoring mode.
For information on configuration the He Fill mode read
"He-Refill / He Measurement" on
page 106 .
Alarm temporarily
disabled