| SD31 Specifications Cont. Controller • Microprocessor based user-selectable control modes • Single universal input, up to three outputs • Control sampling rates: Input = B.5Hz, Display = 10Hz and Outputs = 6.5Hz Operator Interface • Single 4 digit. 7 segment LED display • "Set" infinity and up down keys • Isolated EIA-485 Modbus™ serial communications. 9600. 19.2K or 38.4K baud rates Wiring Termination-Touch Safe Terminals • Input power and coniroi outputs 12 to 22 AWG • Sensor inputs and process outputs 20 to 28 AWG Universal Input • Thermocouple, grounded or ungrounded sensors • RTD 2-or 3-wire, platinum, 100Q @ 0°C calibration to DIN-curve (0.00385 QIQI'C) • Process. 0-20mA @ 100q. or 0-10v=(dc) @ 20kli input impedance; Scalable • Inverse scaling • >20MD input impedance • Maximum of 20£l source resistance Allowable Operating Range |