列出了在线煤炭分析仪评估的推荐做法。它定义了各种类型的分析仪，并描述了它们的操作。它还描述了适当的统计评估技术，并就在线分析仪的评估和校准维护程序提出了具体建议。

Sets out the recommended practices for the evaluation of on-line coal analysers. It defines various categories of analysers and describes their operation. It also describes appropriate techniques of statistical assessment and makes specific recommendations concerning the procedures for evaluation and calibration maintenance of on-line analysers.