4
Performing Detectors Routine Maintenance
Maintaining a Nitrogen Phosphorous Detector (NPD)
148
TRACE 1300 and TRACE 1310 Hardware Manual
Thermo Scientific
Figure 124.
NPD Cell Assembly Components
Figure 125.
NPD Detector: Jet and Collecting Electrode (Anode) Pin
To ensure optimum performance of the NPD, you must keep it clean and free of dust and
deposits. Symptoms such as reduced sensitivity and increased noise indicate that detector
cleaning, or thermionic source replacement could be necessary.
Insulator
Collecting Electrode
Thermionic Source
Assembly
Signal Cable
Detector Body
See
Collecting Electrode
Cable
Thermionic Source
Assembly Cable
Collecting Electrode Straight Jack Connector
Jet
Collecting Electrode Pin
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