same plane see Figure 21

After the emission test, a zero gas and the same span gas shall be used for re-checking the analysers.

After the emission test, a zero gas and the same span gas shall be used for re-checking the analysers.

After the emission test, a zero gas and the same span gas shall be used for re-checking the analysers.

Another method is the introduction of a concentration step change at the beginning of the sampling line by switching from zero to span gas.

The calibration must be checked by using a zero gas and a span gas whose nominal value is more than 80 per cent of full scale of the measuring range.

Another method is the introduction of a concentration step change at the beginning of the sampling line by switching from zero to span gas.

The response at a given fuel flow must be determined from the difference between the span gas response and the zero gas response.

prior to each sample analysis, the analyser range to be used for each pollutant shall be set to zero with the appropriate zero gas;

Zero and span gas reading of the analysers used for continuous measurement shall be checked.

Another method is the introduction of a concentration step change at the beginning of the sampling line by switching from zero to span gas.

The calibration shall be checked by using a zero gas and a span gas whose nominal value is within 80-95 per cent of the supposed value to be analysed.

The analyser peak-to-peak response to zero and calibration or span gases over any 10 second period shall not exceed 2 % of full scale on all ranges used.

is the mean response, including noise, to a zero gas during a 30-second

The zero-response is defined as the mean response including noise to a zero-gas during a 30-second time interval.