Universal uni-/bipolar signal transmitter




  • Measures DC inputs up to ±300 V / ±100 mA with spans as low as 25 mV / 0.5 mA
  • Passive/active current output and buffered voltage output
  • Fast < 20 ms response time and excellent 0.05% accuracy
  • Universally powered by 21.6…253 VAC / 19.2...300 VDC
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  • 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 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 the 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.

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.

Data sheet & Manuals

Data sheet


Manuals in Russian

Supplementary documentation

EU Declaration of Conformity

UKCA Declaration of Conformity

SIL declaration

Modbus configuration manual

FMEDA report

ISO 13849 declaration

EMC data

PR default configurations

Safety note

Safety note

Approvals & Certificates

UL certificate

EAC declaration

Environmental Conditions

Operating temperature -20°C to +60°C
Storage temperature -20°C to +85°C
Calibration temperature 20...28°C
Relative humidity < 95% RH (non-cond.)
Protection degree IP20

Mechanical specifications

Dimensions (HxWxD) 109 x 23.5 x 104 mm
Dimensions (HxWxD) w/ PR 4500 109 x 23.5 x 131 mm
Weight approx. 155 g
Weight incl. 4501 / 451x (approx.) 170 g / 185 g
DIN rail type DIN EN 60715/35 mm
Wire size 0.13...2.08 mm2 AWG 26...14 stranded wire
Screw terminal torque 0.5 Nm

Common specifications


Supply voltage, universal 21.6...253 VAC, 50...60 Hz or 19.2...300 VDC
Max. required power ≤ 2.5 W
Internal power dissipation ≤ 2.0 W

Isolation voltage

Test voltage 2.3 kVAC
Working voltage 250 VAC (reinforced) / 500 VAC (basic)

Response time

Response time (0...90%, 100...10%) < 20 ms

Auxiliary supplies

2-wire loop supply > 16 V @ 23 mA
3-wire loop supply > 18...< 28 V @ 23...0 mA
Loop supply limitation 27...35 mA avg., < 80 mA peak
Reference voltage 2.5 VDC ±0.5%
Reference voltage, load 0...15 mA
Current limit, reference voltage < 60 mA
Programming PR 4500 communication interfaces
Signal dynamics, input 24 bit
Signal dynamics, output 18 bit
Signal / noise ratio > 60 dB
Bandwidth > 40 Hz
Accuracy Better than 0.05% of selected range
EMC immunity influence < ±0.5% of span
Extended EMC immunity: NAMUR NE21, A criterion, burst < ±1% of span
Conducted emission, cl. A 150 kHz...10 MHz

Input specifications

Current input

Signal range ±100 mA
Programmable measurement ranges 0...1, 0...5, 1...5, 0...20, 4...20, ±1, ±5, ±10, ±20, ±50, ±100 mA
Custom configurable signal range ±100 mA
Min. measurement range (span) 0.5 mA
Input voltage drop 0.6 V @ 20 mA nom.

Voltage input

Signal range ±300 VDC
Programmable measurement ranges 0...0.1, 0...1, 0.2...1, 0...2.5, 0...5, 1...5, 0...10, 2...10, 0...100, 0...300, ±0.1, ±1, ±2.5, ±5, ±10, ±100, ±300 V
Custom configurable signal range ±300 V
Min. measurement range (span) 25 mV
Input resistance Nom. 3 MΩ (> 2.5 VDC) Nom. > 10 MΩ (≤ 2.5 VDC)

Potentiometer input

3-wire potentiometer input 0...100%
Reference voltage 2.5 V
Calibration resistance 5 kΩ
Min. potentiometer resistance 200 Ω

Output specifications

Current output

Signal range 0...23 mA (unipolar) -23...+23 mA (bipolar)
Custom config. output range ±20 mA
Min. signal range 4 mA
Load (@ current output) ≤ 1000 Ω / ± 20 V @ ±20 mA
Current limit ≤ 28 mA (unipolar) ± 28 mA (bipolar)
Load stability ≤ 0.001% of span / 100 Ω
Response time, programmable 0.0...60.0 s

Passive 2-wire mA output

Programmable ranges 0...20 and 4...20 mA
Ext. 2-wire loop supply range 3.5...28.8 VDC

Voltage output

Programmable signal ranges 0/0.2...1; 0/1...5 ; 0/2...10 V ±1, ±5 and ±10 V
Direct or Inverted action
Load (@ voltage output) ≥ 500 kΩ
Response time, programmable 0.0...60.0 s

Shunted voltage output

Signal range ± 1.2 V / ± 12 V
Programmable standard ranges 0...1, 0...2.5, 0...5, 1...5, 0...10, 2...10 V ±1, ±2.5, ±5, ±10 V
Min. span 0.8 V
Custom config. output range ±10 V
Load, min. > 500 kΩ

Buffered voltage output

Signal range ± 23 V
Programmable standard ranges 0...1, 0.2...1, 0...2.5, 0...5, 1...5, 0...10, 2...10, 0...20, 4...20; ±1, ±2.5, ±5, ±10, ±20 V
Min. span 0.8 V
Custom config. output range ±20 V
Current limit < 50 mA
Load, min. > 2 kΩ

Observed authority requirements

EMC 2014/30/EU & UK SI 2016/1091
LVD 2014/35/EU & UK SI 2016/1101
RoHS 2011/65/EU & UK SI 2012/3032
EAC TR-CU 020/2011


c UL us, UL 508 E248256
SIL Hardware assessed for use in SIL applications


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