nt face="楷體" size="4">ng>二、主要規格和技術參數ng>ng>1、使用環境條件ng>
ng>溫度: -5~40℃ng>
ng>濕度: 不大於85%ng>
ng>大氣壓力:86.0~106kPa ng>
ng>電源: AC 220V±10%;50Hz±1Hzng>
ng>2、測量范圍ng>
ng>HC: 0~10000 10-6(ppm)vol CO:0~10.0 10-2(%)volng>
ng>CO2:0~20.0 10-2 (%) vol O2:0~25.0 10-2(%)volng>
ng>NO: 0~5000 10-6(ppm)vol 轉速:0~9999rpm ng>
ng>油溫:0~120℃ng>
ng>3、取樣方式ng>
ng>尾氣:直接取樣。取樣管長度5m,取樣探頭長度900mm。ng>
ng>油溫:溫度傳感器插入發動機機油尺孔中,插入長度與油標尺長度相同,用橡膠塞堵死,以防機油噴出,導線長度:5m。ng>
ng>轉速:非接觸型測量方法,隻要靠近汽油發動機的高壓軟線距離不大於20cm,即可測量汽油發動機的轉速。ng>
ng>4、預熱時間:10分鐘ng>
ng>5、分辨率:ng>
ng>CO: 0.01% volng>
ng>HC: 1ppm vol 正己烷當量ng>
ng>CO2: 0.1% volng>
ng>O2: 0.02% volng>
ng>NO: 1ppm volng>
ng>轉速:1rpmng>
ng>油溫:0.1℃ng>
ng>6、示值允許誤差ng>
ng>CO: ±0.06% vol或±5%相對誤差ng>
ng>HC: ±12ppm vol或±5%相對誤差ng>
ng>CO2: ±0.5% vol或±5%相對誤差ng>
ng>O2: ±0.1% vol或±5%相對誤差ng>
ng>NO: ±25ppm vol或±4%相對誤差ng>
ng>轉速: ±10rpm(0~9999rpm)ng>
ng> ±1%測量值 (>10000rpm)ng>
ng>7、時間穩定性ng>
ng>經預熱後,機器4h的零位漂移和量距漂移不超過其示值誤差。ng>
ng>8、重復性ng>
ng>機器的示值重復性不大於其示值允許誤差的絕對值的1/3。ng>
ng>9、輸出信號ng>
ng>數字量:RS232串行通訊。ng>
ng>10、尺寸(長*寬*高):420*320*250(mm)ng>
ng> 重量:9.8kgng>
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