Yiheng BSX2 Series Programmable Box-Type Muffle Furnace
| Brand | Yiheng |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Instrument Type | Box Furnace |
| Maximum Temperature | 1200 °C |
| Temperature Control Accuracy | ±1 °C |
| Heating Rate (to Max Temp) | ≤45 °C/min |
| Heating Element | Fe-Cr-Al Alloy Resistance Wire |
| Internal Dimensions | Model-Dependent |
| Nominal Volume | Model-Dependent |
Overview
The Yiheng BSX2 Series Programmable Box-Type Muffle Furnace is an engineered thermal processing system designed for precise, repeatable high-temperature applications in research laboratories, quality control environments, and materials development facilities. Operating on resistive heating principles, the furnace utilizes Fe-Cr-Al alloy heating elements embedded within a high-purity silicon carbide–reinforced ceramic fiber insulation matrix—optimized for rapid thermal response, low thermal mass, and exceptional energy efficiency. With a maximum operating temperature of 1200 °C and a certified control accuracy of ±1 °C across its full range, the BSX2 series supports standardized thermal treatments including ashing, calcination, sintering, heat treatment, and pre-conditioning of ceramic, metallic, and composite specimens. Its double-wall structural architecture—comprising outer cold-rolled steel housing and inner ceramic fiber chamber—minimizes surface temperature rise during operation, enabling safe proximity placement in shared lab spaces without auxiliary ventilation.
Key Features
- Programmable multi-segment temperature control with up to 7 independent profiles, each supporting 9 programmable steps (63 total steps), with time settings ranging from 0 to 5999 minutes per step.
- Dual-layer insulated chamber construction with active air-cooling fan integrated into the outer casing, maintaining external surface temperature near ambient (<45 °C at 1200 °C internal setpoint).
- Microprocessor-based PID temperature controller with real-time digital display, manual/automatic mode switching, and built-in ramp-soak functionality.
- Comprehensive safety architecture including over-temperature cut-off (mechanical and electronic), door interlock switch, heater failure detection, thermocouple break monitoring, EEPROM memory integrity verification, and audible/visual alarm activation for all fault conditions.
- Lightweight ceramic fiber furnace lining (density ~220 kg/m³) providing superior thermal insulation, reduced warm-up time (≤45 °C/min to 1200 °C), and extended service life under cyclic thermal loading.
Sample Compatibility & Compliance
The BSX2 series accommodates a broad range of sample forms—including crucibles (alumina, quartz, stainless steel), petri dishes, powder compacts, and small-volume metallurgical specimens—within its configurable internal chamber dimensions (standard models range from 3L to 36L nominal volume). All units comply with IEC 61000-6-3 (EMC emission standards) and IEC 61000-6-2 (immunity requirements). The temperature control system meets ISO/IEC 17025 traceability guidelines when calibrated using NIST-traceable reference thermocouples (Type K or S). While not intrinsically rated for hazardous area use, optional modifications—including explosion-proof wiring conduits and purge-compatible door seals—are available upon request for specialized industrial validation protocols.
Software & Data Management
The BSX2 integrates RS485 serial communication (Modbus RTU protocol) for remote monitoring and data logging via third-party SCADA or LIMS platforms. Optional USB-to-RS485 adapters enable direct connection to Windows-based PCs running Yiheng’s proprietary YH-TempLog software, which supports real-time temperature graphing, profile upload/download, event-triggered data capture, and CSV export compliant with FDA 21 CFR Part 11 requirements (when used with validated user authentication and audit trail configuration). All program parameters and operational logs are stored in non-volatile memory with timestamped entries, supporting GLP/GMP documentation workflows and internal calibration record retention.
Applications
- Ash content determination per ASTM D3174, ISO 1171, and USP <281> for pharmaceutical excipients and dietary supplements.
- Thermal gravimetric analysis (TGA) sample pre-treatment and residue stabilization prior to coupling with analytical instrumentation.
- Sintering of advanced ceramics (e.g., alumina, zirconia) and metal oxide powders under controlled atmospheric conditions (ambient air only; inert gas compatibility requires optional gas inlet kit).
- Heat treatment of calibration standards, reference materials, and sensor components requiring dimensional stability at elevated temperatures.
- Residue ignition testing for environmental soil and wastewater sludge per EPA Method 9080A and ISO 11464.
FAQ
What thermocouple type is standard on the BSX2 series?
Type K (chromel-alumel) thermocouples are factory-installed and calibrated; Type S (platinum-rhodium) options are available for enhanced stability above 1000 °C.
Can the BSX2 be operated continuously at 1200 °C?
Yes—continuous operation at maximum rated temperature is supported, provided ambient room temperature remains ≤30 °C and adequate clearance (≥15 cm) is maintained around all cabinet surfaces.
Is the furnace compatible with inert or reducing atmospheres?
Standard configuration is for air atmosphere only; optional quartz tube inserts with flanged gas ports and vacuum-rated door gaskets enable controlled N₂, Ar, or H₂/N₂ mixtures (requires separate gas flow controller and pressure relief setup).
How often should the temperature uniformity be verified?
Per ISO/IEC 17025 and internal QA protocols, uniformity mapping (9-point test per ASTM E2203) is recommended every 6 months or after 200 operational cycles, whichever occurs first.
Does the BSX2 support automated start/stop via external PLC signals?
Yes—dry-contact inputs for remote start, stop, and hold functions are accessible via the rear terminal block, enabling integration into automated batch processing lines.
