Electron Capture Detector (Ecd) - HP 5890 SERIES II Service Manual

ELECTRON CAPTURE DETECTOR (ECD)

The ECD consists of two parts: the detector cell, and a heated block. UNDER NO CONDITION IS THE
ECD CELL TO BE DISASSEMBLED. It will simply be exchanged for a new one. This does not require
the detector heated block to be removed from the mainframe. There are two types of ECD detectors
which may be installed in an HP 5890 Series II. The older version (shown below on the left) is referred
to as the 19233A/19235A variety. The newer version (shown to the right of the 19233A/19235A version)
is referred to as the G1223A/G1224A variety. Instructions for disassembly and maintenance are given
for both versions of the ECD detector.
ALL VERSIONS OF ECD DETECTOR WELDMENTS (CELLS) CONTAIN RADIOACTIVE
MATERIAL. EXPOSURE TO RADIOACTIVE MATERIAL IS HAZARDOUS TO HUMAN
HEALTH. UNDER NO CIRCUMSTANCES SHOULD AN ECD DETECTOR WELDMENT
BE DISASSEMBLED. ECD DETECTOR WELDMENTS SHOULD BE EXCHANGED FOR
NEW ONES.
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