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Industrial DIN Rail 4-20 mA Signal Isolator 1-In 1-Out
The DIN Rail 4-20mA Signal Isolator delivers dependable 1-in/1-out current loop decoupling, high-voltage galvanic protection, and high linearity engineered to resolve industrial ground loops and electrical interference across PLC inputs.
Description
The DIN Rail 4-20mA Signal Isolator delivers dependable industrial performance, precision process control, and high metrological reliability engineered specifically for industrial automation, electrical marshaling panels, process control skids, and continuous plant monitoring.
Industrial Precision with the DIN Rail 4-20mA Signal Isolator
Engineered for mission-critical installations, the DIN Rail 4-20mA Signal Isolator provides high operating reliability, compliance with international engineering standards, and robust signal integrity across challenging factory environments. Designed to eliminate operational downtime and minimize maintenance overhead, the instrument integrates seamlessly into modern supervisory systems and distributed plant architectures.
The system incorporates industrial-grade metallurgy, comprehensive electronic safeguards, and vibration-resistant mechanical connections to ensure uninterrupted performance across diverse operating conditions. Field commissioning and diagnostics are streamlined through intuitive physical interfaces, standardized mounting architectures, and universal telemetry connectivity.
Technical Specifications
| Technical Parameter | Specification Details |
|---|---|
| Input Signal Channel | 1 × 4–20 mA DC current loop (active or passive loop powered) |
| Output Signal Channel | 1 × 4–20 mA DC linear isolated output (load capability ≤ 500 Ω) |
| Galvanic Isolation | 1.5 kV AC dielectric isolation (Input to Output to Power supply) |
| Measurement Precision | ±0.1% of Full Scale transmission accuracy |
| Response Time | Fast response: ≤ 10 ms (step response 10% to 90%) |
| Power Supply Options | 24 V DC ±10% auxiliary power or loop-powered from input signal |
| Housing Architecture | Compact flame-retardant DIN rail enclosure (width: 12.5 mm to 17.5 mm) |
| Operating Temperature | -20 °C to +60 °C; relative humidity ≤ 85% non-condensing |
Industrial Applications and Process Integration
The DIN Rail 4-20mA Signal Isolator is widely deployed across primary utility networks, heavy industrial complexes, and civil infrastructure, including:
- Wastewater treatment plants isolating electromagnetic flowmeters from distant PLC panels.
- Variable frequency drive (VFD) speed feedback loops affected by electrical switching noise.
- Multi-panel industrial facilities bridging distinct plant ground potentials.
- Retrofit automation cabinets requiring rapid plug-and-play signal noise filtering.
Frequently Asked Questions
When is a dedicated 4-20 mA signal isolator required?
An isolator is necessary whenever field transmitters and PLC analog input cards share different ground potentials, causing erratic readings, signal clipping, or damage from ground loops.
Does the isolator introduce significant signal delay?
No, with a rapid response time under 10 milliseconds, the isolator operates seamlessly in fast-acting PID process control loops.
Can this module drive long field wiring runs?
Yes, the isolated output provides a robust current source capable of driving standard instrumentation loads up to 500 ohms over extensive cable lengths.
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