Signal Isolator
High-Precision Industrial Signal Conditioning for Noise-Free, Reliable Data Transmission
Product Overview
Our signal isolators are professional industrial signal conditioning devices designed for analog signal transmission in automation systems. Adopting advanced galvanic isolation technology, they effectively eliminate ground loop interference, common-mode noise and electromagnetic interference from on-site power equipment, ensuring accurate, distortion-free delivery of field sensor signals to PLC, DCS and upper control systems.
With universal signal compatibility, multi-channel configurations and optional transmitter power distribution functions, they are widely used in complex industrial scenarios to improve system stability, protect control module hardware and enhance overall measurement and control accuracy.
Core Features
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Triple Galvanic Isolation with High Accuracy
Adopts high-performance magnetic/optical isolation technology to achieve complete electrical isolation among input, output and power supply, effectively blocking ground loop voltage, surge and 串模干扰. Built-in precision linear compensation circuits deliver outstanding measurement accuracy and low linearity error, preserving full integrity of the original signal throughout transmission.
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Strong Anti-Interference for Harsh Field Environments
Features excellent electromagnetic compatibility (EMC) performance, effectively suppressing electromagnetic interference generated by variable frequency drives, motors and other high-power equipment. It filters out on-site clutter and noise signals, maintaining stable and reliable signal transmission even in workshops with severe electromagnetic interference.
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Flexible Signal Matching & Distribution Capability
Supports all mainstream industrial analog signals including 4-20mA, 0-5V, 0-10V and 0-20mA, and supports free conversion between current and voltage signal types. Most models provide 24V DC loop-powered output for field transmitters, integrating power supply and isolation in one unit to simplify system wiring. Multiple channel configurations such as 1-in-1-out, 1-in-2-out and 2-in-2-out are available to fit diverse system architecture requirements.
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Compact Design for Easy Installation & Maintenance
Adopts standard DIN rail mounting with an ultra-thin modular body, greatly saving internal space of control cabinets. The standardized terminal layout enables quick wiring, and the pluggable terminal design (optional) further simplifies on-site replacement without full rewiring, reducing downtime during maintenance.
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Comprehensive Protection & Maintenance-Free Operation
Built-in reverse polarity protection, over-current protection and over-voltage protection effectively prevent device damage caused by wiring errors and abnormal working conditions. With low power consumption design and no mechanical moving parts, it delivers extremely long service life and stable continuous operation, requiring almost no routine maintenance.
Technical Specifications
- Input signal: 4-20mA, 0-5V, 0-10V, 0-20mA (customizable)
- Output signal: 4-20mA, 0-5V, 0-10V, 0-20mA (customizable)
- Isolation structure: Triple isolation (input / output / power supply)
- Measurement accuracy: ≤ ±0.1% FS
- Linearity error: ≤ ±0.05% FS
- Isolation withstand voltage: ≥ 2500V AC / 1min
- Power supply: DC 24V (standard), AC 220V optional
- Operating temperature: -20℃ ~ +70℃
- Installation: Standard DIN rail mounting
- Response time: ≤ 10ms
Typical Applications
- Signal isolation and conditioning for temperature, pressure, level and other field transmitters
- Matching with PLC/DCS control systems to protect analog input modules
- Signal transmission in VPSA oxygen generation, water treatment and municipal heating automation systems
- Industrial sites with severe electromagnetic interference such as frequency conversion workshops
- Data acquisition and monitoring systems in chemical, metallurgy and power industries
- Signal isolation and distribution for grain depots, feed mills and flour milling production lines
- Eliminating ground loop interference in multi-device interconnected control systems
All signal isolators undergo strict factory calibration and full-function testing before delivery. We provide customized solutions for special signal types, channel configurations and accuracy requirements, along with reliable technical support to help you build a stable, interference-free industrial signal transmission system.
