Multifunctional DC Signal Converter

Model : PR 4184

Brand: PR Electronics

  • Conversion of DC voltage and current signals with custom configurable ranges
  • Current input range: -100…+100 mA
  • Voltage input range: -300…+300 V
  • Bipolar and Unipolar DC Current and Voltage output
  • Supports both passive and active inputs and outputs
  • Programming and process monitoring via PR 4500 display series
  • Fast response time < 20ms
  • 3kVAC galvanic isolation
  • Excellent accuracy < 0.05%
  • Universally powered by 21.6…253 VAC / 19.2…300 VDC

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Bipolar Signal Converter, Signal Isolator, Transmitter


PR Electronics

Number of Inputs


Input Type

DC Current, DC Voltage, Potentiometer, Transmitter

Number of Outputs


Output Type

DC Current, DC Voltage


PR 4500 Modules



Transmission Rate

2400 to 115200 bit/s


4500 series devices


< ±0.05% of span


SIL2, Hardware Assessment, UL

Power Supply

25…250VDC / 20…300VAC


2.3 kVAC

Operating Temperature

-20 to +60°C

Temperature Coefficient

< ±0.01% of span /°C

Protection Degree

IP 20


109×23.5×104 mm



Other product features

160 g


175 × 150 × 35 mm


  • Fast < 20 ms response time for measuring signals produced by torque, position, current & acceleration sensors.
  • User configurable bipolar or unipolar I/O means the 4184 is suitable for nearly any DC voltage or current conversion.
  • Freely programmable between ±300 VDC and ±100 mA.
  • The excitation source allows the measurement of a 2-wire or 3-wire transmitter or a potentiometer.
  • Converts narrow bipolar inputs to wide bipolar or unipolar outputs, e.g., ±1 volt input = ±10 volt or 4…20 mA output.
  • Configurable input limits control the output value for increased safety.
  • ±20 VDC buffered voltage output for controlling devices like the PVG 32 valve (6…18 VDC).
  • Designed according to strict safety requirements and is therefore suitable for application in SIL 2 installations.
  • Suitable for use in systems up to Performance Level “d” according to ISO-13849.

Technical characteristics

  • The latest analog and digital techniques are used to 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, 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.
  • Excellent signal-to-noise ratio of > 60 dB.

Mounting / installation / programming

  • Very low power consumption means units can be mounted side by side without an air gap – even at 60°C ambient temperature.
  • Configuration, monitoring, 2-point process calibration, and more are accomplished using PR’s 4500 series of detachable displays.
  • All programming can be password-protected.

Source: PR4184 Official Page

Product Documents:


PR Electronics Solutions:

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