一、特点袖珍式直读流速计由计算器和简单的接口电路组成。利由“声宝EL—8158”计算器的功能,能方便地实现流速直读。接口电路由几片集成块和一些分立元件组成。仪器具有体积小(130×78×50mm~3)、重量轻(不到0.5Kg)、耗电省(接口电路约几毫安)、造价低(接口电路成本约30元左右,计算器为几十元)、操作简单、携带方便等优点。 First, the characteristics of pocket-type direct-reading flowmeter by the calculator and a simple interface circuit. Benefit from the “treasure Po EL-8158” calculator function, can easily achieve direct-flow velocity reading. Interface circuit consists of a few pieces of integrated blocks and some discrete components. The instrument has a small size (130 × 78 × 50mm ~ 3), light weight (less than 0.5Kg), power saving province (interface circuit about a few milliamps), low cost (interface circuit costs about 30 yuan, the calculator is a few Ten yuan), simple operation, easy to carry and so on.