MTL4641 HART Isolator - 4-20mA MTL Instruments

MTL4641 Series 4-20mA Isolator with HART Communication

The MTL4641 series from MTL Instruments provides robust signal isolation for industrial control systems. These isolators ensure safe and accurate signal transmission from field devices to your control room. They maintain bi-directional HART digital communication across the isolation barrier. This feature allows for advanced device configuration and monitoring. You can use them with confidence in potentially explosive atmospheres.

Key Technical Specifications

• The device handles a standard 4-20mA input signal with a useful over-range capability.
• It achieves a high measurement accuracy of better than ±20μA across the primary range.
• The load resistance supports up to 375Ω at 24mA for versatile loop configurations.
• A very fast response time of just 50μs ensures minimal signal delay.
• The unit operates on a low power consumption of only 0.8 watts for energy efficiency.

Safety & Environmental Protection

• The design is Intrinsically Safe for use in hazardous locations.
• It carries full ATEX and IECEx certification for global compliance.
• A fully floating DC power supply enhances system safety and noise immunity.
• The isolator exhibits excellent resistance to EMI/RFI interference for stable operation.

HART Communication & Performance

• It features bi-directional HART protocol communication for smart device integration.
• The isolator fully supports 2-wire HART transmitters without any signal loss.
• It maintains a very low ripple specification of 50μA peak-to-peak.
• This low ripple ensures the digital signal remains clean and reliable.

Model Variants Overview

• The standard MTL4641 model acts as a current source with 20V compliance.
• The MTL4641S variant functions as a current sink with 16.5V compliance.
• Choosing the correct model depends on your specific system wiring requirements.

Installation & Packaging

• The product package includes one MTL4641 series isolator module.
• You will also receive all necessary mounting hardware for a quick installation.
• Comprehensive installation documentation guides you through the setup process.
• The module design allows for straightforward DIN rail mounting in your cabinet.

Common Applications

• These isolators are ideal for process control loops and safety systems.
• They are perfect for tank level monitoring and flow measurement applications.
• Use them with any 4-20mA instrumentation in classified hazardous areas.
• They protect control system I/O cards from ground loops and voltage transients.

Shipping & Support Information

• We keep the MTL4641 series in stock for immediate shipment.
• We ship worldwide using reliable carriers like DHL, UPS, and FedEx.
• Our technical support team is available to assist you at any time.

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