Fluke 712B measures and simulates 13 RTD types and resistance. A separate isolated channel checks a transmitter’s 4–20 mA output while the calibrator sources a temperature signal. Configurable 0% and 100% endpoints, 25% steps and a linear ramp support multi-point loop checks. Resistance measurements support 2-, 3- and 4-wire connections; the base accuracy applies to 4-wire measurements. Temperature limits and accuracy depend on the selected RTD type. A backlit dual display, retained settings and a magnetic hanger support on-site calibration.