METHOD FOR MEASURING COMBUSTION RATE OF CITY GAS

摘要

PURPOSE:To measure the combustion rate of city gas continuously by distribution the rate of total amount of carbon hydride other than methane into butane and propane depending on whether the flammable gas which is mixed for adjusting the amount of heat is butane or propane and then calculating the index of a specific combustion rate according to each ratio of gases whose combustion rates are to be calculated. CONSTITUTION:A hydrogen sensor 4 and an oxygen sensor 5 are installed at a measurement line 3 and an infrared ray type gas sensor 6 is constituted at the downstream side. Each ratio of gases whose combustion rates are to be calculated which are measured by the sensor 4, 5, and 6 is input to an operation means 1 utilizing a microcomputer etc., thus obtaining an index MCP of combustion rate. The ratio between butane and propane is set to the operation means by a setting means 12 according to whether a flammable gas to be mixed by adjustment of amount of heat is butane or propane. Therefore, the operation means 11 allocates the total amount of carbon hydride other than methane measured by a carbon hydride sensor part 10 to butane and propane and then the index of a specific combustion rate is calculated from each ratio between these and other gases whose combustion rate to be calculated.