As the costs of fuels and consumables (natural gas, hydrogen, oxygen, etc.) continue to rise, the ability to accurately measure the amount used in a process becomes significant in controlling costs and determining bottom line profits. It may have been acceptable in the past to absorb these expenses as necessary overhead to conduct business, but more companies are beginning to analyze consumables used in heat-treating processes to determine the profitability of each particular job. Therefore, it is important to implement a strategy of adding cost-effective, accurate gas flow measuring devices to heaters, boilers, and cogeneration equipment.