Betekenis van:
gas meter

Voorbeeldzinnen

1. Gas meter installation work
2. Gas meter or other flow instrumentation to measure the diluted exhaust gas flow.
3. Gas meter or other flow instrumentation to measure the dilution air flow.
4. The average temperature and pressure at the gas meter(s) or flow instrumentation inlet shall be recorded.
5. The average temperature and pressure at the gas meter(s) or flow instrumentation inlet must be recorded.
6. The gas meter or flow instrumentation shall be located so that the inlet gas temperature remains at 298 K (25 °C) ± 5 K.
7. The gas meter or flow instrumentation for the particulate sample flow shall be located sufficiently distant from the sampling pump P so that the inlet gas temperature remains constant (± 3 K), if flow correction by FC3 is not used.
8. The gas meter or flow instrumentation for the dilution air flow must be located so that the inlet gas temperature remains at 298 K ± 5 K (25 °C ± 5 °C).
9. The gas meter or flow instrumentation for the dilution air flow shall be located so that the inlet gas temperature remains at 298 K ± 5 K (25 °C ± 5 °C).
10. The gas meter or flow instrumentation shall be located sufficiently distant from the sample pump so that the inlet gas temperature remains constant (± 3 K), if flow correction by FC3 is not used.
11. A temperature sensor (T1), (accuracy and precision ± 0,4 kPa), fitted immediately upstream of the volume meter and used to register the pressure difference between the gas mixture and the ambient air;
12. If the sample gas flow is determined by differential flow measurement the flow meter or the flow measurement instrumentation shall be calibrated in one of the following procedures, such that the probe flow qmp into the tunnel shall fulfil the accuracy requirements of section 4.2.5.2 of Appendix 4 to this Annex: (a) The flow meter for qmdw shall be connected in series to the flow meter for qmdew, the difference between the two flow meters shall be calibrated for at least 5 set points with flow values equally spaced between the lowest qmdw value used during the test and the value of qmdew used during the test.
13. If the sample gas flow is determined by differential flow measurement the flow meter or the flow measurement instrumentation shall be calibrated in one of the following procedures, such that the probe flow qmp into the tunnel shall fulfil the accuracy requirements of section 4.2.5.2 of Appendix 4 to this Annex:
14. The average temperature and pressure at the gas meter(s) or flow instrumentation inlet shall be recorded. If the set flow rate cannot be maintained over the complete cycle (within ± 5 %) because of high particulate loading on the filter, the test shall be voided.
15. If the sample gas flow is determined by differential flow measurement the flow meter or the flow measurement instrumentation shall be calibrated by one of the following procedures, such that the probe flow GSE into the tunnel fulfils the accuracy requirements of Appendix I section 2.4: