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烟气参数监测子系统

发布时间:2014-12-16 浏览量:

   
 
■ 工作原理

  概  述
  烟气参数监测子系统可对烟气温度、压力、流速、氧量、湿度等进行实时测量。烟气参数变送器输出4-20mA模拟信号,并由单片机进行采集,然后转换成数字量,通过RS-485总线传输给数据采集仪,最远传输距离可达1km。

  【性能特点】
  ◆ 4~20mA模拟和RS485数字输出,MODBUS标准协议,符合现场数据远传要求。
  ◆ 数据柜采用双层钢板中间夹隔热材料的方式,具有隔热、通风等功能。满足避雨、雪、沙尘等现场恶劣环境的要求。
  ◆ 具有定时自动反吹功能,防止烟尘堵塞皮托管。
  ◆ 16路D/O输出通道,满足现场控制的需要。
  ◆ 8路A/D输入,可扩展其它模拟量的信号采集。
  ◆ 工作电源:AC220V±10%,50Hz。
 


■ 产品特点

  【技术指标】

    测量参数                            测量原理                                                      技术指标
            温度                            铂电阻变送器                                           测量范围:0~500℃
                                                                                                           准确度:±2℃
            压力                            压力变送器                                              测量范围:-1kPa~+1kPa(可选择)
                                                                                                           准确度:±1%F.S
           流速                            皮托管差压法                                            测量范围:0~40m/s
                                                                                                           响应时间:2S
                                                                                                           精密度:±5%F.S
           氧量                               氧化锆法                                               测量范围:0~10、0~25%
                                                                                                           响应时间:≤5S
                                                                                                           重复性:±0.5%F.S
                                                                                                           工作温度:<900℃
            湿度                            湿度变送器                                              测量范围:0~20%
                                                                                                           测量精度:±1%(0~90%)
                                                                                                           响应时间:15S
                                                                                                           工作温度:-40~180℃

  【设备图片】