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针对涡街流量计抗干扰性能差、量程窄的问题,研制了一种抗干扰性能优的通用涡街流量传感器,从涡街信号的源头加以改进,提高了涡街信号的信噪比和灵敏度;并对涡街流量传感器输出信号的过程导线及初级信号处理电路的信号屏蔽和保护措施加以改进;研制的样机经气体流量标准装置等设备测试验证,不仅能抵抗1.5g以下的机械振动干扰,而且实现了大于20:1的宽量程比性能。
In view of the poor anti-jamming performance and narrow range of the vortex flowmeter, a general vortex flow sensor with excellent anti-jamming performance is developed, which is improved from the source of the vortex signal and improves the signal-to-noise ratio and the sensitivity of the vortex signal ; And improve the signal shielding and protective measures of the process leads of the vortex street flow sensor output signal and the primary signal processing circuit; the tested prototype is tested and verified by equipment such as the gas flow standard device, which can not only resist the mechanical vibration interference below 1.5g, And to achieve greater than 20: 1 wide-range performance.