PR 3118 Bipolar Isolated Converter / Splitter

The PR 3118 Bipolar Isolated Converter / Splitter is a versatile and precise signal conditioning module that's ideal for industrial process control and measurement systems. The 3118, from PR electronics, converts bipolar voltage and current process signals into two isolated analog outputs, thus allowing one input to drive dual unipolar signals. This module is ideal for feeding multiple controllers or recording systems from a single source.

Built for reliability and accuracy, the PR 3118 Bipolar Isolating Converter delivers excellent performance, with accuracy better than 0.05 % of span, and a fast response time of less than 7 ms. Its high 4-port galvanic isolation (2.5 kVAC) protects equipment from ground loops, noise, and transients, while floating inputs and outputs ensure stable signal transmission in harsh environments.

• Isolating converter and splitter for signal conversion of standard bipolar analog process signals into two individual unipolar analog signals.
• High 4-port isolation provides surge suppression that protects the control system from transients and noise and also eliminates ground loops.
• The analog output can easily configure and program to be bipolar in the ranges ±10 mA and ±20 mA.
• All terminals feature protection against over-voltage, polarity, and short-circuit.
• The device can mount in Safe area or in Zone 2 / Division 2 hazardous areas and features approval for marine applications.

PR 3118 Bipolar Isolated Converter / Splitter from PR electronics

Flexible DIP-switch selection lets users configure input and output ranges, including bipolar ±10 mA and ±20 mA, without external tools. The slim 6.1 mm DIN-rail housing supports high-density installations with up to 163 units per meter. A front-panel LED clearly indicates status, and robust terminal protection guards against over-voltage, polarity reversal, as well as short circuits.

• Flexible 24 VDC (±30%) supply via power rail or connectors.
• Excellent conversion accuracy in all available ranges, better than 0.05% of span.
• Fast response time < 7 ms / > 100 Hz bandwidth — 10 Hz bandwidth damping possible via DIP switch.
• Meeting the NAMUR NE21 recommendations, the PR 3118 Bipolar Isolated Converter ensures top measurement performance in harsh EMC environments.
• 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

With certifications for safe areas and hazardous locations (Zone 2/Division 2) and compliant with NAMUR NE21 for EMC immunity, the 3118 is a compact, reliable solution for splitting and isolating analog process signals in demanding industrial environments.

• Fast and easy configuration of factory-calibrated measurement ranges via DIP switches.
• The narrow 6.1 mm housing allows up to 163 units per meter.
• Units can mount 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.