MTL 4641 ISO Class 1 Sensor for Wafer Processing Tools Semiconductor Fab

Product Specification

1. High-Precision Signal Conditioning for Industrial Process Control

The MTL4641 is a single-channel smart transmitter repeater power supply engineered for critical industrial applications, designed to energize 2- or 3-wire 4-20mA transmitters while replicating the signal in a galvanically isolated floating circuit. With a compact DIN-rail mountable design (20cm x 20cm x 3cm) and low power consumption (<1W), it optimizes panel space in process control systems. The module features full galvanic isolation between input, output, and power channels, providing robust protection against ground loops, voltage transients, and electromagnetic interference (EMI). Its NAMUR-compliant input ensures seamless integration with inductive sensors and pressure transmitters, while the floating output supports direct connection to PLC/DCS analog input modules without signal degradation. Unlike competitor solutions like Pepperl+Fuchs’ KFD2-SCD2-EX1, the MTL4641 eliminates the need for external power supplies by deriving energy directly from the 24V DC loop, simplifying wiring and reducing installation costs.

2. Hazardous Area Compliance with Advanced Fault Detection

Certified to ATEX/IECEx standards for Zone 2/22 environments (pending official documentation), the MTL4641 delivers reliable performance in potentially explosive atmospheres. Its line fault detection (LFD) mechanism identifies open circuits (<50µA) or short circuits (<100Ω) in field wiring, triggering LED indicators and deactivating the output to prevent unsafe conditions. The module’s **adjustable hysteresis of 200µA** minimizes false triggers by activating outputs at >2.1mA and deactivating below 1.2mA, critical for applications like chemical processing or oil refining where precision is non-negotiable. Compared to Siemens’ 7ML1201-1EB00 isolators, the MTL4641 integrates phase reversal control via side-mounted switches, allowing rapid adaptation to sensor polarity changes without reconfiguration. Additionally, its wide input voltage range (18-35V DC) ensures compatibility with legacy and modern field devices, reducing inventory complexity.

3. Versatile Integration for Smart Industrial Networks

The MTL4641 supports HART protocol communication (compatible with AMS Device Manager), enabling bidirectional data exchange with smart transmitters for diagnostics, calibration, and predictive maintenance. Its dual redundant outputs provide seamless failover in redundant control systems, while the changeover relay contacts accommodate both normally open and closed circuit configurations. The module’s extended operating temperature range (-20°C to +60°C) and vibration resistance (IEC 60068-2-6) ensure reliable performance in extreme industrial environments. Unlike traditional isolators requiring separate termination blocks, the MTL4641 features plug-and-play terminals for quick field wiring, streamlining commissioning. This combination of advanced signal conditioning, rugged construction, and smart communication capabilities positions the MTL4641 as a cost-effective solution for industries ranging from pharmaceuticals to offshore energy production, where safety, scalability, and real-time data integration are essential.

Packaging & Shipping

Company Information

Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.
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With many years of experience in the industrial sector, we consistently deliver the highest quality of spare parts.which make sure that all this jobs are perfectly.

we are major in PLC,Sensors,HIM,Transmitters.

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