Agilent Technologies 6850 Series II User Information page 77

Table 20. FPD Checkout Conditions (Method FPDCKO) (Continued)
Final time 2
Purge time
Purge flow
Detector
Temperature
H
2
Air flow
Makeup flow (N
Offset, flow off (0-fa)
Offset, flame on (0+fb)
Oven
Initial temp
Initial time
Rate 1
Final temp
Final time
Rate 2
Final temp
Final time
Background offset checks
1.
2.
3.
Released: March 2004
flow
)
2
If lit, turn the FPD flame off.
Display the signal output to determine flame-off background offset. A
stable value of < 40 display units is acceptable.
Ignite the flame. You should see an increase in detector output to a stable
value.
If not, confirm ignition by holding a mirror or shiny surface near the
aluminum exhaust tube, with the rubber drip tube removed, and observing
condensation if the flame is lit.
If the flame has not ignited, see
6850 Series II GC User Information
0 min
0.75 min
60 mL/min
200°C
75 ±2 mL/min
100 ±2 mL/min
60 ±2 mL/min
Should be < 40 display units
< [(0-fa) + 85 display units]
60°C
0 min
25°C/min
110°C
0 min
10°C/min
170°C
3 min
"Flame ignition problems" on page
Verifying Performance
FPD Checkout
208.
page 77 of 256