YANRUN AMM-200ST Trinocular Upright Metallurgical Microscope with Integrated Data Processing System

Overview

The YANRUN AMM-200ST is a precision-engineered trinocular upright metallurgical microscope designed for routine and advanced microstructural characterization of polished metallographic specimens. Unlike inverted configurations optimized for bulk or thick samples, the upright architecture of the AMM-200ST provides direct access to the specimen surface—critical for high-resolution imaging of etched alloys, heat-treated steels, sintered powders, and coated substrates. Its optical path incorporates an infinity-corrected plan achromatic objective system (cover-slip-free design), ensuring minimal spherical and chromatic aberration across the full magnification range (40×–1000× with 10×/16× eyepieces). The integrated data processing system enables real-time digitization, geometric measurement, and standardized quantitative analysis—including grain size evaluation per ASTM E112 (comparison and planimetric methods), phase-area fraction calculation, and non-metallic inclusion assessment compliant with ASTM E45 and ISO 4967. The system operates under Köhler illumination principles, delivering uniform, glare-free incident light essential for reproducible contrast in differential interference contrast (DIC)-compatible observation modes.

Key Features

• Trinocular head with 30° inclined viewing tube and interpupillary adjustment (55–75 mm), optimized for extended operator ergonomics and simultaneous visual observation + digital capture
• Ball-bearing quad-position nosepiece ensures precise, repeatable objective alignment and long-term mechanical stability during frequent lens switching
• Coaxial coarse/fine focusing mechanism with 40 mm vertical travel and 2 µm fine-focus graduation—enabling sub-micron Z-axis positioning accuracy for focus stacking and depth profiling
• Dual-voltage halogen illumination (110 V / 220 V input) with continuously variable brightness control and built-in filter slots for pale blue (enhances contrast on ferrite-pearlite structures) and pale green (improves resolution on austenitic grain boundaries)
• Large-format mechanical stage (160 mm × 130 mm) with vernier-scaled X/Y translation (76 mm × 50 mm range, 0.1 mm resolution) supports systematic tile-based scanning of large-area cross-sections
• Standardized data processing module compliant with GLP documentation requirements: timestamped image metadata, audit-trail-enabled measurement logs, and export-ready reports in PDF/CSV formats

Sample Compatibility & Compliance

The AMM-200ST accommodates standard metallographic specimens up to 30 mm in height and 50 mm in diameter, including mounted epoxy/resin-embedded sections, vacuum-plated conductive coatings, and electropolished titanium or nickel alloys. Its cover-slip-free objectives eliminate refractive index mismatch errors common in thin-film or multi-layered coating analysis. All optical components meet ISO 10110 surface quality standards (scratch-dig 60–40), and the illumination system satisfies IEC 61000-3-2 harmonic emission limits. Quantitative analysis workflows are validated against ASTM E1382 (stereological grain size), ASTM E45 (inclusion rating), and ISO 643 (microstructure classification), supporting regulatory submissions in aerospace, automotive, and power generation sectors where traceability and method validation are mandatory.

Software & Data Management

The embedded data processing system runs on a dedicated ARM-based controller with Linux OS, eliminating dependency on external PCs. Image acquisition supports 12-bit dynamic range at 2592 × 1944 pixel resolution (via optional CMOS sensor integration). Measurement algorithms include automatic edge detection (Canny/Sobel), threshold-based phase segmentation, and calibrated linear/area/distance quantification. All datasets retain EXIF-compliant metadata: objective magnification, exposure time, lamp intensity, stage coordinates, and user ID. Audit trails record every parameter change, measurement execution, and report export—fully compliant with FDA 21 CFR Part 11 electronic signature and record retention requirements when deployed in GMP-regulated QA/QC laboratories.

Applications

• Failure analysis of fracture surfaces in structural steels and aluminum castings
• Grain boundary characterization in creep-resistant superalloys (e.g., Inconel 718, Nimonic 80A)
• Porosity and dendrite arm spacing quantification in additive-manufactured Ti-6Al-4V builds
• Carbide distribution mapping in tool steels (e.g., AISI D2, M2) post-tempering
• Coating thickness verification and interfacial delamination assessment in thermal barrier systems
• Educational use in materials science curricula for ASTM-standardized microstructural reporting

FAQ

Is the AMM-200ST compatible with third-party image analysis software such as ImageJ or Olympus Stream?

Yes—the system exports TIFF and BMP files with embedded calibration metadata, enabling seamless import into open-source or commercial platforms. However, native quantitative modules (e.g., ASTM E112 grain sizing) require the integrated data processing firmware.
Can oil immersion objectives be added to this configuration?

The standard AMM-200ST includes spring-loaded dry objectives only. An optional 100×/NA 1.25 oil immersion achromat (cover-slip corrected) is available as a factory-upgrade kit, requiring recalibration of the condenser aperture and illumination alignment.
Does the data processing module support multi-user permission levels?

Yes—administrator, technician, and viewer roles can be assigned via password-protected login; each role has configurable access to measurement tools, report generation, and system settings.
What is the warranty coverage and service response time for international customers?

YANRUN provides a 24-month parts-and-labor warranty. Certified field service engineers support APAC, EMEA, and North America regions, with standard response time of ≤5 business days for hardware-level diagnostics and calibration.