The SC-FI is a two wire frequency to analog converter that converts a pulse rate input into a 4-20mA output signal proportional to frequency or rate. The input pulse rate is amplified and filtered by the input signal conditioning circuitry. Two forms of input signal conditioning are provided, one for magnetic pickups or contact closure inputs and the other is an isolated pulse input (depending on order code).
The amplified frequency signal is then converted to an analog signal using a precision frequency to analog converter. The output stage derives it’s power from the output current loop. The output stage converts the analog input signal into the desired output range. Multi-turn potentiometers provide for the necessary trimming of span and zero.
