5.9.9 Re-checking the analysers
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - International Codes - NOx Technical Code (2008) - Technical Code on Control of Emission of Nitrogen Oxides from Marine Diesel Engines - Chapter 5 - Procedures for NOx emission measurements on a test bed - 5.9 Test run - 5.9.9 Re-checking the analysers

5.9.9 Re-checking the analysers

  5.9.9.1 After the emission test, the zero and span responses of the analysers shall be re-checked using a zero gas and the same span gas as used prior to the measurements. The test shall be considered acceptable if:

  • .1 the difference between the responses to the zero gas before and after the test is less than 2% of the initial span gas concentration; and

  • .2 the difference between the responses to the span gas before and after the test is less than 2% of the initial span gas concentration.

  5.9.9.2 Zero and span drift correction shall not be applied to the analyser responses recorded in accordance with 5.9.7.

Parent topic: 5.9 Test run
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