OIML R 144-1 • Metrological and technical requirements

2.1 gas analytical system

assembly to carry out specified gas analytical measurements (ISO 7504:20011))

  • a means for sampling and sample preparation (in the case of extractive sampling),

  • a gas analyzer,

  • a means for adjusting zero (gas analyzer),

  • a means for adjusting the gas analyzer using a calibration gas mixture,

  • a means for the accumulation, processing and storage of measurement results,

  • a means for the control and adjustment of the main components of the system,

  • an interface to connect devices measuring the gas flow parameters of exhaust emissions, and

  • gas and electric lines of communication.