Ace gas analysers manufactures combustion efficiency monitor. Model ace minicem 7000 is a hand-held combustion efficiency monitor for measuring the combustion efficiencies of boilers, ovens, etc. The unit uses the latest smd/vlsi technology. This model of the combustion efficiency monitor displays the o2, co [optional], stack temperature and gives derived values of co2 and combustion efficiency. The unit can be programmed for various fuels such as ldo, hsd, lsrs, fo, natural gas and coal. It can also be programmed for non-standard fuels. The sampling system consists of a handy ss 316 probe suitable for temperatures up to 600°c and filter for stack gas particulate matter. The combustion efficiency monitor has a capability of storing and recalling 100 sets of readings and the same can be interfaced with a computer through a rs 232 port. Minicem 7000 is a pocket sized dry cell operated low cost user-friendly analyser from ace gas analysers. This combustion efficiency monitor is also a rugged tool, which finds application in various process industries, energy audits and environmental monitoring.