HONEYWELL DCS卡件 Honeywell 621-0020RC Universal Analog Input Module PLC
HONEYWELL DCS卡件 Honeywell 621-0020RC Universal Analog Input Module PLC
HONEYWELL DCS卡件 Honeywell 621-0020RC Universal Analog Input Module PLC
熱量表中的溫度傳感器和流量傳感器的作用及組合:
溫度傳感器和流量傳感器是熱量表中*的器件,熱量表中的積算儀便是通過搜集這兩個傳感器的信號來核算熱交換系統(tǒng)所獲得的熱量。
熱量表中的溫度傳感器是搜集水的溫度并宣告溫度信號的部件,常用的溫度傳感器是由鉑電阻組成,它的特性是溫度越高阻值越大,電阻的大小可以通過導線傳到很遠的當?shù)厝y量,根據(jù)鉑電阻的改動我們就可以得到溫度的改動。當然溫度傳感器并不是這一種,也可以選用其它種的傳感器。
熱量表中的流量傳感器是搜集水的流量并宣告流量信號的部件,常用的有孔板差壓式、旋渦式、渦輪式等。渦輪式流量傳感器是一個小水輪發(fā)電機,和水力發(fā)電用的水輪發(fā)電機是一個道理。只不過非常細巧而簡略,僅僅是由管道里的一個葉輪和管外的線圈所構成。葉輪上有一小塊磁鐵,當葉輪被水激動而旋轉(zhuǎn)時,線圈切開磁力線就會宣告交流信號來。管道里的水流量越大,當然葉輪轉(zhuǎn)得越快,宣告的交流頻率就越高。用頻率來代表流量,這樣就簡略傳到別處去了,所以這才稱得上是傳感器。
通過這些傳感器測量的數(shù)據(jù)加上微處理機的算法就可以核算到每月的供暖費用是多少,這些數(shù)據(jù)還能跟銀行聯(lián)網(wǎng),省去現(xiàn)金繳費的費事。
熱量表流量傳感器和溫度傳感器安裝方法
1.一次計量系統(tǒng):這種安裝情況指在整個供暖系統(tǒng)中,只有這一個計量系統(tǒng)。
2.二次計量系統(tǒng):和一次系統(tǒng)不同的是安裝位置處的計量屬于第二次計量。
3.家庭用戶中的單獨供暖計量:隨著分戶計量的普及和供暖節(jié)能工程的推進目前這種安裝方法比較常見。
4.垂直供暖的分配計量:主要用于垂直供暖系統(tǒng)中的供暖計量。
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