適用范圍(wei)
煙霧(wu)(wu)傳感(gan)器適用于(yu)(yu)煤礦井下具(ju)有瓦(wa)斯、煤塵爆炸危險的場所但其(qi)供(gong)電電源必須采用本(ben)質安型(xing)電源供(gong)電,可應用于(yu)(yu)煙霧(wu)(wu)超限報警、防(fang)滅火煙霧(wu)(wu)信號(hao)提供(gong)及煙霧(wu)(wu)超限監測。
工(gong)作原理
煙霧傳(chuan)(chuan)感器是由(you)專用煙霧傳(chuan)(chuan)感器MQ-214構(gou)成的高精度(du)可燃氣體/電(dian)(dian)(dian)壓(ya)轉(zhuan)換器、V/V轉(zhuan)換、電(dian)(dian)(dian)壓(ya)比較(jiao)器、可控(kong)報警及(ji)輸(shu)出(chu)電(dian)(dian)(dian)路等組成;MQ-214傳感器輸(shu)出(chu)煙霧(wu)信(xin)(xin)號成正比的電(dian)(dian)(dian)壓(ya)信(xin)(xin)號,經電(dian)(dian)(dian)壓(ya)比較(jiao)器及(ji)數字電(dian)(dian)(dian)路處理輸(shu)出(chu)煙霧(wu)超限報警信(xin)(xin)號。
主要技術參數
1.防爆型式:礦(kuang)用本(ben)安型,防爆標志(zhi):Exib IMb;
2. 本安參數Ui: 13.7VDC;Ii:85mA;Ci:0.2uF;Li:0uH;
3. 額定(ding)工作電壓: 12VDC;
4. 工作電流: ≤85mA;
5. 輸出(chu)信號(hao):高電(dian)平(ping)≥6.0V,低電(dian)平(ping)≤0.5V;
6. 煙(yan)霧傳感器響(xiang)應(ying)時間:≤15s;
7. 煙霧報(bao)警值:5%obs/m;
8. 電氣間(jian)隙≥2mm,爬電距離(li)≥2mm。
9. 外型尺寸(cun): φ132mm×159mm;