Procedures for cleaning and troubleshooting non-functioning Geigers
- Clean battery contacts using wire brush or sandpaper.
- Spray rotary selector (x 1, x 10, x 100) contacts with electronic contact cleaner and rotate the selector several times.
- Notice the position of calibration pot(s) & rotate back and forth a couple of times. Reset to approximate starting position
- Loosen nuts holding wires onto the indicator meter and clean the flat contacts on the wires (using sandpaper or wire brush). Reattach wires.
- Insert batteries.
- Set selector dial to “x 10″. Observe meter
- Test the meter using source, looking for consistent reading.
- Compare reading using “x 100″ or “x 1″ (although “x 1″ setting will probably “pin the needle”)
- You may need to adjust the calibration pot(s) to assure readings which are suitable for demonstration purposes. REMEMBER you are NOT calibrating the meter – only making it usable for detection purposes.
- If the meter does not work, try replacing the Geiger tube with one known to be good and retest. If the meter works, make sure to compare the “x 10 and x 1″ readings (adjusting calibration pots, if needed).
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