Our JK 4-20mA loop isolators for accurate and secure signals

In today’s increasingly complex industrial environments, signal accuracy is critical to ensure the safety and performance of measurement and control systems.

JM Concept’s JK 4-20mA loop isolators are designed to meet these essential requirements by providing

• reliable galvanic isolation,
• reducing electrical noise,
• and enhancing equipment durability.

Why Use a 4-20mA Loop Isolator?

The 4-20mA current loop is a widely used standard for transmitting analog signals between industrial devices. However, ground loops, parasitic currents, and potential differences between systems can degrade signal integrity, leading to measurement errors and malfunctions. JK loop isolators protect against ground loops, which occur when devices are connected to different reference grounds. By electrically isolating circuits, JK isolators prevent unwanted currents from disrupting signal transmission.

The Benefits of JK 4-20mA Loop Isolators

• Enhanced Equipment Protection: The galvanic isolation between input and output circuits protects sensitive equipment from overvoltage and short circuits.
• Improved Measurement Accuracy: Isolation ensures that the signal remains linear and true to the original measurement, even in complex systems.
• Cross-System Compatibility: JK isolators allow safe integration of measurement and control systems from different manufacturers, free from electrical interference.
• Independent Power Supply Separation: Each device can use its own power source without affecting signal quality, thanks to the isolator’s separation capabilities.

JK Isolator Models: Self-Powered vs. Externally Powered

JK isolators are available in Self-Powered and Externally Powered versions, giving you flexibility based on your system’s requirements:

• Self-Powered Isolator (JK 2000): Powered directly by the sensor’s current loop, this is an economical and easy-to-install solution, ideal for simple or low-power systems.
• Externally Powered Isolator (JK 0030A1, JK 3000): Requires an external power source but delivers higher performance, especially over long cable runs or in applications that demand high signal fidelity.

When Should You Choose Self-Powered or Externally Powered?

• Self-Powered: Ideal for simple systems or when power constraints exist. It effectively eliminates ground loop problems without needing an additional power supply.
• Externally Powered: Perfect for complex architectures or when long-distance transmission is required. Active isolators offer amplification and signal restoration, ensuring optimal performance whether the loop is passive or active.

Applications for JK Loop Isolators

JK isolators are used across various industrial applications—especially where high measurement precision is essential. Typical environments include distributed control systems (DCS) and facilities exposed to electromagnetic interference (EMI).

JK isolators: stable and reliable signals in complex environments

JM Concept’s JK 4-20mA loop isolators are a must-have for ensuring high-quality, stable, and reliable signals in complex industrial systems. Whether you're looking for a self-powered isolator for a basic setup or a high-performance powered isolator, JM Concept offers the right solution to meet your needs.

Explore our full range of JK loop isolators on our website and boost your system's performance today.⬇️