Bruker BMPC/2, Technical Manual

Page: 19 / 136

19 Z31823_00_05
Principles of Operation
4.4.1 P1 Pressure Monitoring
The P1 pressure is continuously monitored against a pre-specified upper and lower limit
and the following actions taken if one of these limits is reached:
4.4.2 T1/T2 Temperature Monitoring
The T1 and T2 temperatures are continuously monitored against a pre-specified lower
limit and the following actions taken if the limit is reached:
4.4.3 Fl Helium Flow Monitoring
The Fl helium flow value is continuously monitored against a pre-specified lower limit
and the following actions taken if the limit is reached:
Precondition Condition Action
P1 pressure is
lower
than
P1
low warning
limit
A warning is
triggered
.
Software in Monitor &
Alarm mode
P1 pressure is
lower
than
the P1
low alarm
limit
Alarm cycle is
activated
P1 pressure is
higher
than
the P1
high warning
limit
Second pump is started and
a warning is
triggered
Software in Monitor &
Alarm mode
P1 pressure is
higher
than
the P1
high alarm
limit
Second pump is started and
the alarm cycle is
activated
Table 4.1 P1 Pressure Monitoring
Precondition Condition Action
T1 or T2 temperature is
lower
than the T1/T2
warn-
ing
value
Second pump is started and
a warning is
triggered
Software in Monitor &
Alarm mode
T1 or T2 temperature is
lower
than the T1/T2
alarm
value
Second pump is started and
the alarm cycle is
activated
Table 4.2 T1/T2 Temperature Monitoring
Precondition Condition Action
Fl value is
lower
than the
flow
warning
value
Second pump is started and
a warning is
triggered
Software in Monitor &
Alarm mode
Fl value is
lower
than the
flow
alarm
value
Second pump is started and
the alarm cycle is
activated
Table 4.3 F1 Helium Flow Monitoring