Typical Values; To Check Npd Performance - Agilent Technologies 7820A Service Manual

To Check NPD Performance

136
Agilent 7820 GC Service

Typical values

The following are typical values for the detector results. The
results for a detector depend on site preparation related factors.
These are not pass/fail criteria.
Components Typical area counts
C13 and C14 41 pA-sec
C15 and C16 410 pA-sec
If the detector is very quiet, area counts may be lower than these
typical measurements. If so, use an MDL measurement to
assess detector health.
Minimum detectable level for tridecane : < 3 pg C/sec
Repeatability (6 runs, first deleted to avoid first run anomalies):
RSD% of RT < 0.06%; RSD% of area < 2%.
Split: C13/C16 and C14/C16 sensitivity ratios: >0.95 and <1.05
1 Gather the following:
 Evaluation column, HP-5 30 m — 0.32 mm — 0.25 µm