| 摘要 |
FIELD: gas metering methods and devices. ^ SUBSTANCE: gas meter includes heat flow rate pickup for determining mass flow rate and heat quality pickup for determining type of gas. Heat gas flow rate pickup and(or) heat gas quality pickup are in the form of CMOS -anemometers having heating member and temperature pickups arranged upstream or downstream from heating member relative to gas flow direction; they may be in the form of single pickup. In variants of invention it is possible to measure heat conductance, heat capacity, diffusion capability or viscosity of gas or gas mixture for determining type of gas. At presence of combustible gas or gas mixture counter operates with calibration in units of mass or volume in standard condition. At presence fuel gas and or gas mixture said counter operates with calibration in units energy. ^ EFFECT: improved accuracy of metering consumed energy due to automatic identification of gas type, of trials of manipulations with counter, possibility for automatic tracking heat capacity without its direct measuring. ^ 14 cl, 4 dwg |
