KY-104C Tube-Type Infrared Carbon Analyzer

Overview

The KY-104C Tube-Type Infrared Carbon Analyzer is a dedicated elemental combustion analyzer engineered for precise quantification of total carbon content in solid inorganic and metallurgical samples. It operates on the principle of high-temperature combustion followed by non-dispersive infrared (NDIR) detection. Samples are introduced into a high-efficiency tube furnace operating at controlled temperatures up to 1350 °C, where complete oxidation converts carbon to CO₂. The evolved gas stream is dried, filtered, and directed through a thermoelectrically stabilized NDIR cell optimized for the 4.26 µm absorption band of CO₂. This architecture ensures high specificity, low baseline drift, and minimal cross-sensitivity to sulfur oxides or water vapor—critical for reproducible carbon determination in iron alloys, ores, ceramics, and refractory materials.

Key Features

• Robust tube furnace design with integrated high-pressure gas delivery system and dual-stage metal filtration to maintain laminar, particle-free carrier gas flow (O₂ or purified air).
• High-stability pyroelectric infrared detector with low-noise signal conditioning circuitry, delivering enhanced signal-to-noise ratio and long-term baseline stability.
• Custom platinum-based infrared source with extended lifetime (>5000 h), optimized spectral output centered at 4.26 µm, and uniform radiant intensity across operational cycles.
• Fully modular electronic architecture featuring industrial-grade linear power supply modules, minimizing ripple and thermal drift under continuous operation.
• Dual mechanical and chemical filtration system upstream of the detector chamber to eliminate particulate interference and reduce maintenance frequency.
• Flexible sample introduction interface supporting integration with third-party analytical balances (0.0001 g resolution) for unweighted (variable-mass) sample loading and automated mass registration.

Sample Compatibility & Compliance

The KY-104C accommodates solid, non-volatile samples including ferrous and non-ferrous metals, cementitious materials, graphite electrodes, silicon carbide, and geological specimens. Sample mass range is typically 0.1–1.0 g, depending on expected carbon concentration (detection range: 0.0005–10.00 wt% C). The instrument meets core functional requirements aligned with ASTM E1019 (Standard Test Methods for Determination of Carbon, Sulfur, Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt Alloys) and ISO 15350:2021 (Steel — Determination of total carbon content — Infrared absorption method after combustion in an induction furnace). While not certified to FDA 21 CFR Part 11 out-of-the-box, its software architecture supports audit trail extension and user access control configuration for GLP/GMP-aligned environments upon customization.

Software & Data Management

The KY-104C is operated via a Windows XP–based native application developed in Delphi, providing full localization for Chinese-language laboratories. The software implements comprehensive sample lifecycle management—including customizable sample IDs, operator tagging, batch grouping, and metadata annotation. Real-time dual-channel visualization displays CO₂ evolution kinetics alongside reference baseline tracking. All raw signals, calibration parameters, and final results are stored in Microsoft Access database format (.mdb), enabling structured querying by date, operator, sample ID, or analysis channel. Data export supports CSV and Excel formats. Built-in diagnostics verify furnace seal integrity and IR cell vacuum status prior to analysis initiation. Software features include blank subtraction, multi-point calibration curve fitting, channel-specific sensitivity adjustment, statistical summary (mean, SD, RSD), and overlay comparison of release profiles across sessions.

Applications

• Quality control of carbon steel, stainless steel, and cast iron production batches.
• Carbon specification verification in graphite anodes and cathode materials for battery manufacturing.
• Raw material screening of limestone, dolomite, and calcined clays in cement plants.
• Research-grade carbon stoichiometry assessment in advanced ceramics and composite precursors.
• Environmental testing of slag and fly ash for residual organic carbon content.
• Method validation support in accredited metallurgical testing laboratories seeking ISO/IEC 17025 compliance.

FAQ

What types of samples are compatible with the KY-104C?

Solid, non-hygroscopic, non-volatile materials with carbon content between 0.0005 and 10.00 wt%, including metals, ores, refractories, and inorganic powders.
Does the instrument require carrier gas purification?

Yes—oxygen or compressed air must be passed through desiccant and hydrocarbon traps to prevent moisture and oil contamination of the IR cell.
Can the software generate LIMS-compatible reports?

Raw data export in CSV format enables direct import into most laboratory information management systems; custom API integration is available upon request.
Is the furnace temperature programmable?

The tube furnace operates at a fixed optimal combustion temperature (1350 °C); ramping or multi-step thermal protocols are not supported.
How often does the infrared detector require recalibration?

Under normal use, annual verification against certified reference materials (CRMs) is recommended; factory calibration is traceable to NIST SRMs.