Detector SystemsElectron capture detector (ECD)142A very clean system may produce a value below the low end of 10 (100Hz). To correct this condition, an adjustment is made to the presentpotentiometer located on the ECD electronics board.ECD Potentiometer Switch and AdjustmentECD Potentiometer SwitchUp: AdjDown: FixedECD Potentiometer Adjustment1. 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 thebackground level is at or slightly above 20 (200 Hz, low reading fortrace analysis).4. Replace the right side of the panel.
