SEM1020 MKII

(4 to 20) mA loop booster

The SEM1020 current loop booster is designed for use when power is available at both sides of the isolation barrier (joining two powered loops together) and hence adds additional load capacity to an existing loop.
This isolator requires no user adjustment during commissioning, apart from an initial test, to ensure it
operates correctly over its full working range.

FEATURE HIGHLIGHTS

HIGH ACCURACY
Only ± 10 uA error between the input and output signals ensures confidence in the SEM1020 products
performance.

GALVANIC ISOLATION
With 500 Vdc isolation between input and output circuits the SEM1020 is an ideal solution for removing
ground loops between (4 to 20) mA loop equipment.

JOINS POWERED INPUT AND OUTPUT (4 to 20) mA LOOPS
The SEM1020 current loop booster requires powered loop supplies on both input and output connections, enabling it to safely
join two active supplies where there is a conflict with more than one piece of equipment powering a
control loop.

BOOST A (4 to 20) mA LOOP
The loop isolator can be used to extend the range of a weak (4 to 20) mA control loop by allowing an
additional loop power supply to be added, isolated from the primary loop supply.

LOOP TRIM FUNCTION
The SEM1020 can be used to add a (4 and 20) mA fine trim function to a sensor with no trim options.