6
Connecting the Inlet Plumbing
Setting Up the Inlet for Loop Injections (Flow Injection Analyses)
Thermo Scientific
LTQ Series Getting Connected Guide
51
Setting Up the Inlet for Loop Injections (Flow Injection Analyses)
Y
To set up the inlet for loop injections
1. Connect a loop filler to port 5 of the divert/inject valve. See
.
Figure 34.
Divert/inject valve set up for loop injections
2. Connect a sample loop to ports 1 and 4.
3. To connect the LC pump to port 2 of the divert/inject valve:
• Using an appropriate fitting and ferrule, connect one end of a length of red PEEK
tubing to the outlet of the LC pump.
To produce a stable solvent flow, the Surveyor MS Pump Plus requires a minimum
backpressure of 3 bar (43 psi). To connect the Surveyor MS Pump Plus, use a length
of 0.005-in. ID PEEK tubing sufficient to exert a backpressure of 3 bar (43 psi), or
connect an in-line backpressure regulator between the LC pump outlet and the
divert/inject valve.
• Using a fingertight fitting and a ferrule, connect the other end of the tubing to port 2
of the divert/inject valve.
3
5
1
Connect port 2 to
the LC pump
Connect a sample loop to
ports 1 and 4
Connect port 6 to
a waste container
Connect port 3 to
the ion source
Connect a
loop filler to
port 5
