仪景通 EVDENT TERRA II Portable X-ray Diffractometer

Overview

The EVDENT TERRA II Portable X-ray Diffractometer is a battery-powered, field-deployable powder X-ray diffractometer engineered for rapid, on-site crystalline phase identification and semi-quantitative analysis. Based on Bragg’s law and conventional θ–2θ geometry, the TERRA II utilizes Cu Kα radiation (λ = 1.5418 Å) and a high-efficiency silicon-strip detector to acquire diffraction patterns from polycrystalline samples in real time. Unlike benchtop XRD systems requiring fixed laboratory infrastructure—such as water cooling, high-voltage transformers, or compressed gas—this instrument operates autonomously via integrated rechargeable lithium-ion batteries, enabling uninterrupted operation for up to six hours under typical field conditions. Its ruggedized IP54-rated enclosure ensures reliable performance in harsh environments including mine sites, drilling rigs, cement plants, and geological survey zones. The system is optimized for qualitative and quantitative mineralogical analysis using Rietveld refinement-ready data output, supporting trace-phase detection with enhanced signal-to-noise ratio due to upgraded detector firmware and optimized beam collimation.

Key Features

• Battery-operated architecture eliminating dependency on AC mains, external chillers, or gas supplies
• Vibratory sample stage minimizing preferred orientation effects—enabling robust data acquisition from as little as 15 mg of ≤150 µm powdered material
• Integrated SwiftMin™ software suite providing real-time phase ID, semi-quantitative analysis, and automated report generation directly on-device or via remote wireless interface
• Wi-Fi 802.11n and Bluetooth 4.2 connectivity for seamless integration with laptops, tablets, and smartphones—supporting live pattern viewing, parameter adjustment, and scheduled or manual data export
• Pre-loaded calibration standards and factory-validated instrument alignment protocols ensuring measurement reproducibility across operators and locations
• Compact footprint (32 × 24 × 20 cm) and lightweight design (<12 kg) facilitating transport in standard field kits or vehicle-mounted deployment

Sample Compatibility & Compliance

The TERRA II accepts dry, homogenized powders prepared using included field tools (mortar & pestle, sieve set, micro-spatula). It supports analysis of inorganic crystalline phases including oxides, silicates, carbonates, sulfates, and metal alloys. Amorphous content estimation is possible via background subtraction and internal standard methods. The system complies with core principles outlined in ASTM D7348 (Standard Test Method for Determination of Crystallinity of Polyethylene by X-ray Diffraction), ISO 13320 (Particle size analysis — Laser diffraction methods), and USP (X-Ray Diffraction), and its data structure is compatible with GLP/GMP audit trails when paired with validated SwiftMin™ configuration settings. No regulatory submission-grade validation package is included by default, but IQ/OQ documentation templates are available upon request for qualified users.

Software & Data Management

SwiftMin™ runs natively on the TERRA II’s embedded ARM-based processor and offers three operational modes: Quick Scan (5–30 s), High-Resolution Scan (2–10 min), and Custom Method (user-defined step scan parameters). All acquired patterns are stored in industry-standard .raw and .xy formats, fully compatible with third-party refinement platforms such as TOPAS, GSAS-II, and HighScore Plus. Automatic metadata tagging includes timestamp, GPS coordinates (when enabled), operator ID, and environmental sensor readings (temperature, humidity). Data encryption (AES-256) and role-based access control ensure secure handling in regulated environments. For laboratories operating under FDA 21 CFR Part 11 requirements, optional SwiftMin™ Enterprise Edition provides electronic signature capability, full audit trail logging, and user permission hierarchies.

Applications

• Mineral exploration and grade control in open-pit and underground mining operations
• Wellsite lithology logging and cuttings analysis during oil & gas drilling campaigns
• Raw material verification and clinker phase monitoring in cement manufacturing
• Catalyst composition screening and spent catalyst degradation assessment in petrochemical refineries
• Pharmaceutical polymorph identification and excipient compatibility testing
• Forensic analysis of explosives residues, pigments, and illicit substances in security applications
• Field-based geotechnical characterization and soil mineralogy mapping

FAQ

Is the TERRA II suitable for quantitative Rietveld analysis?
Yes—while optimized for rapid phase ID, the instrument delivers full-pattern diffraction data with sufficient resolution and intensity stability to support external Rietveld refinement using standard software packages.

Does it require annual recalibration?
No scheduled recalibration is mandated; however, daily verification using the built-in Si reference standard is recommended per ASTM E975. Full calibration checks are advised every 12 months or after mechanical shock events.

Can it analyze wet or unground samples?
No—only dry, finely ground powders ≤150 µm are supported. Moisture or coarse particles introduce scattering artifacts and orientation bias that compromise phase identification fidelity.

What safety certifications does it hold?
The TERRA II conforms to IEC 61010-1 (Safety Requirements for Electrical Equipment) and carries FCC Part 18 and CE marking for electromagnetic compatibility and radiation safety compliance.

Is remote firmware update supported?
Yes—over-the-air (OTA) updates are delivered via encrypted HTTPS channel through SwiftMin™ Cloud Sync, with version rollback capability and integrity checksum verification.