METTLER TOLEDO IND560x Intrinsically Safe Weighing Terminal

Overview

The METTLER TOLEDO IND560x is an intrinsically safe weighing terminal engineered for reliable, high-integrity mass measurement in hazardous locations classified as Zone 1 (gas) and Zone 21 (combustible dust) per IEC 60079-0 and IEC 61241 standards. Built upon the proven IND560 platform, it integrates advanced signal conditioning architecture with TraxDSP™ adaptive digital filtering to deliver stable, repeatable weight readings across dynamic industrial environments—from milligram-scale checkweighing to multi-ton batching operations. Its intrinsic safety certification (e.g., ATEX, IECEx, UL/cUL Class I Div 1, Class II Div 1) ensures compliance without requiring explosion-proof enclosures, reducing installation complexity and lifecycle cost. The terminal operates as a field-level weighing controller, interfacing directly with analog load cells, IDNet® digital sensors, or TBrick-Ex™ intrinsically safe junction boxes—enabling seamless integration into process automation systems where personnel safety and regulatory traceability are non-negotiable.

Key Features

• High-speed, noise-immune A/D conversion: Internal sampling rate exceeding 366 Hz supports real-time dynamic weighing applications such as filling, dosing, and vibratory feed control while maintaining metrological integrity under electromagnetic interference (EMI).
• Intrinsically safe discrete I/O: Optional internal solid-state I/O board (4 inputs / 6 outputs) enables direct control of valves, conveyors, alarms, and status indicators within hazardous zones—eliminating the need for external safety barriers in many configurations.
• Modular communication architecture: Native support for RS-232/422/485 serial protocols and 10Base-T Ethernet provides foundational connectivity; full protocol flexibility—including EtherNet/IP, PROFIBUS DP, DeviceNet, Modbus TCP, and Allen-Bradley RIO—is unlocked when paired with the ACM500 communications station.
• SmartTrac™ graphical interface: High-contrast monochrome display with context-sensitive soft keys guides operators through calibration, tare, preset selection, and diagnostics—reducing training time and minimizing human error in regulated production environments.
• Configurable output templates: Five user-editable output formats accommodate diverse host system requirements, including continuous streaming, command-triggered events, and template-based data packets compliant with plant-wide MES or SCADA ingestion protocols.

Sample Compatibility & Compliance

The IND560x supports both analog and digital weighing platforms certified for use in hazardous areas. For analog operation, it supplies regulated 5 VDC excitation to up to four 350 Ω strain gauge load cells (minimum 87 Ω impedance, 2–3 mV/V sensitivity), achieving up to 100,000 divisions of resolution under U.S. NIST Handbook 44 Class II approval. When used with IDNet® or TBrick-Ex™ digital sensor networks, it inherits inherent intrinsic safety at the sensor level—simplifying system-level certification. Regulatory approvals include ATEX Directive 2014/34/EU (II 1G Ex ia IIC T4 Ga / II 1D Ex ia IIIC T135°C Da), IECEx (Ex ia IIC T4 Ga / Ex ia IIIC T135°C Da), UL/cUL Listed for Class I, II, III, Div 1 Groups A–G, and CSA C22.2 No. 142. It meets relevant portions of FDA 21 CFR Part 11 for electronic records when deployed with audit-trail-enabled software configurations and supports GLP/GMP-aligned calibration management workflows.

Software & Data Management

Configuration and diagnostics are performed locally via the front-panel interface or remotely using METTLER TOLEDO’s free WinCAL® or ConfigExpress™ PC utilities. These tools enable secure parameter backup/restore, firmware updates, and generation of calibration certificates compliant with ISO/IEC 17025 documentation requirements. When integrated with ACM500, the IND560x supports OPC UA server functionality (via optional firmware), enabling bidirectional data exchange with enterprise-level MES, ERP, or LIMS platforms. All configuration changes, calibration events, and weight-triggered actions can be logged with timestamp, operator ID (if network-authenticated), and digital signature—ensuring full auditability for pharmaceutical, food, and chemical manufacturing subject to 21 CFR Part 11 or Annex 11 compliance.

Applications

• Explosion-proof batching and recipe dispensing in chemical synthesis reactors
• Intrinsically safe checkweighing on pharmaceutical tablet packaging lines (Zone 21)
• Hazardous-area tank and silo inventory monitoring with remote PLC integration
• Gravimetric feeding of flammable powders in polymer compounding extruders
• Dynamic fill-level control in solvent-based coating and ink mixing stations
• Weight-based leak detection and purge verification in gas cabinet monitoring systems

FAQ

Is the IND560x certified for both gas and dust hazardous areas?
Yes. It carries dual-certification for Zone 1 (gas/vapor) and Zone 21 (combustible dust) under ATEX, IECEx, and North American Class I/II Div 1 standards.

Can the IND560x operate without the ACM500 communications module?
Yes—it functions autonomously with basic serial and Ethernet interfaces; however, advanced fieldbus protocols (PROFIBUS DP, EtherNet/IP, etc.) require ACM500 integration.

What is the maximum number of discrete I/O points supported in a hazardous area?
With the internal I/O board and ACM500 + ARM100 expansion module over RS-485, up to 12 digital inputs and 18 digital outputs may be deployed within the same certified zone.

Does the IND560x support NIST-traceable calibration reporting?
Yes. When used with WinCAL® and a certified reference standard, it generates calibration reports including uncertainty budgets, environmental conditions, and technician credentials—fully traceable to NIST or national metrology institutes.

Is SmartTrac™ compatible with multilingual operator interfaces?
The display language is configurable via firmware; English, German, French, Spanish, Chinese, and Japanese language packs are available through authorized METTLER TOLEDO service channels.