341 Micro-cell Electron Capture Detector (µ-ECD)
Maintaining a µ-ECD detector
26 of 26
Jun 2001
Detectors
Agilent 6890 Gas Chromatograph Service Manual
It is good practice to monitor the progress of the thermal cleaning by
plotting the µ-ECD signal. Over time, the signal baseline signal should
change as shown in Figure 341-18.
Figure 341-18 Time
7. Check the ECD “output” value from the GC display. It should be lower
than the first reading.
Performing a radioactivity leak test (wipe test)
Micro-cell ECDs must be tested for radioactive leakage at least every 6 months.
Records of tests and results must be maintained for possible inspection by
the Nuclear Regulatory Commission and/or responsible state agency. More
frequent tests may be conducted when necessary.
The procedure used is the wipe test. A Wipe Test Kit (part no. 18713-60050)
is supplied with each new µ-ECD. Refer to the information card supplied in
the Wipe Test Kit for instructions on performing the wipe test.
Start of thermal cleaning
Baseline before cleaning
Baseline after
cleaning
To Next Page
Loading...
Need help?
General
