Four-wire Isolator

4-20 mA (passive) and other DC input / 4-20 mA and other DC output / Line powered

Designed primarily for front-ending PLC/DCS systems which are mounted within the same panel or adjacent to it.
The isolator module is powered from terminals separate from signal lines.

• Test and measurement applications
• Manufacturing cells
• Monitoring systems located in-line with the manufacturing process

Four-wire Isolator with 24 V Supply

4-20 mA (active) input / 4-20 mA and other DC output / Line powered

Basic isolator designed to interface a PLC and DCS system with a field instrument.
The isolator module supplies 24 Vdc power to the field device and provides a linearized output signal if necessary.

• Remote field signal monitored by control system
• Water/wastewater treatment
• Petrochemical, tank farms, large manufacturing sites

Two-wire Ouptut Loop Powered Isolator

4-20 mA and other DC input / 4-20 mA output / output loop powered

Basic isolator designed to interface a PLC and DCS system that provides a 24 Vdc power supply with a 4-20 mA input.

• Remote field signal monitored by control system
• Water/wastewater treatment
• Petrochemical, tank farms, large manufacturing sites

With the excitation supply to the field device

Two-wire Input Loop Powered Isolator

4-20 mA input / 4-20 mA output / input loop powered

Mainly used to retrofit existing 4-20 mA process loops that need to add another instrument to the loop while maintaining isolation.

• Chart recorder or another PLC
• Backup monitoring system