Zeroing your detector (EPC only)
21
Zeroing your detector (EPC only)
Your detector’s flow manifold contains a pressure sensor that may be zeroed
after it is installed on your GC. This zero procedure ensures an accurate
detector display.
Caution
Do not connect the detector and makeup gases to your flow manifold until
you have zeroed your detector’s pressure sensor.
1.
Plug in your GC and turn it on, if you haven’t already done so.
2.
Wait 15 minutes. This allows your GC to reach thermal equilibrium.
3.
Zero the detector’s pressure sensors:
a.
Press [Options], scroll to
Calibration
, and press [Enter].
b.
Scroll to
Front detector
or
Back detector
and press [Enter].
c.
Scroll to
Reference zero
and press [On].
d.
Scroll to
Makeup zero
and press [On].
4.
Turn off your GC and unplug the power cord.
5.
Plumb the reference/makeup gas to your detector. See the
6890 Site
Preparation and Installation Manual
for instructions.
6.
Reinstall the RFI cover.
7.
Replace the pneumatics top cover.
8.
Plug in the GC again and turn it on.
