The KEP SC-IF signal conditioner is a loop power isolator whose function is to provide a 0 - 10kHz frequency output signal in response to a 4- 20mA analog input.
The SC-IF appears to the input loop as a series shunt resistor. A small sense resistor is used to measure the input current. The input loop derives it's power from the input current loop. This input current signal is then scaled and converted to a 0 to 10,000 Hz frequency signal by a Current to Frequency Converter. This frequency signal is then transmitted across an optoisolator to the output stage.
The 10-50 mA range option is provided to enable the unit to perform range conversions as well as signal isolation.
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