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Portable Trace Oxygen Analyzer Operation
Teledyne Analytical Instruments 35
1. Use the UP/DOWN keys to navigate to the SPAN screen.
Then press ENTER to start the span calibration.
Once the span calibration has begun the screen changes to reveal a
span finish selection.
2. When the FINISH selection appears, press ENTER to end the
span calibration. The analyzer will accept the calibration and
return to the HOME screen.
Note: After successfully performing a span calibration, you are
returned directly to the HOME screen rather than back to
the previous menu.
3.2.15 Filter Screen
The 3110 includes user adjustable filter. The filter has settings 1-
10. Setting 1 is the least amount of filtering and 10 is the highest level of
damping. The filter is used to reduce the noise level of the O
2
readings.
More filtering is required for lower trace ranges such as 10 ppm. Adding
filtering will slow down analyzers response to changing O
2
levels. The
lowest effective level of filtering should always selected. The filter level
should be lowered to 1or 2 when setting the span to avoid delays. For a
0-10 ppm range a filler setting or 6 or 7 should typically provide good
results.