PR Electronics 3186 2-Wire Transmitter Isolator / Current Isolator

Features

  • 1 or 2 channel 2-wire transmitter isolator / current isolator
  • 1:1 conversion in the range 3.5…23 mA
  • Low channel voltage drop and fast response time < 5 ms
  • Excellent accuracy, better than 0.05%
  • Slimline 6 mm housing
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PR Electronics 3186 is a versatile isolator available in two versions: the 3186A and the 3186B. The 3186A is a 1:1 output loop-powered 2-wire transmitter isolator designed to excite and measure passive input signals. The 3186B, on the other hand, is a 1:1 output loop-powered 2-wire current isolator that measures active input signals. Both versions offer galvanic isolation, surge suppression, and protection against transients and noise, making them an excellent choice for various industrial applications.

Applications

  • Signal Isolation and Conversion:
    • 3186A: Excites and measures passive input signals, providing 1:1 isolation.
    • 3186B: Measures active input signals, providing 1:1 isolation.
  • Ground Loop Elimination: Eliminates ground loops, allowing for precise and stable signal measurements.
  • Floating Signal Measurement: Suitable for measuring floating signals, enhancing system reliability.
  • Industrial Compatibility: Can be mounted in Safe areas, Zone 2, and Cl. 1 Div 2 areas, ensuring broad applicability.
  • Surge Suppression: Protects control systems from transients and noise.

Technical Characteristics

  • Power Supply:
    • 3186A: Powered by the host loop voltage with a wide supply range from 6…35 V.
    • 3186B: Low input drop ≤ 3 V even without loop power on the output terminals.
  • Low Voltage Drop:
    • 3186A: Typical input to output voltage drop of 2.5 V.
  • High Conversion Accuracy: Provides excellent conversion accuracy, better than 0.05% within the range of 3.8…20.5 mA.
  • Wide Signal Range: Signal range of 3.5…23 mA, compliant with NAMUR NE43 standards.
  • Galvanic Isolation: Features high galvanic isolation of 2.5 kVAC, with floating inputs and outputs.
  • Fast Response Time: Offers a fast response time of less than 5 ms.
  • Signal/Noise Ratio: Ensures an excellent signal-to-noise ratio greater than 60 dB.
  • High Density Mounting: Supports DIN rail mounting with up to 330 channels per meter.
  • Wide Temperature Range: Operates within a temperature range of -25 to +70°C, making it suitable for various environments.

Mounting / Installation

  • DIN Rail Mounting: Easy to mount on DIN rails, allowing for efficient use of space and high channel density.

PR Electronics 3186 2-Wire Transmitter Isolator / Current Isolator is a reliable and efficient solution for industries requiring accurate signal isolation and conversion, particularly in environments with stringent safety and performance requirements.

Specification

ENVIRONMENTAL CONDITIONS
Operating temperature -25°C to +70°C
Storage temperature -40°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) 113 x 6.1 x 115 mm
Weight approx. 70 g
DIN rail type DIN EN 60715/35 mm
Wire size 0.13…2.5 mm2 / AWG 26…12 stranded wire
Screw terminal torque 0.5 Nm
Vibration IEC 60068-2-6
2…25 Hz ±1.6 mm
25…100 Hz ±4 g
COMMON SPECIFICATIONS
Supply
Supply voltage 6…35 VDC
Power dissipation, per channel 50 mW (3186A) Vterminal x I (3186B)
Isolation voltage
Isolation voltage, test / working 2.5 kVAC / 300 VAC (reinforced)
Zone 2 / Div. 2 250 VAC
Response time
Response time (0…90%, 100…10%) < 5 ms
Signal / noise ratio > 60 dB
Signal dynamics, input Analog signal chain
Signal dynamics, output Analog signal chain
Accuracy Better than 0.05%
Cut-off frequency (3 dB) 100 Hz
EMC immunity influence < ±0.5% of span
Extended EMC immunity: NAMUR NE21, A criterion, burst < ±1% of span
INPUT SPECIFICATIONS
Current input
Measurement range 3.5…23 mA
Input to output voltage drop, typ. 2.5 V (3186A)
Input voltage drop typ.: Supplied and non-supplied unit ≤ 3 V (3186B)
2-wire transmitter supply 3.5…32.5 V
Signal conversion 1:01
OUTPUT SPECIFICATIONS
Current output
Signal range 3.5…23 mA
Signal range, input to output 3.8…20.5 mA
Output loop current limitation, typ. 24 mA
Current output overload, max. 50 mA
I.S. / EX MARKING
ATEX II 3 G Ex nA IIC T4 Gc
IECEx Ex nA IIC T4 Gc
FM, US Cl. I, Div. 2, Gp. A, B, C, D T4 or Cl. I, Zone 2, AEx nA IIC T4
FM, CA Cl. I, Div. 2, Gp. A, B, C, D T4 or Cl. I, Zone 2, Ex nA IIC T4
EAC Ex 2Ex nA IIC T4 Gc X
OBSERVED AUTHORITY REQUIREMENTS
EMC
LVD 2014/35/EU
RoHS 2011/65/EU
EAC TR-CU 020/2011
EAC Ex TR-CU 012/2011
APPROVALS
ATEX KEMA 10ATEX0147 X
IECEx KEM 10.0068X
c FM us FM17US0004X / FM17CA0003X
UL UL 61010-1
DNV-GL Marine TAA00001RW
EAC Ex RU C-DK.HA65.B.00355/19

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