Self-Calibrating 3-Channel Temperature Measuring Device with PT1000 Sensors

A compact temperature measuring device with three channels is presented. In order to achieve high accuracy, PT1000 sensors were chosen in combination with a calibration procedure, which results in a combined standard uncertainty of 0.3 degrees Celsius. The measurement results are available as analog values at the BNC output and as numerical values with min/max capturing on the display with touchscreen functionality.