The Model 740 is a system scanning thermometer that can make temperature measurements using seven different thermocouple types (J, K, T, E, R, S, B) or millivolt measurements. With the use of the various thermocouple types, temperature measurements in the range of -200°C to +1820°C can be made. A single internal channel is standard equipment in the Model 740. The installation of a Model 7057A scanner card into the Model 740 expands the available measurement channels to nine. The measurement system is expandable to 81 channels with the addition of four Model 705s, or one Model 706 with eight scanner cards installed. Some important Model 740 features include: • Automatic scanning and data storage with HI/LO, of up to 81 channels. • 20 channels per second scanning rate. • °C or °F temperature scale. • mV measurement capabilities. • 100 point single channel data logger with HI/LO/AVG. • 24 hour clock for time day and starting a scan or log. • Open thermocouple detection. • IEEE "Smart Print" mode—talk to addressable as well as listen-only devices. • Digital calibration—no internal adjustments to be mad