A signal splitter (also known as a signal isolator or repeater) is an electronic device used in industrial process control to multiply, isolate, and distribute a single 4‑20 mA or RTD/temperature signal across multiple output loops. It provides galvanic isolation between circuits, protecting against ground loops, surges, and ensuring signal integrity for monitoring, control, and safety systems.
Why Choose Amelec Signal Splitters?
Universal Supply & Versatility
Amelec splitters like the AEC231 offer a true universal AC/DC supply from 21 V to 265 V, compatible with all industrial environments amelec-uk.com+12amelec-uk.com+12amelec-uk.com+12.
Precision & Reliability
These devices maintain high accuracy (typically ±0.1 % FS or better), minimal linearity error, and fast response times. The ADG231‑HS, for example, achieves <25 ms response and <0.1 % full‑scale linearity amelec-uk.com.
Compact & Scalable Design
The ADG231 ultra‑slim splitter lets you install up to 60 isolated 4‑20 mA output loops along just 12 inches of DIN‑rail space—ideal for dense control cabinets sandhurstinstruments.co.uk+10amelec-uk.com+10materialsupplies.com.hk+10.
Safety‑Rated for Hazardous Environments
Many models (e.g. ADM221X, ADM237X‑4) are certified to SIL1, SIL2, or SIL3 (IEC 61508‑2), making them suitable for Safety Instrumented Systems (SIS) amelec-uk.com+7amelec-uk.com+7amelec-uk.com+7.
Flexible Outputs & Customization
Most splitters feature dual or multiple galvanically isolated outputs, configurable as current‑source or sink. The ADM237X‑4 supports up to four separately programmed process outputs kempstoncontrols.com+11amelec-uk.com+11amelec-uk.com+11.
Easy Calibration & Support
Front‑panel zero/span potentiometers allow fast on‑site calibration. Amelec also offers HART‑compatible, intrinsically safe (EX) variants, and 10‑year warranties on select models like the ADM221X amelec-uk.com+5amelec-uk.com+5amelec-uk.com+5.
Flagship Models
AEC231 – Dual‑Output 4‑20 mA Signal Splitter
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Universal 21–265 V supply
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Dual galvanically isolated outputs (can be same or different)
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Easy manual tuning via front potentiometers
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Plus HART and EX variants available
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Next‑day delivery standard amelec-uk.com+4amelec-uk.com+4sandhurstinstruments.co.uk+4
ADG231 – Ultra‑Slim 4‑20 mA Signal Splitter
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Up to 60 isolated outputs in just 12″ of DIN‑rail
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Ultra‑compact design for high‑density applications
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Supports SIL1‑3-rated safety loops
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Fast (<25 ms) and accurate (<0.1 % FS) amelec-uk.com+8amelec-uk.com+8amelec-uk.com+8amelec-uk.com
ADM221X – Dual‑Output RTD/Temperature Signal Splitter
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Suitable for 2‑ or 3‑wire RTD inputs
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Universal AC supply (95–250 VAC)
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SIL1‑3 rated, rugged polycarbonate housing
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±0.2 % accuracy, 10‑year warranty materialsupplies.com.hk+12amelec-uk.com+12Applegate Marketplace Ltd+12
ADM237X‑4 – Multi‑Output Signal Splitter / Isolator
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Up to four isolated outputs per input
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Supports current‑ or voltage‑sourcing or sink modes
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SIL1‑3 rated with fast <100 ms response and ±0.1 % accuracy
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DIN‑rail or panel mounting options amelec-uk.com+4amelec-uk.com+4amelec-uk.com+4
Key Benefits (Perfect for SEO Highlights)
| Feature | Benefit for Industrial Users |
|---|---|
| Universal AC/DC power | Install worldwide with one model |
| High channel density | Efficient DIN‑rail usage with slim models |
| Certified safety ratings | Compatible with SIL1‑3 safety loops |
| Flexible output types | Mix current source, sink, voltage outputs as needed |
| Industrial‑grade accuracy | Ensures reliable, traceable data transfer |
| Extensive support | Fast delivery, calibration tools, and long warranties |
SEO‑Optimized Summary
Amelec’s Signal Splitter collection provides world‑class 4‑20 mA and RTD signal isolation and distribution with universal supplies, high channel density and SIL-certified safety ratings. Whether you need a compact multi-way splitter, a dual-output isolator, or a RTD temperature splitter, Amelec offers robust, precise and easy-to-integrate solutions built for industrial and hazardous environments. With ultra-compact DIN-rail mounting, flexible output configurations, and industry-standard reliability, these signal splitters deliver unmatched performance in process controls.
Looking for quotations, datasheets or bespoke configurations? Feel free to ask!