Detector Systems
Electron capture detector (ECD)
A very clean system may produce a value below the low end of 10 (100 Hz). To correct this condition, an adjustment is made to the present potentiometer located on the ECD electronics board.
ECD Potentiometer SwitchUp: Adj
Down: Fixed
ECD Potentiometer Adjustment
ECD Potentiometer Switch and Adjustment
1.Remove the right side of the panel.
2.Flip the switch up to the Adj. position.
3.Using a small screwdriver, turn the potentiometer clockwise until the background level is at or slightly above 20 (200 Hz, low reading for trace analysis).
4.Replace the right side of the panel.
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