5.9.7 Analyser response
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 - 5.9.7 Analyser response

5.9.7 Analyser response

  5.9.7.1 When stabilized, the output of the analysers shall be recorded both during the test and during all zero and span response checks, using a data acquisition system or a strip chart recorder. The recording period shall not be less than 10 minutes when analysing exhaust gas or not less than 3 minutes for each zero and span response check. For data acquisition systems, a minimum sampling frequency of 3 per minute shall be used. Measured concentrations of CO, HC and NOx are to be recorded in terms of, or equivalent to, ppm to at least the nearest whole number. Measured concentrations of CO2 and O2 are to be recorded in terms of, or equivalent to, % to not fewer than two decimal places.

Parent topic: 5.9 Test run
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