Best 4-20mA Loop Splitter Solutions for Industrial Control
4-20 mA loop splitters are essential in modern industrial systems to safely duplicate a single current loop into multiple independent paths. These devices preserve signal integrity, provide galvanic isolation, and protect critical control equipment from interference and ground loops. The following selections represent a range of options suitable for DIN rail installations, including dual outputs, quad outputs, and robust isolation features. This guide highlights five high-demand models, summarizing their key capabilities to help engineers and technicians pick the best fit for their control loops and PLC systems.
| Product | Brand | Key Benefit |
|---|---|---|
| 4-20mA Signal Splitter | 1 Input, 2 Isolated Outputs | Automation Systems Interconnect | Dual isolated outputs with zero/span calibration |
| ANGGREK Splitter, 4-20mA, 1 In, 2 Out | ANGGREK | High-precision isolation with compact form factor |
| 4-20 Ma Signal Splitter, 24V DC, 2 In 4 Out | Kuuleyn | Multi-output configuration for PLC compatibility |
| ASI ASI451141 4-20mA Analog Signal Splitter, 1 In, 4 Out | Automation Systems Interconnect | Quad outputs with 3-way isolation |
| Lelukee Analog Signal Isolator Transmitter Splitter, 1 In, 2 Out | Lelukee | DIN rail mount with galvanic separation |
4-20mA Signal Splitter | 1 Input, 2 Isolated Outputs
The device provides a single 4-20 mA input with dual isolated outputs, enabling independent signal paths for multiple controllers or instrumentation. It offers zero and span adjustment for precise calibration, ensuring the transmitted signal matches process requirements. Three-way isolation helps prevent interference from surrounding circuits, improving stability in noisy industrial environments. DIN rail mounting supports quick installation in control panels. This splitter is suitable for bridging signals from a sensor or transmitter to two separate monitoring or control devices while maintaining electrical isolation.
ANGGREK Splitter, 4-20Ma, 24V Isolator Transmitter
ANGGREK’s splitter converts a 4-20 mA input into two isolated outputs and operates on a 24V DC supply. It emphasizes precise signal handling and isolation to minimize crosstalk and interference between channels. The design emphasizes high-precision components and multi-channel input/output capabilities, with a compact form factor ideal for panel installations. It is suited for PLC detection, control conditioning, and ensuring consistent data across multiple measurement points while keeping each output isolated for safety and accuracy.
4-20 Ma Signal Splitter, 24V DC, 2 In 4 Out
This 4-20 mA signal splitter features two inputs and four outputs, designed to distribute a single current loop across multiple measurement or control points. The unit emphasizes environmental resilience with flame-retardant materials and protective enclosures. It utilizes a microcontroller-based approach for lower power consumption and fast response, and includes anti-interference features to maintain signal integrity in challenging industrial environments. It is suitable for PLC detector networks and systems requiring synchronized, reliable current signaling across several devices.
ASI ASI451141 4-20mA Analog Signal Splitter
ASI’s four-output splitter accepts a single 4-20 mA input and provides four isolated outputs. This model emphasizes three-way isolation among power supply, input, and each output channel to minimize interference and signal degradation. The unit is designed for easy DIN rail mounting, enabling rapid installation in control cabinets. It supports precise calibration through zero and span adjustments, ensuring that each output remains tightly aligned with the source signal for accurate measurement and process control across multiple devices.
Lelukee Analog Signal Isolator Transmitter Splitter
Lelukee’s module functions as a signal isolator and splitter with one input and two outputs, designed for robust DIN rail mounting. It emphasizes galvanic separation within the signal path, protecting downstream devices from ground loops and related disturbances. The product supports DC 24V operation and is positioned for use in larger systems with several measurement points, where signal integrity and electrical isolation are a priority for reliable PLC or process control performance.
ASI ASI451145 4-20mA Analog Signal Splitter
ASI’s 4-20 mA splitter features three-way isolation and dual outputs with a single input. The product is designed to minimize interference and signal faults across multiple outputs, with adjustable zero and span for precise calibration. Its three-way isolation helps ensure that power supply disturbances do not propagate to the input or other outputs, making it suitable for industrial environments with multiple control loops sharing a single source sensor.
Buying Guide: Key Purchase Considerations
When selecting a 4-20 mA loop splitter, consider the following perspectives to ensure a design that matches your system requirements:
- Number of outputs: Choose a model that matches how many independent monitoring points or controllers you need to feed. Options range from 2 to 4 outputs, with some models offering 2 in and 4 out configurations.
- Isolation level: Isolation protects controllers from noise, ground loops, and interference. Multi-way isolation (three-way or more) reduces risk of cross-talk between channels and power supply disturbances.
- Input/output configuration: Assess whether you need a single input with multiple outputs or multiple inputs feeding a common set of outputs. Ensure compatibility with your PLC or DCS inputs.
- Calibration features: Zero and span adjustments enable precise calibration to align outputs with the source signal. Look for devices offering straightforward trim pots or software-adjustable calibration.
- Power supply requirements: Most devices operate on 24V DC. Confirm voltage compatibility with your control panel’s power distribution and fuse requirements.
- Mounting and enclosure: DIN rail mounting is common for ease of integration into control cabinets. Consider enclosure rating if the environment is harsh (dust, humidity, temperature).
- Safety and compliance: Check for materials suitable for industrial environments and any relevant certifications (e.g., UL, CE) that apply to your facility.
- Signal integrity: Features like galvanic isolation, fast response, and rejection of high-frequency interference support reliable data transmission to PLCs and sensors.
- Installation complexity: Some models offer plug-and-play configuration with minimal need for programming, while others may require calibration and edge-case adjustments for optimal performance.