Agilent Technologies G3183B, Installation And Operation Manual

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Splitter Configurations
3
Installation and Operation Guide 27
To use the tables, select the configuration you wish to set up. For example,
Configuration 1 splits column effluent equally between two atmospheric
pressure detectors (FID, TCD, ECD, FPD, and NPD) and an MSD. To plumb
this system, connect a 2.89-m length of 0.18-mm id uncoated deactivated fused
silica tubing to the MSD and two 1.06-m lengths of the same tubing to the two
atmospheric pressure detectors. This configuration is specifically designed for
MSDs with a diffusion pump or standard turbo pump (2 mL/min maximum
flow).
The makeup supply (either Aux EPC or PCM module) is set to 3.8 psig. This
will add sufficient makeup flow to the column flow to maintain the splitter
(and thus the column outlet) at 3.8 psig. Column flow can be varied from 0 to a
maximum flow which is determined by the upper temperature of the GC oven
program.
If Configuration 1 is used with a method that programs to 200 °C using helium,
the flow through each restrictor at 200 °C will be 1 mL/min. The total flow will
be 3 mL/min. The maximum column flow should be equal to the total flow
minus about 1 mL/min to ensure that there is some flow for the makeup
supply to regulate with.
Table 3 Splitter flows
40 °C 200 °C 300 °C
Configur-
ation Flow R1,
mL/min
Flow R2,
mL/min
Flow R3,
mL/min
Flow R1,
mL/min
Flow R2,
mL/min
Flow R3,
mL/min
Flow R1,
mL/min
Flow R2,
mL/min
Flow R3,
mL/min
1 2 2 2 1 1 1 0.71 0.71 0.71
2 4 4 4 2 2 2 1.42 1.42 1.42
3 2 2 0.2 1 1 0.1 0.71 0.71 0.07
4 4 4 0.4 2 2 0.2 1.42 1.42 0.14
5 2 4 4 1 2 2 0.71 1.42 1.42
6 4 8 8 2 4 4 1.42 2.85 2.85
7 2 1 1 1 0.5 0.5 0.71 0.36 0.36
8 4 2 2 2 1 1 1.42 0.71 0.71