SEM 1020

	High Accuracy / 0.05%
	Small Size / High Packing Density
	DIN Rail Mount
	Loop Booster

LOW COST ISOLATOR THAT REQUIRES
LOOP POWER ON BOTH SIDES
SEM1020

INTRODUCTION
The SEM1020 is a low cost isolator that requires power supplie on both the input and output terminals. This must of course be provided by two power supplies (V1 & V2) isolated from each other to maintain true isolation. The most common use for the SEM1020 is to provide extra drive capabilities from an existing 4 to 20 ma current loop. The input circuitry only drops 2.7 V from the existing current loop and providing a 24 VDC isolated power supply is used on the output side, the isolator will drive up to 900 ohms. The isolator is housed inside a plastic enclosure, suitable for DIN Rail mounting. Screw terminals are provided for wire connections.

Both V1 and V2 = Can be up to 30 VDC each

Isolator Input Loop Voltage Drop = 2.7 Volts Typical

Isolator Output Loop Voltage Drop = 6 Volts Typical

GENERAL SPECIFICATIONS @ 68ºF

.Input Range	.4 to 20ma
.Isolation	.1000 VAC RMS (Flash tested to 3 KV)
.Accuracy	.0.05% (including Hysteresis and Linearity)
.Stability	.P60 ppm/ºF
.Ambient	.32-158 ºF, 10-95% RH non-condensing
.Time Constant	.0.1 sec (to 63% of final value)
.Adjustments	.Front entry Zero & Span Potentiometers

APPROVALS

.EMC	.TESTED TO:
.IEC 801-2	.Susceptibility to electrostatic discharge
.IEC 801-3	.Radiated Susceptibility
.IEC 801-4	.Susceptibility to conducted interference
.EN 55022	.Radiation emissions

MECHANICAL

.Mounting	.DIN Rail
.Connections	.Captive terminal screws
.Cable size	.12 AWG solid / 14 AWG Stranded
.Flammability	.UL94-V0, VDE 0304 Part 3 Level IIIA

DOWNLOADS
SEM1020 Instruction Manual

SEM1020 Literature

ORDER CODE

SEM1020 Low Cost Isolator