A signal isolator is a key component in industrial signal conditioning. It galvanically separates the input, output, and power circuits while accurately passing analogue signals like 4–20 mA or voltage. By eliminating ground loops and protecting against electrical noise and surges, isolators ensure clean, stable data transmission in measurement and control systems Amelec Instruments+9Approved Business+9Amelec Instruments+9.
Why Amelec Signal Isolators Are Industry-Favorite
Universal Power & Global Compatibility
Products such as the AEC230/AEC231 series offer a universal AC/DC supply from 21 V to 265 V, simplifying integration in global installations. The AEC231 is particularly robust in maintaining signal strength without distortion and supports HART and intrinsically safe variants for hazardous areas Amelec Instruments.
High Channel Density with Compact Design
The ADG230 ultra‑compact isolator and its larger sibling ADG231 allow up to 60 isolated 4–20 mA loops in just 12″ of DIN‑rail space—ideal for high-density control panels. Both support SIL1, SIL2, and SIL3 safety-rated systems Amelec Instruments+5Amelec Instruments+5materialsupplies.com.hk+5.
Wide Input/Output and SIL Certification
Models like the ADM230X-4 enable four channels of fully isolated input/output conversion with support for SIL‑certified safety loops. A wide range of sensor types (RTD, voltage, current, mV) are supported, enhancing flexibility in plant automation electronicsarena.co.uk.
Precision, Isolation & Seamless Integration
Amelec isolators offer 1 kV RMS galvanic isolation, low linearity error (<±0.1 %), fast response, and immunity to EMC/RFI—ensuring signal fidelity in electrically noisy environments. Models come with DIN‑rail mountings and front-panel zero/span adjustments for easy commissioning Kempston Controls+9Amelec Instruments+9Amelec Instruments+9.
Key Models & Features
AEC231 – Dual Output Signal Isolator (4‑20 mA)
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Universal AC/DC power supply (21–265 V)
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Two galvanically isolated current outputs, configurable independently
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Front zero/span potentiometers for easy calibration
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Variants available in HART and intrinsically safe designs
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Ideal for maintaining signal integrity in critical control loops 2Amelec Instruments+2Approved Business+2
AEC230 – Process Signal Isolator (4‑20 mA Input/Output)
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Universal supply, DIN‑rail mounted
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Designed to protect and regenerate process 4‑20 mA signals
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Simple, robust, and field-configurable for a range of industrial environments Approved Business+6Kempston Controls+6Amelec Instruments+6
ADG230 / ADG231 – Ultra Compact 4‑20 mA Isolators
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Extremely slim DIN‑rail footprint
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Supports up to 60 isolated loops per 12″ rail (for ADG231)
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Suitable for SIL-rated control systems and high-density signal conditioning sandhurstinstruments.co.uk+2Amelec Instruments+2materialsupplies.com.hk+2
ADM230X‑4 – Four-Channel Signal Isolator/Converter
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Four fully isolated channels configurable for input/output
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Supports SIL1/SIL2/SIL3 applications
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Perfect for complex automation systems needing multiple isolated signals Kempston Controls+8electronicsarena.co.uk+8Amelec Instruments+8sandhurstinstruments.co.uk+5Approved Business+5Amelec Instruments+5
Key Points
| Feature | Industrial Benefit |
|---|---|
| Galvanic isolation (1 kV+ RMS) | Removes ground loops, protects equipment, and guards signals |
| Universal AC/DC supply | Single model works across global voltage standards |
| Compact DIN‑rail footprint | Fits densely populated control cabinets |
| Flexible inputs/outputs | Ideal for RTD, mV, voltage, current, and multi-channel use |
| SIL-certified models | Safe integration into process safety systems |
| Front‑accessible calibration | Simplifies field setup and adjustment |
Summary
Amelec’s Signal Isolators offer unmatched reliability for industrial signal condition, delivering galvanic isolation, universal power compatibility, and compact design. Whether you’re equipping a high-density automation panel with multiple isolated loops (ADG230/ADG231), regenerating critical 4–20 mA signals (AEC230/AEC231), or configuring multi-channel SIL-rated isolation (ADM230X‑4), these units protect your system from interference and ensure data integrity.
Look into models like AEC231, ADG231, and ADM230X‑4 for applications requiring high-grade signal protection and precision. Let me know if you’d like keyword-targeted landing page copy for phrases like “4‑20 mA signal isolator UK”, “SIL signal isolator DIN‑rail”, or “galvanic isolation process signals”.