11 of 24
Jun 2001
Detectors
Agilent 6890 Gas Chromatograph Service Manual
Thermal Conductivity Detector (TCD) 330
Replacement procedures
1. Remove the detector carrier bracket and detector cell as described in the
Replacing the entire detector procedure.
2. Remove the cover and the insulation.
3. Use a T-20 Torx screwdriver to remove the two screws securing the
detector cell to the aluminum detector carrier bracket and lift the cell
from the bracket.
Figure 330-9 Removing the detector cell from the carrier bracket
4. Slide the heater/sensor assembly from the detector cell.
5. If your TCD uses a ∆
PRT, slide it out of the detector cell.
Detector cover
Insulation
Heater/sensor assembly
Detector cell
Insulation
Aluminum detector bracket
Insulation
D PRT
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