Land Combustion, has developed the Model 9000 Carbon Monoxide Monitor. The company says this analyser is outstandingly reliable in a wide range of applications. The micro-processor based cross duct flue gas analyser operates using the principle of infrared absorption by CO in a selected waveband. Long life infrared sources ensure longer life with minimal maintenance. Model 9000 offers the simplest and most effective method of Carbon Monoxide monitoring. Continuous self diagnostics, automatic in-situ calibration, simple selection of field measurement parameters, easy-to-use keypad and display ensure immediate results and simple installation. Wide measurement ranges and duct path lengths allow total flexibility, and where the flue gases are extremely dirty a highly efficient advanced air purge system maintains optimum measurement performance.