KEP SC-II
Current to Current Loop Isolator

4-20 mA Input (10-50 mA optional)
2-Wire, 4-20 mA Output (10-50 mA optional)
Two Year Warranty
Loop Powered
Input & Output LED Indicators
Various Mounting Styles

KEP SC-II Shown

Product Information
Datasheet	68 KB
Manual	77 KB
Ordering Info
PDF Help

The SC-II loop powered isolator is a signal conditioner whose function is to provide a retransmitted, galvanically isolated 4-20mA output signal in response to isolated 4-20 analog input. The loop powered isolator may be applied in a similar manner asa conventional two wire transmitter.

The SC-II 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 to10,000 Hz frequency signal by a Current to Frequency Converter. This frequency signal is then transmitted across an opto-isolator to the output stage.

The output stage derives it’s power from the output current loop. The output stage converts the 0-10000 Hz frequency signal into a current flowing in the output loop equal to that flowing in the input current loop. The 10-50 mA range options are provided to enable the unit to perform range conversions as well as signal isolation.

General Specifications
Analog Input	Available Ranges:	4-20 mA (10-50 mA optional)
	Input Type:	Two Wire, Loop Powered
	Equivalent Input Impedance:	525 Ω on 4-20 mA range 210 Ω on 10-50 mA range
	Operational Range:	3.5 - 33 mA
	Over Current Protection:	2.5 times rated span
	Isolation Voltage:	500 V
	Input Loop Indicator:	LED illuminates when loop is powered by proper polarity
Analog Output	Accuracy:	± 0.10% Span
	Output Type:	Two Wire, Loop Powered
	Range:	4-20 mA (10-50 mA optional)
	Compliance Voltage:	10 to 40 VDC
	Loop Burden:	< 10 VDC
	Time Controls:	Zero & Span
	Linearity:	<± 0.002% Span/Volt
	Temperature Effect:	< 200 PPM/C°
	Noise Content:	< 0.2% Span
	Overcurrent Limiting:	35 mA
	Output Loop Indicator:	LED illuminates when output loop is powered by proper polarity

Ordering Information
Model	Description	Buy Online	Price
SCIIB	KEP SC-II-B Current to Current Loop Isolator with Nema 4x Mounting		$212.00
SCIIC	KEP SC-II-C Current to Current Loop Isolator with Explosion Proof Enclosure		$389.00
SCIID	KEP SC-II-D Current to Current Loop Isolator with DIN Rail Mount		$158.00
Included Accessories
	1 - Users manual	Included
Options
SCIIET	KEP SC-II-ET Extended Temp: -4� to 185� F (-20� to 85� C)		$28.00
SCIIT	KEP SC-II-T Third Conduit Entry in EX-Proof Housing		$26.00
SCIIH2	KEP SC-II-H2 0.875" Hole for mounting style B		$11.00
SCIIHF2	KEP SC-II-HF2 0.5" Female NPT Hub Fitting		$26.00
SCIIH3	KEP SC-II-H3 1.125" Hole for mounting Style B		$11.00
SCIIHF3	KEP SC-II-HF3 0.75" Female NPT Hub Fitting		$26.00
Optional Accessories
DR4	KEP DR-4 4" DIN Rail		$6.00

KEP SC-II Current to Current Loop Isolator

KEP SC-II
Current to Current Loop Isolator