| 摘要 |
<p>Gasmeter comprising a channel (6) for passing through it a flow of gas along a first sensor (8), and a chamber (16) which is arranged for receiving and containing at substantially stand still gas from said channel (6) and in which a second sensor (22) is arranged. The sensors are heated during heating periods and subsequently let cooled down in cooling periods. The cooling rate of the sensors is determined and, dependent on calibration values, are used to calculate a value of the flow rate through the channel (6) which is compensated for change of density of the gas.</p> |
