Description
Application – 3185 Loop powered isolator
- 1:1 input loop powered isolator of current signals in the range 0(4)…20 mA.
- 3185 is an easy mounting DIN rail unit.
- A very competitive choice in terms of both price and technology for galvanic isolation of current signals.
- Provides surge suppression and protects control systems from transients and noise.
- 3185 eliminates ground loops and can be used for measuring floating signals.
- The device can be mounted in Safe area or in Zone 2 and Cl. 1 Div 2. area.
Technical characteristics
- 3185 is powered by the analog input current signal loop.
- Low input voltage drop, typ 1.35 V + Vout.
- Excellent conversion accuracy, better than 0.1% in the range 0…20.5 mA.
- Functional range is 0…23 mA which means that 3185 is NAMUR NE43 compliant.
- Inputs and outputs are floating and galvanically separated.
- The output is voltage limited to 17.5 VDC.
- High galvanic isolation of 2.5 kVAC.
- Fast response time < 5 ms.
- Excellent signal/noise ratio > 60 dB.
Mounting / installation / programming
- DIN rail mounting with up to 330 channels per meter.
- Temperature operation range is from -25…+70°C.
Environmental Conditions – 3185 Loop powered isolator
| 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 | 1:1 |
| 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 ec IIC T4 Gc |
| IECEx | Ex ec 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 & UK SI 2016/1091 |
| LVD | 2014/35/EU & UK SI 2016/1101 |
| ATEX | 2014/34/EU & UK SI 2016/1107 |
| RoHS | 2011/65/EU & UK SI 2012/3032 |
| EAC | TR-CU 020/2011 |
| EAC Ex | TR-CU 012/2011 |
Approvals
| ATEX | KEMA 10ATEX0147 X |
| IECEx | KEM 10.0068X |
| UKEX | DEKRA 21UKEX0055X |
| c FM us | FM17US0004X / FM17CA0003X |
| c UL us, UL 61010-1 | E314307 |
| CCC | 2020322310003554 |
| DNV Marine | TAA00001RW |
| EAC Ex | EAEU KZ 7500361.01.01.08756 |
Reliable Signal Isolation with the PR Electronics 3185 Loop Powered Isolator
The PR Electronics 3185 Loop Powered Isolator is a high-performance signal conditioning device designed to provide accurate and reliable galvanic isolation in industrial process control applications. Featuring a compact design, high accuracy, and easy installation, the 3185 ensures optimal signal integrity while protecting against electrical noise and interference.
Key Features of the PR Electronics 3185 Loop Powered Isolator:
- Loop-Powered Operation: No external power supply required, simplifying installation and reducing wiring costs.
- High Galvanic Isolation: Provides up to 2.5 kV isolation between input and output, ensuring signal integrity.
- Compact DIN Rail Mounting: Space-saving design for easy integration into control panels.
- Low Power Consumption: Efficient signal isolation without adding excessive power load to the loop.
- Wide Input & Output Compatibility: Supports standard current signals (e.g., 4-20 mA) for seamless integration.
- Minimal Signal Distortion: Ensures accurate transmission of process signals with low insertion loss.
- Robust Industrial Design: Operates reliably in harsh environments with wide temperature tolerance.
Applications of the 3185 Loop Powered Isolator
The PR Electronics 3185 is ideal for a wide range of industrial automation and control applications, including:
- Process Automation: Maintaining signal integrity in control loops.
- Industrial Manufacturing: Isolating signals from sensors, transmitters, and PLCs.
- Oil & Gas Industry: Protecting measurement and control signals in hazardous environments.
- Energy & Power Plants: Ensuring safe and accurate signal transmission in power generation and distribution.
- Water & Wastewater Treatment: Preventing ground loops and electrical interference in monitoring systems.
Why Choose PR Electronics 3185?
PR Electronics is a global leader in high-quality signal conditioning solutions. The 3185 Loop Powered Isolator is designed for industrial applications where precise signal isolation and protection are crucial. With its reliable performance, easy installation, and robust construction, the 3185 is the perfect choice for engineers and system integrators.
Order the PR Electronics 3185 Today!
Looking for a top-quality loop-powered isolator for your industrial application? The PR Electronics 3185 offers superior signal isolation and protection. Contact us today to learn more or place an order.
