According to national stsandard GB5468-91 the duse emission be measured at the condition during over 70% of capacity load of the boiler.

• 91中规定:在锅炉烟尘测试中,要求同时测定锅炉运行出力,并规定锅炉运行出力达到该锅炉额定负荷70%25以上时,监测数据才能有效。