一、概(gai)述
GJ—1型(xing)防爆(bao)(bao)廣播(bo)報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)系(xi)統(tong)由(you)HZBQ-3B型(xing)防爆(bao)(bao)廣播(bo)報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)器（防爆(bao)(bao)電話(hua)機）和dYH—5型(xing)防爆(bao)(bao)揚(yang)聲器組成。該(gai)防爆(bao)(bao)廣播(bo)報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)系(xi)統(tong)把廣播(bo)呼叫(jiao)(jiao)和報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)功能融為一體。把旋轉開(kai)(kai)關扳(ban)到廣播(bo)檔(dang)位，對(dui)著麥克風（話(hua)筒）講話(hua)，可(ke)以(yi)通過防爆(bao)(bao)揚(yang)聲器對(dui)現場(chang)進行廣播(bo)呼叫(jiao)(jiao)，發(fa)布生產指令；把旋轉開(kai)(kai)關扳(ban)到報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)檔(dang)位，可(ke)發(fa)出(chu)(chu)報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)信(xin)號。該(gai)防爆(bao)(bao)廣播(bo)報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)系(xi)統(tong)有(you)三種(zhong)報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)信(xin)號，以(yi)適(shi)應各種(zhong)不同(tong)的(de)報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)功能。該(gai)防爆(bao)(bao)廣播(bo)報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)系(xi)統(tong)也(ye)可(ke)同(tong)各類火災報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)控(kong)制器或(huo)其它控(kong)制器配合(he)使(shi)用，當生產現場(chang)發(fa)生事故或(huo)火災等緊急情況需要發(fa)出(chu)(chu)聲報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)信(xin)號時，火災報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)控(kong)制器送(song)來的(de)開(kai)(kai)關控(kong)制信(xin)號也(ye)可(ke)啟動(dong)報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)電路，由(you)防爆(bao)(bao)揚(yang)聲器發(fa)出(chu)(chu)警(jing)(jing)(jing)(jing)報(bao)(bao)(bao)(bao)聲。也(ye)可(ke)同(tong)手動(dong)報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)開(kai)(kai)關配合(he)使(shi)用，構(gou)成簡單的(de)防爆(bao)(bao)報(bao)(bao)(bao)(bao)警(jing)(jing)(jing)(jing)系(xi)統(tong)。
該防爆廣(guang)播報(bao)警系統連接的防爆揚聲器功(gong)率之和(he)不能超過30W。
該(gai)防爆廣播報(bao)警(jing)系統適用(yong)(yong)于石油、化工、礦山、鋼(gang)鐵(tie)等場所，用(yong)(yong)作現場指(zhi)揮和報(bao)警(jing)用(yong)(yong)。
二、防爆廣播報警器主要(yao)技術參數
1.環境溫度：－30～＋50℃
2.相(xiang)對濕度：≤90％
3.大(da)氣壓力：80～110 kPa
4.防(fang)爆等級：ⅡBT6
5.防護等級：IP54
6.供電(dian)電(dian)壓(ya)：AC220V，50Hz
7.負載：8～16Ω
8.擴音輸(shu)出(chu)功率：≤30VA（0～30W之間連續可調）
9.外型尺寸：200×280×120 mm
10.安裝尺寸：200×200 mm
11.重量：6.5 kg
12.安裝(zhuang)方式：壁掛式
三、防爆(bao)廣播報警使用方法(fa)
1.平時波(bo)段(duan)(duan)開關(guan)置于“空位”。當需要擴音廣(guang)(guang)播時，把波(bo)段(duan)(duan)開關(guan)扳(ban)到(dao)(dao)“廣(guang)(guang)播”位置，這時紅色(se)“廣(guang)(guang)播報警”指示燈閃亮(liang)，對(dui)著麥克風講話，其聲音從防爆揚聲器(qi)播放出來，實現發(fa)布生產指令目的。講話完(wan)畢，把波(bo)段(duan)(duan)開關(guan)扳(ban)回(hui)到(dao)(dao)“空位”。
