PRO 111 and PRO 115 are professional hand-held measuring devices of the top class for 4-conductor Pt100/Pt1000 sensors with extensive equipment, high robustness and ease of use for a safe and reliable use. The PRO 115 is also data-logging-enabled.SensorEach 4-wire Pt100/Pt1000 standard sensor can be connected, as long as it is equipped with an M12-plug.The high-precision, temperature-compensated analog front end of the meter does not add any significant error to the measurement chain, WAS makes the device a cost-effective, high-quality reference system.The smart polynomial sensor linearization brings out the best from your Pt100 temperature sensor and offers all relevant possibilities for calibration and adjustmentDisplayThe multi-lingual dot-matrix/clear-text LCD-display has an ergonomic wide-angle visibility from daylight to darkness thanks to the background lighting and shows either large scale values or the diagram of a variable measurement profile.The HOLD function allows you to f