PR Electronics 3185 Loop Powered Isolator

Features

  • 1 or 2 channel input loop powered isolator
  • Signal 1:1 functional range 0…23 mA
  • Low input voltage drop and fast response time
  • Excellent accuracy and high load stability
  • Slimline 6 mm housing
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PR Electronics 3185 Loop Powered Isolator is designed for the 1:1 isolation of current signals in the range of 0(4)…20 mA. This DIN rail mountable unit offers an economical and technologically advanced solution for galvanic isolation of current signals. It provides surge suppression and protects control systems from transients and noise while eliminating ground loops and enabling the measurement of floating signals.

Applications

  • Current Signal Isolation: Provides 1:1 isolation of current signals in the range of 0(4)…20 mA, ensuring accurate and interference-free signal transmission.
  • 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

  • Loop Powered: Powered by the analog input current signal loop, eliminating the need for an external power source.
  • Low Input Voltage Drop: Typical voltage drop is 1.35 V + Vout, ensuring minimal impact on the signal.
  • High Conversion Accuracy: Provides excellent conversion accuracy, better than 0.1% within the range of 0…20.5 mA.
  • Wide Functional Range: Functional range of 0…23 mA, making it compliant with NAMUR NE43 standards.
  • Galvanic Isolation: Features high galvanic isolation of 2.5 kVAC, with floating inputs and outputs.
  • Voltage Limited Output: The output is voltage limited to 17.5 VDC for added safety.
  • 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 / Programming

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

PR Electronics 3185 Loop Powered Isolator is a reliable and efficient solution for industries requiring accurate signal isolation, 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
Power dissipation, per channel 30 mW
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 0.1%
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 0…23 mA
Input voltage drop (Unit voltage drop) + Vout.
Signal conversion 1:01
Start-up current, typ. 10 uA
Current input overload, max. 50 mA
Input to output voltage drop, typ. 1.35 V + (0.015 x Vout.)
OUTPUT SPECIFICATIONS
Current output
Signal range 0…23 mA
Load (@ current output) ≤ 600 Ω
Load stability < 0.01% of span / 100 Ω
Voltage limit 17.5 V
of span = 0…20 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 2014/30/EU
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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