9167 series Ex i isolating repeaters operate without auxiliary power and can be used for the intrinsically safe operation of control valves, I/P transducers, analogue indicators and fire or gas detectors, for example.
They have one or two channels and issue HART signals (0/4 to 20 mA) from the analogue output. They transmit superimposed HART communication signals in both directions.
Features
Compact, loop-powered one- and two- channel Ex i output isolating repeater