The ECOM-CN is an easy to use, handheld gas analyzer designed for basic combustion monitoring in a variety of applications. The CN is fitted with 2 gas sensors, measuring O2, CO & NO, plus Stack and Ambient Temperatures, and Stack Pressure & Draft. The CN also calculates NOx, CO2, Efficiency, Losses, Excess Air and Oxygen correction 0-20%. The instrument is housed in a robust composite case suitable for rugged field use. On board data storage for up to 500 separate readings. An IR printer port transmits data to a portable printer for on-the-spot print-outs. A large LCD displays all measured and calculated parameters at once, or can be "zoomed" to show only those particular measurements the operator wants to see. The tactile keypad guides the operator through the various functions of the analyzer. The ECOM-CN sample conditioning system consists of a high flow pump and radiant gas cooler with moisture trap. An automatic shut-off activates when the gas cooler filter becomes saturated. Another unique feature of the CN is an Automatic and Manual CO bypass function which protects the CO sensor from over exposure.