PR 4184 Universal Unipolar / Bipolar Signal Transmitter

The PR 4184 Universal Unipolar / Bipolar Signal Transmitter is an industrial signal conditioning solution that offers precise DC voltage and current measurement and conversion across automation, process control, and instrumentation systems. This multifunctional transmitter handles DC inputs up to ±300 V and ±100 mA, with programmable spans as small as 25 mV or 0.5 mA. Thus, the 4184, from PR electronics, is ideal for torque, position, acceleration, current sensors, and potentiometer signal applications.

• Fast < 20 ms response time for measuring signals from torque, position, current, & acceleration sensors.
• User configurable bipolar or unipolar I/O means the PR 4184 is suitable for nearly any DC voltage or current conversion. 
• Freely programmable between ±300 VDC and ±100 mA.
• The excitation source allows measurement of a 2-wire or 3-wire transmitter, or a potentiometer.
• Converts narrow bipolar inputs to wide bipolar or unipolar outputs, for example, ±1 volt input = ±10 volt or 4-20 mA output.
• Configurable input limits control the output value for safety improvements. 
• ±20 VDC buffered voltage output for controlling devices like the PVG 32 valve (6-18 VDC).
• The 4184 provides the necessary failure data (SFF and PFDAVG) for SIL 2 applications as per IEC 61508 / IEC 61511.
• Failure rates for the PR 4184 Universal Unipolar / Bipolar Signal Transmitter correspond to Performance Level "d" according to ISO-13849.

PR 4184 Universal Unipolar / Bipolar Signal Transmitter from PR electronics

Featuring programmable unipolar and bipolar I/O, the PR 4184 Universal Unipolar / Bipolar Signal Transmitter converts narrow input ranges into wide standard outputs such as 4-20 mA, ±10 V, or custom ranges to meet system requirements. With a fast response time of < 20 ms and excellent accuracy better than 0.05%, this transmitter ensures reliable signal integrity for PLCs, DCS, recorders, and control loops.

Built for industrial environments, the PR 4184 has universal AC/DC power compatibility (21.6-253 VAC / 19.2-300 VDC) and robust 3-port galvanic isolation (2.3 kVAC) to protect against electrical noise. It supports NAMUR NE21 and NE43 recommendations for EMC performance and sensor error detection, and meets SIL 2/PL "d" safety requirements.

• The latest analog and digital techniques obtain maximum accuracy and immunity to interference.
• Possibility of output safety readback by selecting S4-20 mA output.
• The current output can drive up to 1000 Ohms, with an adjustable response time of 0.0-60.0 seconds.
• Exceptional mA output load stability of < 0.001% of span / 100 Ohm.
• Meets the NAMUR NE21 recommendations, thus ensuring high accuracy in harsh EMC environments. 
• Meets the NAMUR NE43 recommendations, allowing the control system to easily detect a sensor error.
• Tested to a high 2.3 kVAC, 3-port galvanic isolation level.

Easy Mounting, Installation, and Programming

Configuration and diagnostics are simple with the detachable PR 4500 series display, thus enabling easy calibration and monitoring without additional tools. Whether scaling sensor outputs or isolating critical signals, the PR 4184 delivers precision, safety, and versatility in demanding automation environments.

• Very low power consumption means units can mount side by side without an air gap – even at 140˚F (60˚C) ambient temperature.
• Configuration, monitoring, 2-point process calibration, and more via PR's 4500 series of detachable displays.