M100 RTD Temperature Transducer Selection Guide M100-RTD RTD temperature measurement Typical Applications The M100-RTD monitors the resistance of either a 100 Ohm Platinum, or a 120 Ohm Nickel RTD. The RTD's resistance increases as the temperature rises. The resistance change is detected by the M100-RTD which provides an output corresponding to the temperature being measured. The temperature versus resistance values, are provided by the supplier of the RTD used. RTD measurement of temperature is used in large transformers and large motors, to ensure winding temperatures do not rise to a level that would damage them. Ordering Information Product Code:RTD:Temp:Output:Auxiliary:Frequency M100-RTD Pt 100 0-250°C 5 mA 230V 50Hz Options 1. Non standard inputs / outputs only as far as technically acceptable. 2. A.C. Auxiliary in range 57.7 to 450 volts 3. Calibration at temperature other than 23°C Technical Specification Input 2 or 3 wire input Platinum Pt 100 Ohm RTD min. span 20 Ohms ...max. span 200 Ohms Nickel Ni 120 Ohm RTD min. span 24 Ohms....max. span 240 Ohms Output Rated value mA - 0-1/5/10/20 & 4-20mA Rated value volts - 0-5 / 10 & 1-5 V Accuracy Class ± 0.5% Adjustments Zero - ± 2% Span - ± 10% Auxiliary A.C. Voltage - 115 / 230 / 400 V (± 25% / 45-65 Hz / < 2VA) D.C. Voltage - 24 / 48 / 110 V (± 20% / galvanically isolated / <3W) Weight and Case Approx. 0.3 kg. 55mm case Insulation IMPORTANT: No isolation is provided between input and output