Bipolar DC Signal Converter

Model : PR 3117

Brand: PR Electronics

  • Conversion of bipolar DC voltage and current signals to unipolar signals.
  • Current input measurement range: -23…+23 mA
  • Voltage input measurement ranges: -11.5…+11.5 V
  • DC Current and Voltage output
  • Excellent accuracy, better than 0.05% of span
  • 5kVAC galvanic isolation
  • Only 6.1mm width
  • Excellent EMC performance and 50/60 Hz noise suppression
  • Fast response time (< 7ms)
  • Configuration via DIP-switches and selectable signal ranges

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Bipolar Signal Converter, Signal Isolator


PR Electronics

Number of Inputs


Input Type

DC Current, DC Voltage

Number of Outputs


Output Type

DC Current, DC Voltage


DIP switch


< ±0.05% of span


ATEX, Zone2, CCC, DNV, EAC, FM, Zone2 – DIV2, IECEx, Zone2, UL 61010

Power Supply

20…30 VDC


2.5 kVAC

Operating Temperature

-25 to +70°C

Temperature Coefficient

< ±0.01% of span /°C

Protection Degree

IP 20


113x 6.1×115 mm



Other product features

70 g


175 × 150 × 15 mm


  • The 3117 is an isolating converter that can be used for signal conversion of standard bipolar analog process signals into a unipolar analog signal.
  • The unit offers 3-port isolation, provides surge suppression, and protects control systems from transients and noise.
  • The 3117 also eliminates ground loops and can be used for measuring floating signals.
  • Mounting of the 3117 can be in the Safe area or in Zone 2 and Cl. 1 Div 2 area and is approved for marine applications.

Technical characteristics

  • Flexible 24 VDC (±30%) supply via power rail or connectors.
  • Excellent conversion accuracy, better than 0.05% of the selected range.
  • Inputs and outputs are floating and galvanically separated.
  • A green front LED indicates the operation status of the device.
  • All terminals are protected against overvoltage and polarity error.
  • Meeting the NAMUR NE21 recommendations, the 3117 ensures top measurement performance in harsh EMC environments.
  • High galvanic isolation of 2.5 kVAC.
  • Fast input to output response time < 7 ms / > 100 Hz – 10 Hz bandwidth damping possible via DIP-switch.
  • Excellent signal/noise ratio > 60 dB.

Mounting / installation / programming

  • Fast and easy configuration of factory-calibrated measurement ranges via DIP switches.
  • A very low power consumption allows DIN rail mounting without needing any air gap.
  • Wide temperature operation range: -25…+70°C.

Source: PR3117 Official Page

Product Documents:


PR Electronics Solutions:

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