Universal AC / DC transmitter




  • Measures AC current and voltage signals
  • Outputs passive or active current signals
  • Programming, process monitoring and diagnostics via PR 4500
  • Response time < 0.75 s and excellent accuracy better than 0.3%
  • Universally powered by 21.6…253 VAC / 19.2...300 VDC
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  1. Overview + -

  2. Technical details + -

  3. Accessories + -

  4. Order and delivery + -

  5. Why choose PR + -


  • The 0...5 AAC RMS range makes it possible to accurately measure a typical current transformer.
  • The 0...300 VAC RMS range allows accurate supply voltage monitoring.
  • The 4179 measures standard input ranges, and can be freely configured to customer-defined input range.
  • Converts narrow AC current / voltage inputs to wide bipolar or unipolar outputs, e.g. 0...1 VAC RMS input = ±10 volt or 4...20 mA output with a minimum span of 0.5 AAC RMS or 0.5 VAC RMS.
  • Configurable input limits control the output value for increased safety.
  • The 4179 has been 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 characteristic

  • The latest analog and digital techniques are used to obtain maximum accuracy and immunity to interference.
  • Possibility of output safety feedback by selecting S4...20 mA output.
  • The current output can drive up to 800 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 an input 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.

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

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
Installation in Pollution degree 2 & meas. / overvoltage cat. II

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
Vibration IEC 60068-2-6
2...13.2 Hz ±1 mm
13.2...100 Hz ±0.7 g

Common specifications


Supply voltage, universal 21.6...253 VAC, 50...60 Hz or 19.2...300 VDC
Max. required power ≤ 1.8 W nom.
Internal power dissipation ≤ 2.5 W

Isolation voltage

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

Response time

Response time (0...90%, 100...10%) < 0.75 s
Programming PR 4500 communication interfaces
Signal dynamics, input 20 bit
Signal dynamics, output 18 bit
Signal / noise ratio > 60 dB
Output referred common mode rejection ratio 0.02 ppm / VHz
Accuracy Better than 0.3% of selected range*
EMC immunity influence < ±0.5% of span*
Extended EMC immunity: NAMUR NE21, A criterion, burst < ±1% of span*
of span = of selected standard range

Input specifications

Current input

Signal range 0...5 AAC / 40...400 Hz
Maximum input limit 6.00 AAC @ 40°C
Programmable measurement ranges 0...0.5; 0…1; 0…2.5 & 0...5 AAC
Custom configurable signal range 0...5 AAC /40...400 Hz
Min. measurement range (span) 0.5 AAC
Input resistance Nom. < 0.07 Ω

Voltage input

Signal range 0...300 VAC / 40...400 Hz
Programmable measurement ranges 0...0.5, 0...1, 0...2.83, 0…5, 0…120, 0…230 & 0…300 VAC
Custom configurable signal range 0...300 VAC / 40...400 Hz
Min. measurement range (span) 0.5 VAC
Input resistance Nom. 3 MΩ || 100 pF

Output specifications

Active unipolar and bipolar mA output

Programmable ranges 0...20, 4...20 and S4...20 mA ±10 and ±20 mA
Direct or Inverted Action
Load (@ current output) ≤ 800 Ω
V-curve function, active signals, 100-0-100% 20-0-20 mA

Passive 2-wire mA output

Programmable ranges 0...20 and 4...20 mA Direct or Inverted action
V-curve function, 100-0-100% 20-0-20 mA
External loop supply 3.5...30 V

Current output

Signal range 0...23 mA (unipolar) -23...+23 mA (bipolar)
Current limit ≤ 28 mA (unipolar) ± 28 mA (bipolar)
Load stability ≤ 0.001% of span / 100 Ω
Response time, programmable 0.0...60.0 s

Voltage output

Programmable signal ranges 0/0.2...1; 0/1...5 ; 0/2...10; 1...0.2/0; 5...1/0; 10...2/0 V ±1, ±5 and ±10 V
Direct or Inverted action
V-curve function, 100-0-100% 1-0-1, 5-0-5 and 10-0-10 V
Load (@ voltage output) ≥ 500 kΩ
Response time, programmable 0.0...60.0 s

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


* / ** For custom configurable signal ranges, general accuracy and EMC specifications are 0.3% of full scale


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