Used with most commercial gases. Wide turndown range, maintaining pre-set air-gas ratio, for single or multiple burner arrangements.

By using search technique for dynamic self-optimization, the on-line adjusting of air-gas ratio of combustion of soaking pits is achieved successfully.

This paper presents a new method of detecting whole premixing combustion air-gas ratio, describes the principles and operational steps of the method, and analyzes its application prospect.