Cross Check Your Gas Generator- If you Can. If you have 2 CEM Systems in the same area.
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•Connect the output of one calibrator to another.
•We connected the calibrator for Unit 1 to Unit 2 and vice versa.
•Then we ran a span check to see what happened.
You can learn a lot from this simple check. You could take any other calibrator from another unit and do this simple cross check. When we did this, I took a screenshot of the results and they were less than 100 nanograms apart.
NPPD plans to purchase a spare calibrator that could be sent around and used for comparisons and rolled into the NIST traceability program.