Thermo Scientific TRACE 1600 Hardware Manual page 520

9
Adding Modules
Adding a Helium Saver Injector Module
488 TRACE 1600/1610 Hardware Manual
Table 21. Determining Correct Helium Regulator Pressure for Column Type (Sheet 2 of 2)
Column Length
30 m
60 m
100 m
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For flow rates not specifically listed, round up in pressure to the next highest value. For example, if
1.5 mL/min is desired using a 0.25 mm ID column of 15 m length, use a helium regulator pressure of
110 psig (760 kPa; 7.6 bar).
**
Minimum pressure required to avoid nitrogen back diffusion into the helium carrier gas. Higher pressure
will result in a slightly higher (than minimum) consumption of helium, but will not result in adverse
analytical performance.
9. Plumb a nitrogen supply to the appropriate Carrier input at the back of the GC as shown
in Figure 487.
Figure 487. Plumbing the Nitrogen Supply to the GC
Column i.d. Desired Flow
1.2 mL/min
1.7 mL/min
0.32 mm 1.5 mL/min
2.0 mL/min
2.5 mL/min
3.0 mL/min
3.5 mL/min
0.32 mm 1.5 mL/min
2.0 mL/min
2.5 mL/min
3.0 mL/min
3.5 mL/min
0.32 mm 1.5 mL/min
2.0 mL/min
2.5 mL/min
Required helium regulator
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pressure psig (kPa; bar)
140 psig (970 kPa; 9.7 bar)
150 psig (1030 kPa; 10.3 bar)
100 psig (690 kPa; 6.9 bar)
110 psig (760 kPa; 7.6 bar)
120 psig (830 kPa; 8.3 bar)
130 psig (900 kPa; 9 bar)
140 psig (970 kPa; 9.7 bar)
110 psig (760 kPa; 7.6 bar)
120 psig (830 kPa; 8.3 bar)
130 psig (900 kPa; 9 bar)
140 psig (970 kPa; 9.7 bar)
150 psig (1030 kPa; 10.3 bar)
130 psig (900 kPa; 9 bar)
140 psig (970 kPa; 9.7 bar)
150 psig (1030 kPa; 10.3 bar)
Thermo Scientific
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