Teledyne M5000B operating instructions Calibration, StandardizationFluids, Procedure

4 Operations/Analysis Unit

4.3Calibration

StandardizationFluids

Twostandardizationfluidsarenecessarytocalibratetheanalyzer:

1.ZeroFluid: Thezerostandardfluidmusthaveacompositionsimilar to the sample, and ideally, contains none of the components of interest.Thezerofluidshouldbelaboratoryanalyzedtodetermineits composition. The exact composition must be known, as the accuracy of the analysis can be no better than the knowledge of the standardizationfluid.

2.SpanFluid: Thespanfluidmustberepresentativeofthesamplefluid incomposition(likethezerofluid),andcontainameasuredquantity of the component of interest. The component of interest content of the fluid should be in the region of 75% to 100% of the range of measurement. As with the zero fluid, the accuracy of the system is dependent upon the your knowledge of the span fluid composition. Ideally, the span sample should contain at least 75% of whatever the instrumentissetuptoanalyze.

Procedure

1.Introduce zero fluid (see above) into the sample cell. Flow liquid samples into the cell at a flow rate of about 50 cc/minute to allow the sample to completely flush to a steady state concentration.

Make certain that bubbles are not introduced or formed in the cell. (Some back-pressure may help avoid this.) Gas samples can be introduced at about 200-500 cc/minute.

2.The digital meter should be capable of adjusting the zero level to an on scale reading. Consult section for zero functioning. If the reading cannot be adjusted then the signals will require rebalancing for your particular process fluid. The filter wheel located inside the detector module must be removed and balanced optically with screens. See section:___________

b.If the measuring peak is so far out of balance with the reference peak that1 it can no longer be adjusted with potentiometer R3, the optical filters require re-screening. If the analyzer has been in use for some time, it is possible that the sample cell windows need cleaning or that a filter has deteriorated.

Another cause of peak imbalance might be that the sample

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