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为了实现水工模型测试技术的现代化,省水利科研所最近研制成功了用于测量水工模型流速的直读多能小流速仪,达到了国内先进水平。本仪器采用了中规模集成电路,配以电阻式或光电式微型旋浆传感器后,即能根据传感器特性进行计数和运算。直接在荧光屏上显示出水流的平均流速和即时流速。本仪器的最大特点是,在电阻式流速仪中采用文氏振荡器,既作为载波振荡器,又作为
In order to modernize the hydraulic model testing technology, the Provincial Institute of Water Conservancy recently successfully developed a direct reading multi-function small flowmeter used to measure the hydraulic model flow rate, reaching the advanced domestic level. The instrument uses a large-scale integrated circuits, together with the resistance or photoelectric micro-propeller sensor, which can be based on the sensor characteristics of counting and computing. Directly on the screen shows the average flow velocity and instantaneous flow rate. The most prominent feature of this instrument is the use of Wen’s oscillator in a resistive flow meter, both as a carrier oscillator and as