The Rosemount CX1100 in-situ oxygen analyzer (photo) is said to be the first high-performance, zirconia-cell-based combustion-control system designed to improve energy efficiency and meet environmental regulatory requirements for small and midsize boilers. It features the same sensor reliability found in large industrial technology, but the system is built to the requirements of boilers used in smaller applications. The zirconia sensing cell and the all-welded probe provide a long sensor life. The combustion-control system requires no reference gas, which keeps installation and maintenance costs low. — Emerson, St. Louis, Mo.