| 摘要 |
<p>A method and apparatus for monitoring a supply of gas such as the production of methane by anaerobic degradation of organic matter utilises a monometer (14) accurately to measure predetermined volumes of the gas. Each measured volume is discharged into a chamber (18) also of a predetermined volume and containing a second gas, in order to obtain a precisely known dilution of the gas production to be monitored. The chamber (18) contains a catalytic gas sensor (36) sensitive to the gas to be monitored and which produces an output of the first gas concentration within the chamber (18), from which the production rate and volume of the first gas can be determined.</p> |
