智能型溫度變送器，SBWZ-2481/24SI

主要特點：智能型溫度變送器，SBWZ-2481/24SI
●  采用硅橡膠或環氧(yang)樹脂密封結構，因此耐(nai)震(zhen)、耐(nai)濕，適合(he)在現場環境中安裝使用；
●  現(xian)場安裝(zhuang)在熱電(dian)偶，熱電(dian)阻的(de)接(jie)線(xian)盒內(nei)使用(yong)，直接(jie)輸(shu)(shu)出(chu)4-20mA、0-10mA的(de)輸(shu)(shu)出(chu)信號(hao)。這(zhe)樣既節約了昂(ang)貴的(de)補償導線(xian)費用(yong)，又(you)提(ti)高了信號(hao)遠距(ju)離傳輸(shu)(shu)過程中的(de)抗干擾能力；
●  熱電偶變送器具有冷端自動補償(chang)功(gong)能(neng)；精度(du)高、功(gong)耗低，使用環境溫度(du)范(fan)圍(wei)寬，工作穩定可靠；
●  適用范(fan)圍廣,即可以與(yu)熱電偶,熱電阻形(xing)成一體化現場(chang)安裝結構,也(ye)可以作為功(gong)能模(mo)塊安裝在檢(jian)測設備(bei)中和儀表盤上使用:
工作原理：
熱電(dian)(dian)(dian)(dian)偶或熱電(dian)(dian)(dian)(dian)阻傳(chuan)感器(qi)(qi)(qi)被(bei)溫度轉(zhuan)(zhuan)換成電(dian)(dian)(dian)(dian)信號(hao),再將信號(hao)送(song)入變送(song)器(qi)(qi)(qi)的(de)(de)輸(shu)入網絡,該網絡包含調零和熱電(dian)(dian)(dian)(dian)偶補償等(deng)相(xiang)關電(dian)(dian)(dian)(dian)路。經(jing)調零后的(de)(de)信號(hao)輸(shu)入到運(yun)算放大器(qi)(qi)(qi)進(jin)行信號(hao)放大，放大的(de)(de)信號(hao)一(yi)經(jing)V/I轉(zhuan)(zhuan)換器(qi)(qi)(qi)運(yun)算處理(li)(li)后以DC4-20mA電(dian)(dian)(dian)(dian)流輸(shu)出(chu)；另一(yi)路經(jing)A/D轉(zhuan)(zhuan)換器(qi)(qi)(qi)處理(li)(li)后到表頭顯示(shi)。變送(song)器(qi)(qi)(qi)的(de)(de)線(xian)性化電(dian)(dian)(dian)(dian)路有兩(liang)種，均采用(yong)反饋(kui)方式(shi)。對熱電(dian)(dian)(dian)(dian)阻傳(chuan)感器(qi)(qi)(qi)，用(yong)正(zheng)反方式(shi)校正(zheng)，對熱電(dian)(dian)(dian)(dian)偶傳(chuan)感器(qi)(qi)(qi)，用(yong)多(duo)段折線(xian)逼近(jin)法進(jin)行校正(zheng)。一(yi)體化數字顯示(shi)溫度變送(song)器(qi)(qi)(qi)LCD顯示(shi)的(de)(de)采用(yong)兩(liang)線(xian)制方式(shi)輸(shu)出(chu)。
技術參數
1.輸入(ru)信號(hao)：熱(re)電(dian)偶：K、E、J、B、S、T、N；熱(re)電(dian)阻：Pt100、Cu50、 Cu100、（三(san)線制(zhi)、四線制(zhi)），智能型溫度變送器的輸入(ru)信號(hao)可通過PC機或手(shou)操器任意設置；
2.輸(shu)出信(xin)(xin)號：在量程范圍(wei)內(nei)輸(shu)出DC4-20mA電(dian)流信(xin)(xin)號，與熱電(dian)偶、熱電(dian)阻的(de)輸(shu)入信(xin)(xin)號成(cheng)線(xian)(xian)性或(huo)與溫(wen)度(du)(du)成(cheng)線(xian)(xian)性。智能型溫(wen)度(du)(du)變送(song)器輸(shu)出DC4-20mA電(dian)流信(xin)(xin)號同時疊加(jia)符(fu)合HART標準(zhun)協議通信(xin)(xin)信(xin)(xin)號；
3.基本(ben)誤(wu)差：0.5%FS；0.2%FS；智能型0.2%FS;
4.接線方(fang)式：二線制(zhi)；三線制(zhi);
5.顯(xian)示方式：四(si)位(wei)LCD顯(xian)示溫度,智(zhi)能型四(si)位(wei)LCD可通過(guo)PC機(ji)或手操器設定使之顯(xian)示現場溫度，傳感器值，輸出電流和百分比(bi)例中的任一種參數;
6.工(gong)作(zuo)電壓(ya)：普(pu)通型12∽35V DC；智能型12V∽45V DC；額定工(gong)作(zuo)電壓(ya)為24V DC;
7.允許負(fu)載(zai)電(dian)(dian)(dian)阻：500Ω（24VDC供電(dian)(dian)(dian)）;極限負(fu)載(zai)電(dian)(dian)(dian)阻R（max）=50（Vmin-12）,例如在(zai)額(e)定工(gong)作電(dian)(dian)(dian)壓24V DC時,負(fu)載(zai)電(dian)(dian)(dian)阻可0-600Ω范圍內選擇使(shi)用。
8.工(gong)作(zuo)環境：
a：環境(jing)溫度(du) -25∽80℃（常規型）
            -25∽70℃（數顯(xian)型(xing)）
b：相對溫(wen)度 5%∽95%
c：機械振(zhen)動f≤50HZ,振(zhen)幅≤0.15mm
d：無(wu)腐蝕氣體(ti)或類似(si)的環境;
9.溫度影響系數(shu)：δ≤0.05%/℃
裝配式不(bu)銹鋼(gang)接線(xian)盒(he)熱電(dian)偶WRR-120B，WRR-121B，WRR₂-120B，WRR₂-121B，WRP-120B，WRP-121B，WRP₂-120B，WRP₂-121B，WRN-122B，WRN-123B，WRN₂-123B，WRR-130B，WRR-131B，WRR₂-130B，.WRR₂-131B，WRP-130B，WRP-131B，WRP₂-130B，WRP₂-131B，WRN-133B，WRN₂-133B，WRN-130B，WRN₂-130B，WRE-130B，WRE₂-130B，WRN