Teledyne 6600 - Manual (Page 121)

Part III: 1-31
Oil in Water Part III
Teledyne Analytical Instruments
Calibration Fluid Introduction:
1. Introduce zero fluid through the calibration reservoir and allow to
flow through all. This requires V2, V3 open and V4 (adjusted) to
give flow of 50-200ccm as noticed by liquid level dropping in
calibration reservoir for Zero and Span in. See 5.5, part I.
As soon as the sample cell is filled with zero fluid and the display
reading stabilizes, zero the analyzer.
2. As soon as the zero fluid is about to be emptied from the reservoir,
add a small amount of span fluid. Make sure that no air
accidentally enters the sample system. This technique assures a
quick exchange of zero fluid for span fluid and conserves span
fluid. As soon as the sample cell is filled with span fluid and the
display stabilizes for the analyzer span the analyzer (see Part I, Sec
5.5). The instrument is now calibrated.
Setup of Internal Span Flag Calibration
Reintroduce zero fluid through and fill sample cell and stabilize display
again.. As soon as the sample cell is filled with zero fluid and the meter
reading stabilizes at zero again, manually introduce and adjust the span
flagreading according to the procedure outlines in section — of the 6600
Control Unit. The exact ppm value of the span filter (Flag) must be manu-
ally introduced first and ppm oil representation determined before the auto-
span mode can be selected to correct any span errors from the original
calibration automatically.The span flag optical filter has been chosen to give
an approximate upscale reading between 50-90% of the range of the instru-
ment. The span flag sensitivity once setup can be automatically programmed
by the 6600 multiprocessor electronics to update the span sensitivity hourly
during the auto-cal (zero plus span functions) of the instrument measurement.
This enhanced auto-cal feature assures high accuracy is maintained between
normal recommended manual field calibration using zero and span fluids
which must occur within a 6 week period minimum.