Status SEM1020 - 4 to 20mA Loop Isolator / Booster

• (4 to 20) mA 
• MULTIFUNCTION ISOLATE, BOOST, TRIM
• GALVANIC ISOLATION 500 VDC, 1 KV FLASH TESTED
• HIGH ACCURACY
• 12.5 mm WIDE

The SEM1020 isolator is designed for use when power is available at both sides of the isolation barrier. This isolator requires no user adjustment during commissioning, apart from an initial test, to ensure it operates correctly over its full working range. Minor adjustments can be made to the calibration of the device by means of the two-front panel accessible calibration potentiometers. Incorrect connection in the loop will not damage the device as long as the specified maximum currents /voltages are not exceeded.

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 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 SEM1020 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.