2.當(dang)需要(yao)發(fa)出報(bao)(bao)(bao)(bao)警(jing)(jing)信號(hao)時(shi)(shi)，把波(bo)段開關扳到“火(huo)(huo)警(jing)(jing)”、“救(jiu)(jiu)護(hu)”或(huo)“警(jing)(jing)車”位置，發(fa)出“火(huo)(huo)警(jing)(jing)”、“救(jiu)(jiu)護(hu)”或(huo)“警(jing)(jing)車”聲(sheng)；同時(shi)(shi)，紅色“廣(guang)播報(bao)(bao)(bao)(bao)警(jing)(jing)”指示燈閃亮。用戶可以賦予“火(huo)(huo)警(jing)(jing)”、“救(jiu)(jiu)護(hu)”或(huo)“警(jing)(jing)車”不(bu)同的(de)(de)報(bao)(bao)(bao)(bao)警(jing)(jing)功能，實現多種情況的(de)(de)報(bao)(bao)(bao)(bao)警(jing)(jing)。報(bao)(bao)(bao)(bao)警(jing)(jing)完(wan)畢，把波(bo)段開關再扳回到“空位”，報(bao)(bao)(bao)(bao)警(jing)(jing)聲(sheng)停止。
3.該(gai)防(fang)(fang)爆(bao)廣播報(bao)(bao)(bao)(bao)警(jing)系統(tong)也(ye)可(ke)(ke)同(tong)各類火災(zai)報(bao)(bao)(bao)(bao)警(jing)控(kong)(kong)制器(qi)或其(qi)它控(kong)(kong)制器(qi)配(pei)(pei)合(he)使用(yong)，火災(zai)報(bao)(bao)(bao)(bao)警(jing)控(kong)(kong)制器(qi)送來的(de)開關控(kong)(kong)制信(xin)號也(ye)可(ke)(ke)啟動(dong)報(bao)(bao)(bao)(bao)警(jing)電路(lu)，由防(fang)(fang)爆(bao)揚聲器(qi)發出警(jing)報(bao)(bao)(bao)(bao)聲。也(ye)可(ke)(ke)同(tong)手(shou)動(dong)報(bao)(bao)(bao)(bao)警(jing)按鈕配(pei)(pei)合(he)使用(yong),構成簡單的(de)防(fang)(fang)爆(bao)報(bao)(bao)(bao)(bao)警(jing)系統(tong)。
四、安裝與布線
1.防爆廣(guang)(guang)播報(bao)警器(qi)結構見右(you)圖。采用(yong)壁掛式安裝結構。用(yong)M8或M10的(de)螺釘把其固(gu)定在墻(qiang)壁上(shang)(shang)或操(cao)作臺上(shang)(shang)。話筒（麥克(ke)風）放在或固(gu)定在防爆廣(guang)(guang)播報(bao)警器(qi)附近。
2.下方(fang)(fang)(fang)三(san)個進(jin)線(xian)口(kou)中，左方(fang)(fang)(fang)為(wei)電源線(xian)進(jin)線(xian)口(kou)，中間(jian)為(wei)防爆揚(yang)聲器連(lian)線(xian)進(jin)線(xian)口(kou)，右(you)方(fang)(fang)(fang)為(wei)備用(yong)進(jin)線(xian)口(kou)。以上進(jin)線(xian)口(kou)采(cai)用(yong)1/2G″管(guan)螺紋封口(kou)螺帽鎖緊電纜(lan)，也可用(yong)同樣管(guan)螺紋的防爆撓性管(guan)連(lian)接(jie)。側(ce)面的進(jin)線(xian)口(kou)為(wei)話筒（麥克(ke)風）連(lian)線(xian)進(jin)線(xian)口(kou)。
3.電(dian)源(yuan)線需接入AC220V，50Hz電(dian)源(yuan)，電(dian)源(yuan)功率≥50VA。
4.電源線和到防爆揚聲器的連線采用Φ8 mm的兩芯電纜，芯線的截面積均≥0．5mm2。
5.防爆(bao)揚聲器應(ying)安裝在距離防爆(bao)廣播報(bao)警器50米(mi)(mi)以(yi)內(nei)的地方。超過(guo)(guo)50米(mi)(mi)應(ying)適當增加連線(xian)的截面(mian)積，多不能超過(guo)(guo)100米(mi)(mi)。
6.接線(xian)(xian)：標(biao)有(you)(you)AC的(de)接線(xian)(xian)端子(zi)(zi)接AC220V，50Hz電源；標(biao)有(you)(you)YY的(de)接線(xian)(xian)端子(zi)(zi)接防爆揚聲器(qi)；標(biao)有(you)(you)MIC的(de)接線(xian)(xian)端子(zi)(zi)接話筒（麥克(ke)風(feng)），注(zhu)意話筒有(you)(you)“＋”極和“－”極之分。
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