2.2 Ambient condition measurements
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Statutory Documents - IMO Publications and Documents - Resolutions - Marine Environment Protection Committee - Resolution MEPC.103(49) - Guidelines for On-Board NOx Verification Procedure - Direct Measurement and Monitoring Method - (adopted on 18 July 2003) - Annex - Guidelines for On-Board NOx Verification Procedure - Direct Measurement and Monitoring Method - 2 Engine Performance and Ambient Condition Measurement - 2.2 Ambient condition measurements

2.2 Ambient condition measurements

  2.2.1 Table 2 lists the ambient condition parameters that should be measured, or calculated, and recorded at each mode point during on-board NOx monitoring.

Ambient Condition Parameters

Symbol Parameter Dimension
Ha absolute humidity (mass of engine intake air water content related to mass of dry air) g/kg
pB total barometric pressure (in ISO 3046-1, 1995: px=Px=site ambient total pressure) kPa
Ta temperature at air inlet (in ISO 3046-1, 1995: Tx=TTx=site ambient thermodynamic air temperature) K
Parent topic: 2 Engine Performance and Ambient Condition Measurement
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