6.0CALCULATING MOLY CONVERTER EFFICIENCIES
6.1PURPOSE
To provide instructions on how to calculate the efficiency of a Moly converter when using a GPT method of testing converters, by using the US EPA method, where the actual concentration of ozone is not a factor in the accuracy of the calculation of the converter efficiency. This procedure is based on the Code of Federal Regulations, Title 40, Chapter I, subchapter C, Part 50, Appendix F.
6.2TOOLS
API T700 calibrator with O3 Gen option (or equivalent)
Moly Test Data Sheet (provided on page following this procedure)
6.3PARTS
NONE
6.4PROCEDURE
For the purpose of providing an example, this procedure uses 450 PPB NO gas as the reference point, you don’t have to pick these values, they are just an example. There is also an assumption that the analyzer has a good calibration done @ 450 PPB NO span gas. If this is not the case, then once you have finished the leak check on the analyzer, input your 450 PPB NO span gas and calibrate the analyzer.
Note | For the GPT to be performed correctly, there must be a minimum of |
| 10% more NO than O3 produced. For example, if the Ozone produced |
| is 400 PPB then the NO used must be 440 PPB or more. Typically 450 |
| PPB NO is titrated against 400 PPB of Ozone. |
1.Leak check machine to ensure that there are no leaks in the analyzer.
2.For the duration of this test, set the CE factor to 1.0000 (100%) in the instrument firmware (this would be in the
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