METHOD OF CHECKING LINEARITY AND HYSTERESIS OF CALIBRATION CURVE OF LOW ABSOLUTE PRESSURE GAUGE

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to measurement technique and can be used u0434u043bu00a0 verification of linearity and u0433u0440u0430u0434u0443u0438u0440u043eu0432u043eu0447u043du043eu0439 characteristics in low pressure gauges the absolute u0434u0430u0432u043bu0435u043du0438u00a0 without u043fu0440u0438u043cu0435u043du0435u043du0438u00a0 model of measurement equipment. purpose to simplify and reduce the time u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0 u00a0u0432u043bu00a0u0435u0442u0441u00a0 verification, control the primary output signal.in u043eu0442u043au0430u0447u043du0443u044e system 11 through pipes 5, 9 and 10, u0432u0430u043au0443u0443u043cu0438u0440u0443u044eu0442 tank 3 with u043fu043eu0432u0435u0440u00a0u0435u043cu044bu043c gauges 4, the compression device 6 and auxiliary tank 8. closing the pipes 9 and 10 through the faucet 2 blow gas in the tank 3, and the compression device 6 and a pressure corresponding to i steps. then close the faucet 2, compress the gas by the device 6, and registers the pressure gauges 4.then, the following steps are u0434u0430u0432u043bu0435u043du0438u00a0. after u0434u043eu0441u0442u0438u0436u0435u043du0438u00a0 ceiling u0438u0437u043cu0435u0440u0435u043du0438u00a0 u043cu0430u043du043eu043cu0435u0442u0440u0430 4 reduces the pressure u0441u0442u0443u043fu0435u043du00a0u043cu0438 by pumping of the pump. at each step of u0440u0430u0441u0448u0438u0440u00a0u044eu0442 gas in the tank 3 by u043fu043eu0434u0441u043eu0435u0434u0438u043du0435u043du0438u00a0 u0432u0430u043au0443u0443u043cu0438u0440u043eu0432u0430u043du043du043eu0433u043e tank 8. the u0434u0430u0432u043bu0435u043du0438u00a0 u0437u0430u043cu0435u0440u00a0u044eu0442 gauges 4.the results are the u043fu0440u0435u043eu0431u0440u0430u0437u043eu0432u0430u043du0438u00a0, u043du0435u043bu0438u043du0435u0439u043du043eu0441u0442u044c, hysteresis and an initial output signal u043fu043eu0432u0435u0440u00a0u0435u043cu043eu0433u043e u043cu0430u043du043eu043cu0435u0442u0440u0430. 2).