1747-L552
1747-L552
3.標(biāo)度變換
標(biāo)度變換的實(shí)質(zhì)就是zui程變換,它使儀表的顯示數(shù)字能直接表征被側(cè)參數(shù)的工程量.即直接顯示溫度、壓力、流zui或液位,所以是一個(gè)盆綱的還原。因?yàn)闇yzui位與工程值之間往往存在一定的比例關(guān)系,側(cè)盤值必須乘上某一常數(shù),才能轉(zhuǎn)換成數(shù)字式儀表所能直接顯示的工程位。標(biāo)度變換可以在模擬部分進(jìn)行,也可以在數(shù)字部分進(jìn)行。
4.計(jì)數(shù)顯示
數(shù)字顯示裝置通過計(jì)數(shù)器對所接受的脈沖信號(hào)進(jìn)行計(jì)數(shù),再經(jīng)譯碼器等. 將被測zui結(jié)果用十進(jìn)制數(shù)顯示出來,以便操作人員能直接精確地讀取所需的數(shù)據(jù).常用數(shù)字顯示器有輝光數(shù)碼管顯示器,發(fā)光二極管顯示器和液晶顯示器等。
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