扇葉掃描式光電對(duì)管數(shù)字轉(zhuǎn)速儀,將掃描山扇葉安裝在電機(jī)轉(zhuǎn)軸上,隨著電機(jī)轉(zhuǎn)軸轉(zhuǎn)動(dòng),逐次掃描光電對(duì)管,產(chǎn)生計(jì)數(shù)脈沖,輸入到電子計(jì)數(shù)器,通過(guò)電子計(jì)數(shù)器上的顯示屏顯示出讀數(shù),即可知道電機(jī)的轉(zhuǎn)速。本實(shí)用新型可以對(duì)單個(gè)電機(jī)的轉(zhuǎn)速隨時(shí)隨地進(jìn)行測(cè)量;適用...