Thermo Fisher APEX 100/300/500 Metal Detector

Overview

The Thermo Fisher APEX 100/300/500 series represents a family of industrial metal detectors engineered for reliable, high-sensitivity detection of ferrous, non-ferrous, and stainless steel contaminants in bulk solids, powders, granules, and packaged products across food, pharmaceutical, chemical, and plastics processing lines. Based on dual-frequency electromagnetic induction technology, the APEX platform operates by generating two simultaneous, precisely controlled magnetic fields within the detection aperture. This architecture mitigates phase-shift interference caused by product effect—particularly critical when inspecting conductive or moist materials such as wet pet food, dairy powders, or salt-laden seasonings—thereby delivering enhanced signal-to-noise ratio and consistent detection thresholds across variable production conditions. Unlike single-frequency systems, dual-frequency operation enables dynamic compensation for changes in product conductivity and temperature, significantly reducing false reject rates while maintaining sensitivity to sub-millimeter metallic particles. The APEX 100 serves as an entry-level configuration optimized for standard-conveyed dry goods; the APEX 300 extends performance to higher-speed, wider-belt applications; and the APEX 500 integrates advanced signal processing algorithms and expanded I/O for integration into fully automated, GMP-compliant manufacturing environments.

Key Features

• Dual-frequency electromagnetic induction architecture for stable detection in electrically challenging products (e.g., high-salt, high-moisture, or conductive matrices)
• IP65- and NEMA 4-rated stainless steel (304) housing with integrated blue epoxy-sealed bore liner—resistant to abrasion, impact, and cleaning agents used in CIP/SIP protocols
• Icon-driven, multilingual touchscreen control panel with guided setup workflows, context-sensitive help, and automatic calibration routines that eliminate manual gain adjustment
• Modbus™ RTU/ASCII communication protocol support for seamless integration with PLCs, SCADA systems, and MES platforms—enabling real-time status monitoring, parameter remote setting, and alarm logging
• Compact mechanical footprint and modular mounting design facilitate retrofit installation on existing conveyors, chutes, or gravity-fed pipelines without major line modifications
• Robust firmware architecture compliant with deterministic response timing requirements for inline rejection systems—ensuring synchronization with pneumatic or mechanical reject actuators

Sample Compatibility & Compliance

The APEX series is validated for continuous operation in environments subject to washdown, dust ingress, and ambient temperature fluctuations typical of Class 100,000 cleanrooms and ISO 22000-certified food production facilities. Its electromagnetic detection principle imposes no radiation hazard and requires no consumables or radioactive sources—fully aligning with FDA 21 CFR Part 11 data integrity expectations when paired with audit-trail-enabled host software. While not certified to IEC 61508 SIL2 out-of-the-box, the system supports functional safety integration via external safety relays and conforms to EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU. Documentation packages include Factory Acceptance Test (FAT) reports, electrical schematics, and traceable calibration certificates issued per ISO/IEC 17025-accredited procedures.

Software & Data Management

The APEX detector operates autonomously but interfaces bidirectionally with supervisory control layers via Modbus registers. Critical operational parameters—including detection threshold, frequency pair selection, belt speed input, reject delay time, and event counters—are programmable through the HMI or remotely. All alarm events (detection triggers, self-test failures, communication timeouts) are timestamped and stored locally in non-volatile memory for up to 30 days. When connected to Thermo Fisher’s optional Metal Detection Analytics Suite (MDAS), users gain access to trend analysis dashboards, batch-level contamination reporting, and configurable email/SMS alerts—supporting root-cause investigation and preventive maintenance planning. Full audit trail functionality—including user login history, parameter change logs, and calibration records—is available under administrator privilege and satisfies GLP/GMP documentation requirements.

Applications

• Inline detection of metal fragments in cereal, flour, sugar, coffee beans, and spice blends on vibratory or belt conveyors
• Post-mix inspection of dry pharmaceutical blends prior to tablet compression or capsule filling
• Verification of metal-free status in recycled plastic flake streams prior to extrusion
• Final check of sealed pouches, cartons, and blister packs containing medical devices or diagnostic reagents
• Gravity-fed inspection of granular fertilizers, animal feed pellets, and detergent powders in bulk handling systems

FAQ

Does the APEX series require periodic recalibration by a certified technician?

No—auto-calibration is performed at power-up and can be manually triggered via the HMI. However, annual verification using traceable test samples (e.g., Fe/Cu/SS spheres per ASTM F2476) is recommended for quality assurance programs.
Can the APEX 100 detect stainless steel in wet meat products?

Yes—dual-frequency operation improves sensitivity to austenitic stainless steel (e.g., 304, 316) in high-conductivity matrices, though optimal aperture sizing and product presentation (e.g., uniform layer thickness) remain essential.
Is Modbus TCP supported, or only Modbus RTU/ASCII?

The standard interface is Modbus RTU over RS-485. Modbus TCP is available via optional gateway module (part number MD-GW-ETH), enabling Ethernet-based integration with modern DCS platforms.
What is the maximum allowable belt speed for the APEX 300 model?

Up to 2.5 m/s for standard configurations; speeds exceeding 1.8 m/s require optional high-speed signal processing firmware and synchronized encoder input for accurate reject timing.
Are replacement parts and firmware updates available globally?

Yes—Thermo Fisher maintains regional spares depots in Shanghai, Singapore, and Rotterdam. Firmware revisions are distributed exclusively through authorized service partners following formal change control documentation.