Ashcroft AM2-RT [AM2-RT2] RTD Probe Interface Module for Hand Held Calibrator. Ashcroft AM2-RT  RTD interface module for Hand Held Calibrator. Use with Pt1000 RTD probe(s) and other RTDs with resistance outputs of 4000 ohms or less. The Ashcroft ATE-2 provides accurate temperature measurement when using the AM2-RT module with an RTD probe. This system supports the most common RTD’s without requiring operator input of probe characterization data; each module comes factory-programmed with standard curves for Pt100 (385 & 392), Ni 120, Cu 10 and temperature probes. The setup menu allows the operator to choose configurations for 2, 3 or 4 wire RTD probes and decimal resolution. The temperature measurement system includes the ability to automatically track minimum / maximum values.