Santiyiqi FERRITE-CHECK 140 Portable Ferrite Meter

Overview

The Santiyiqi FERRITE-CHECK 140 Portable Ferrite Meter is an industrial-grade, handheld instrument engineered for rapid, non-destructive quantification of ferrite content in austenitic stainless steels and duplex stainless steels. It operates on the magnetic induction principle—measuring the perturbation of a low-frequency magnetic field induced by the ferromagnetic δ-ferrite phase within otherwise paramagnetic austenitic or duplex microstructures. This method is standardized under DIN EN ISO 8249:2018, which defines calibration protocols, measurement uncertainty limits, and acceptance criteria for ferrite assessment in weld metal and base materials. The device delivers results as both Ferrite Number (FN), per the ASTM E562–22 correlation scale, and direct weight percentage of ferrite (Fe %), enabling traceable interpretation across international fabrication and inspection workflows. Its compact form factor, integrated probe architecture, and single-button interface make it suitable for field use in welding qualification, QA/QC audits, and in-service inspection of piping, pressure vessels, and structural components in oil & gas, nuclear, chemical processing, and shipbuilding sectors.

Key Features

• Compliance-certified operation per DIN EN ISO 8249:2018 and aligned with ASTM E562–22 methodology for FN derivation
• Integrated Hall-effect magnetic sensor with built-in temperature compensation to minimize thermal drift during extended field use
• High-contrast OLED display supporting dual-unit output: Ferrite Number (FN) and Fe %, with automatic unit switching
• Three-point calibration using NIST-traceable ferrite reference standards (certified FN values: 5, 30, and 70), ensuring metrological traceability
• Continuous-scan mode for dynamic surface profiling—records up to 20 measurements per second while moving the probe; automatically computes min/max/mean upon lift-off
• Single-button ergonomic interface with multilingual menu system (English, German, French, Spanish, Chinese)
• Bluetooth Low Energy (BLE) v5.0 wireless communication for real-time data streaming and offline synchronization

Sample Compatibility & Compliance

The FERRITE-CHECK 140 is validated for use on flat, curved, or mildly rough surfaces of welded joints, heat-affected zones (HAZ), and base metals in austenitic (e.g., AISI 304, 316) and duplex (e.g., UNS S32205, S32750) stainless steels. Surface finish requirements align with ISO 8503-1:2017 (Sa 2.5 or better); measurements on polished or ground surfaces yield optimal repeatability (±0.5 FN). It is not intended for use on ferritic-martensitic steels, nickel alloys, or clad materials without prior validation. Regulatory alignment includes support for GLP/GMP documentation workflows: all BLE-transmitted datasets include timestamp, GPS coordinates (when enabled on host device), operator ID, and instrument serial number—facilitating audit readiness under ISO 17025, ASME BPVC Section V, and EN 15614-1 welding procedure qualification frameworks.

Software & Data Management

Lima Connect—a free, cross-platform application—is provided for comprehensive data governance. Compatible with Android (v10+), iOS (v14+), and Windows 10/11, it enables project-based organization of measurement campaigns, geotagged photo annotation of weld locations, and customizable report generation. Raw measurement logs are stored locally and exportable in CSV format for statistical analysis in Excel or Minitab. Graphical visualization includes trend plots (FN vs. position), histogram distributions, and pass/fail overlays against user-defined specification limits (e.g., ASME IX: FN 30–60 for duplex welds). All app-generated reports include digital signatures, audit trails, and version-stamped metadata compliant with FDA 21 CFR Part 11 requirements when deployed on validated Windows systems.

Applications

• Welding procedure qualification (WPQ) and welder performance qualification (WPQ) per ASME IX, ISO 15614-1, and EN 15614-1
• In-process verification of ferrite balance in multipass welds on offshore platforms and subsea pipelines
• Post-weld heat treatment (PWHT) validation where ferrite reversion or decomposition must be monitored
• Failure analysis investigations involving stress corrosion cracking (SCC) or hydrogen-induced cracking (HIC) in duplex stainless steel systems
• Supplier material certification and incoming inspection at fabrication yards and EPC contractors
• Training and demonstration of microstructural control principles in metallurgical engineering curricula

FAQ

What standards does the FERRITE-CHECK 140 comply with?

It conforms to DIN EN ISO 8249:2018 for measurement methodology and calibration, and its FN output correlates with ASTM E562–22.
Can it measure on curved or narrow-diameter pipes?

Yes—the probe’s 8 mm active diameter and flexible cable allow stable contact on radii ≥25 mm; curvature correction factors are embedded in firmware.
Is calibration required before each use?

No; daily verification using one reference standard is recommended per ISO 8249, but full three-point calibration is needed after sensor replacement or annual metrological review.
Does the device store measurements internally if Bluetooth is unavailable?

No—it operates in real-time streaming mode only; however, Lima Connect caches data on the paired mobile device during temporary disconnection.
How is traceability maintained for calibration standards?

Each set includes a certificate of calibration issued by an ILAC-accredited lab, referencing NIST SRM 579 (Ferritic Stainless Steel) and traceable to EURAMET CG-19 guidelines.