JingHong SXL-1008 Box-Type Muffle Furnace
| Brand | JingHong |
|---|---|
| Origin | Shanghai, China |
| Model | SXL-1008 |
| Type | Box-Type Muffle Furnace |
| Max Temperature | 1000 °C |
| Temperature Control Accuracy | ±3 °C |
| Rated Power | 4000 W |
| Heating Rate | 300–1000 °C (typical ramp) |
| Heating Method | Resistance Wire Heating |
| Internal Chamber Dimensions | 200 × 300 × 120 mm (W × D × H) |
| Temperature Range | 300–1000 °C |
| Controller | 30-Stage Programmable Digital PID Controller |
| Safety Interlock | Automatic Power Cut-off on Door Opening/Closing |
Overview
The JingHong SXL-1008 Box-Type Muffle Furnace is a laboratory-grade resistive heating furnace engineered for precise thermal treatment of solid samples under controlled ambient conditions. Designed in accordance with standard muffle furnace architecture, it isolates the heating chamber from external atmosphere and combustion byproducts—ensuring uniform temperature distribution and minimal contamination during ashing, calcination, heat treatment, or pre-drying applications. Its ceramic fiber-insulated chamber and high-density refractory lining provide thermal stability and rapid heat retention, while the integrated resistance wire heating system delivers consistent energy input across the full operating range (300–1000 °C). The furnace complies with fundamental safety and performance expectations for Class I, Group A laboratory thermal equipment per IEC 61010-1:2010 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use).
Key Features
- 30-stage programmable digital PID temperature controller with dual digital display: real-time setpoint and actual chamber temperature shown simultaneously for traceable process monitoring.
- Automatic safety interlock circuitry that de-energizes the heating elements immediately upon door opening—and re-engages only after full closure—meeting basic functional safety requirements for operator protection.
- Stainless steel construction for both front panel and door surface, offering corrosion resistance, mechanical durability, and ease of cleaning in routine lab environments.
- Patented ergonomic door mechanism: hinges positioned to rotate the door backward (away from operator), preventing direct exposure to hot surfaces; closed door forms a stable horizontal platform suitable for temporary placement of crucibles or sample trays.
- Ceramic fiber insulation layer (≥120 mm thickness) ensures low external surface temperature (<50 °C at ambient conditions) and reduced standby power consumption.
- Front-access terminal block for optional external data logging or integration into centralized lab control systems via analog 0–10 V or 4–20 mA signal output (available upon request with compatible controller upgrade).
Sample Compatibility & Compliance
The SXL-1008 accommodates standard laboratory crucibles (alumina, porcelain, quartz, stainless steel) up to 100 mL volume within its 7.2 L internal chamber (200 × 300 × 120 mm). It supports gravimetric ashing procedures per ASTM E171, ISO 2167, and USP , as well as thermal decomposition studies compliant with GLP documentation standards. While not certified to UL or CE for standalone sale in North America/EU, the unit meets core electrical safety and thermal performance benchmarks required for internal use in QA/QC laboratories operating under ISO/IEC 17025-accredited quality management systems. All materials in contact with the heating zone are inert and non-outgassing above 1000 °C.
Software & Data Management
The built-in 30-segment programmable controller stores up to 10 independent heating profiles, each configurable with ramp rate, soak time, and hold temperature. Event logs—including start/stop timestamps, peak temperature achieved, and door open/close events—are retained in non-volatile memory for post-run review. Optional RS485 Modbus RTU interface enables connection to SCADA platforms or LIMS for automated data capture, supporting audit trail generation required under FDA 21 CFR Part 11 when paired with validated software and electronic signature protocols. No proprietary software license is required for basic operation.
Applications
- Residue ash content determination in food, pharmaceutical, and environmental samples (e.g., AOAC 942.05, EPA Method 200.2).
- Pre-treatment of catalysts and ceramic precursors prior to sintering or XRD analysis.
- Thermal stability assessment of polymers and composites under inert or air atmospheres.
- Calibration of thermocouples and reference materials using fixed-point temperature cycles.
- Controlled oxidation studies of metallic alloys and powder metallurgy feedstocks.
FAQ
What is the maximum recommended continuous operating temperature?
The SXL-1008 is rated for continuous operation at 1000 °C. Prolonged use above this limit may accelerate degradation of heating elements and insulation integrity.
Does the furnace support inert gas purging?
Yes—two 6-mm NPT threaded ports (one inlet, one outlet) are located on the rear wall for optional nitrogen or argon purge setup. Gas flow rate must be externally regulated to maintain safe internal pressure differential.
Is calibration certificate included with shipment?
A factory-as-tested temperature uniformity report (measured at three points within the chamber at 500 °C and 900 °C) is provided. NIST-traceable calibration certification is available as an add-on service.
Can the controller be upgraded to support Ethernet or USB connectivity?
The base controller does not include native Ethernet or USB ports; however, third-party industrial gateways (e.g., Modbus-to-Ethernet converters) can be deployed for network integration without hardware modification.
What maintenance intervals are recommended?
Visual inspection of heating element continuity and insulation integrity every 200 operational hours; annual verification of thermocouple accuracy against a calibrated reference source is advised for GxP-regulated environments.
