The design requirements are:
- Transmitter with a current output
range of 4 mA to 20 mA to represent a process variable signal
- Out-of-range current output capability below 3.6 mA and
above 21 mA for NAMUR NE43 sensor fault signal levels
- Total on-board current less than or equal to 3 mA to operate
the board, but allow for low out-of-range outputs
- Operation with standard
industrial automation supply voltages from 15 V to 36 V
- Current and voltage outputs with
TUE less than 0.5% at 25°C after calibration