• Shri Sales & Services

Frequency To Current Loop Isolator

Shri Sales & Services offers a frequency to current loop isolator from KEP – USA. Features: magnetic pick up or contact enclosure i/p; optically isolated input; 10 kHz max I/P frequency; standard 2-wire 4-20 mA O/P; two year warranty; loop powered; and various mounting systems. SC-FI is a loop powered, two wire frequency to analog converter, which converts a pulse rate input into 4-20 mA o/p signal proportional to frequency or rate. The input pulse rate is amplified and filtered by the input signal conditioning circuitry. Two forms of i/p signal are provided, one for magnetic pick-ups or contact closure inputs and the other is an isolated pulse input. The amplified frequency signal is then converted to an analog signal using precision frequency to analog converter. The o/p stage derives its power from the o/p current loop. The o/p stage converts the analog input into the desired o/p range. Multifunction potentiometers provide for the necessary trimming of Span and Zero. Specifications: Type – opto-isolated; impedance – 3.3 kohm; logic – 1: 4-30 V DC, 0: 1 V DC; frequency – 0 to 10000 Hz; reverse polarity/over voltage protection; isolation voltage – 500 V; fast transient immunity – 500 V; max rise/fall time – no limit; magnetic pickup input – differential input/input impedance – 10 kohm; frequency response – 0-3500 Hz; trigger sensitivity – 30 mV p-p; over voltage protection – ±30 V DC; contact closure input; sensor compatibility – requires an isolated, contact closure; maximum contact voltage – 5 V; maximum contact current – 0.12 mA; nominal pull-up resistance – 47 kohm to 5 V DC; frequency range – 0-100 Hz; and DIN rail/NEMA 4X/explosion proof housing available.