PR 3109 Signal Isolation Converter / Splitter

The PR 3109 Signal Isolation Converter / Splitter is a precision signal conditioning module engineered to isolate, convert, and distribute standard DC analog signals in demanding industrial environments. Designed for PLCs, DCS, and SCADA systems, this compact DIN-rail device provides galvanic separation of both current and voltage inputs, effectively removing ground loops and protecting sensitive control equipment from noise, transients, and interference. The 3109, from PR electronics, features an integrated splitter functionality to deliver one input signal to two independent isolated outputs, thus enabling multiple measurement or control points to use the same source without compromising signal integrity.

• Galvanic separation of analog current and voltage signals.
• A competitive choice in terms of both price and technology for galvanic isolation of all signal types to SCADA systems or PLC equipment.
• High 4-port isolation provides surge suppression that protects the control system from transients and noise and eliminates ground loops.
• All terminals are over-voltage protected, polarity protected and short-circuit protected.
• The device can mount in Safe area or in Zone 2 / Division 2 hazardous areas and features approval for marine applications.

PR 3109 Signal Isolation Converter and Splitter from PR electronics

The PR 3109 features a slim 6.1 mm housing, allowing high-density installation, up to 163 units per meter, in tight control cabinets and panels. Pre-calibrated measurement ranges and DIP switch configuration simplify setup and eliminate the need for external calibration tools. With a fast response time (<7 ms), excellent signal-to-noise ratio (>60 dB), and high isolation rating of 2.5 kVAC, it ensures reliable, real-time performance across a wide ambient temperature range -13 to 158˚F (-25 to 70˚C).

• Flexible 24 VDC (±30%) supply via power rail or connectors.
• Factory-calibrated measurement ranges.
• Fast response time < 7 ms.
• Excellent signal/noise ratio > 60 dB.
• High galvanic isolation of 2.5 kVAC.
• Inputs and outputs are floating and galvanically separated.
• A green front LED indicates normal operation and malfunction.
• Wide ambient temperature range: -13 to 158˚F (-25 to 70˚C).

Easy Mounting, Installation, and Programming

All terminals are protected against over-voltage, reverse polarity, and short circuits, and the unit is suitable for installation in Safe, Zone 2, or Division 2 areas, including marine applications. A front-panel LED provides clear operational status.

• Easy configuration via DIP switches.
• Units can be mounted side by side, horizontally and vertically, without air gap on a standard DIN rail, even at 158˚F (70˚C) ambient temperature.
• Units can be supplied separately or installed on PR 9400 power rail.