The Furnace Master IR 3-loop controller incorporates a 3-gas analyzer and recipe programmer in a single package. It can be used for new equipment or as an upgrade for batch and continuous furnaces for carburizing, carbonitriding and other applications that require precision control of atmosphere and temperature. The controller stores 200 recipes and includes Modbus communications, up to 16 events, built-in I/R calibration and signal input from standard oxygen probes. A color touch-screen interface simplifies operator use and provides clear displays of recipes, alarms and trend data.