Hazardous Area Operation
Purge Operation
Thermo Fisher Scientific
Prima PRO & Sentinel PRO Mass Spectrometers User Guide
A-9
Table A
–5.
Types of purge controllers
Exp
X-purge
Z-purge
Power switch
Electrical contactor
interlocked to purge
status and e-stop
button
Electrical contactor
interlocked to purge
status and e-stop
button
Electrical contactor
interlocked to e-
stop button
Purge initialisation
Automatic, following
initial enclosure
pressurisation
Automatic, following
initial enclosure
pressurisation
Manual
Purge timer
Electronic
Electronic
Manual
Action on purge fail
4-second warning,
then automatic
power switch off
4-second warning,
then automatic
power switch off
Alarm generated
Purge fail override
Controller function
(password protected)
Controller function
(password protected)
N/A
The following tables specify the purge and air supply parameters
required to ensure safe operation of the instrument.
Table A
–6.
Parameter values and air requirements
P
rim
a
/
S
ent
inel
P
RO
E
x
P
rim
a
/
S
ent
inel
P
RO
E
x +
r
e
mo
te
RMS
, and
S
ent
inel
P
RO
E
x
+
du
al
RMS
P
rim
a
/
S
ent
inel
P
RO
(
n
o
n
-E
x) +
remo
te R
MS
(p
u
rg
ed)
Enclosure Internal Free Volume
190 L
235 L
45 L
Initial Purge Flow Rate
100 Nl/min
100 Nl/min
100 Nl/min
Minimum Purge Time
11 minutes
15 minutes
3 minutes
Minimum Quantity of Protective
Gas Required
1100 L
1500 L
300 L
Continuous Dilution and
Pressurisation Flow Rate
100 NL/min 100 NL/min 100 NL/min
Purge Operation
Requirements
