Zhuochi SXL-1008 Programmable Box-Type Muffle Furnace
| Brand | Zhuochi |
|---|---|
| Origin | Zhejiang, China |
| Model | SXL-1008 |
| Chamber Dimensions | 300 × 200 × 120 mm |
| Maximum Operating Temperature | 1000 °C |
| Temperature Uniformity | ±1 °C |
| Power Rating | 4 kW |
| Voltage | 220 V AC, 50 Hz |
| Control System | 30-Stage Programmable Microcomputer Controller |
| Safety Features | Dual Over-Temperature Protection, Earth Leakage & Electric Shock Protection |
| Construction | Matte Powder-Coated Steel Enclosure, Stainless Steel Door Liner and Front Panel |
| Heating Element | High-Durability Resistance Wire |
| Compliance | Designed for GLP-compliant thermal processing environments |
Overview
The Zhuochi SXL-1008 Programmable Box-Type Muffle Furnace is a precision-engineered laboratory furnace designed for reproducible high-temperature thermal treatment in research, quality control, and materials development laboratories. Based on resistive heating principles with embedded thermocouple feedback and PID-controlled solid-state relays, the SXL-1008 delivers stable, uniform thermal profiles up to 1000 °C within its insulated ceramic-fiber-lined chamber. Its muffle architecture isolates samples from direct contact with heating elements and combustion byproducts—ensuring contamination-free, oxidation-controlled environments essential for metallurgical annealing, ceramic sintering, ash content determination (per ASTM E1755), and residue analysis (in accordance with ISO 21527-1). The unit meets fundamental safety and electromagnetic compatibility requirements aligned with IEC 61000-6-3 and IEC 61000-6-4, and its structural design supports routine operation under GLP and ISO/IEC 17025-accredited laboratory conditions.
Key Features
- 30-segment programmable temperature controller enabling precise ramp-hold-cool profiles—including adjustable heating rates, multi-step isotherms, and automatic end-of-cycle shutdown.
- Chamber constructed with high-density ceramic fiber insulation and reinforced stainless steel inner lining (door and front panel) for long-term dimensional stability and corrosion resistance.
- Matte-textured powder-coated exterior compliant with European industrial finish standards (RAL 9005 or equivalent), enhancing durability and ease of decontamination.
- Dual independent over-temperature protection circuits: primary limit set at 1050 °C and secondary hardware cutoff at 1100 °C—both independently wired and fail-safe.
- Integrated earth leakage circuit breaker (30 mA sensitivity) and reinforced grounding system meeting IEC 61008-1 requirements for personnel safety.
- Front-panel LED display with real-time temperature readout, program status indicator, and error-code diagnostics for rapid troubleshooting.
Sample Compatibility & Compliance
The SXL-1008 accommodates standard crucibles (alumina, quartz, nickel, or stainless steel), ceramic boats, and small metallic specimens up to 300 × 200 × 120 mm in volume. It supports applications requiring inert-atmosphere adaptation via optional quartz tube insertion or nitrogen purge port (accessory). The furnace is routinely deployed in ASTM E831 (thermal stability), ASTM C373 (water absorption in ceramics), and USP heavy metals residue testing workflows. Its ±1 °C temperature accuracy—verified per ISO/IEC 17025 calibration protocols—is traceable to national metrology institutes when paired with an external Class I thermocouple calibrator. All electrical components comply with RoHS Directive 2011/65/EU and CE marking directives for low-voltage equipment (LVD 2014/35/EU).
Software & Data Management
An optional RS485/USB interface enables connection to PC-based monitoring software (Windows-compatible, no proprietary OS required). The software logs timestamped temperature data at user-defined intervals (1–60 s), generates CSV-exportable thermal profiles, and supports audit-trail functionality—including operator ID tagging and modification history—for compliance with FDA 21 CFR Part 11 Annex 11 requirements. Raw data files retain full metadata (program ID, start/stop times, deviation alerts), facilitating retrospective analysis and report generation in accordance with ISO 17025 clause 7.7. No cloud dependency or subscription model is required; local storage ensures data sovereignty and network isolation in regulated environments.
Applications
- Heat treatment of small-scale ferrous and non-ferrous alloys (annealing, tempering, solution heat treatment).
- Thermal gravimetric analysis (TGA) sample pre-conditioning and residue quantification.
- Ceramic green-body sintering and glaze firing under controlled ambient conditions.
- Organic matrix removal from composite materials prior to SEM/EDS analysis.
- Ash content determination in pharmaceutical excipients, foodstuffs, and environmental filter media.
- Calibration of thermocouples and RTDs using fixed-point reference materials (e.g., Al, Zn, Sn ITS-90 points).
FAQ
What is the maximum recommended continuous operating temperature?
The SXL-1008 is rated for continuous operation at 1000 °C. Prolonged use above this threshold may accelerate heating element degradation and compromise temperature uniformity.
Can the furnace be operated under inert gas flow?
Yes—via optional side-mounted N₂ inlet port (M8 thread) and exhaust vent; compatible with flow rates up to 1.5 L/min for oxygen-sensitive processes.
Is factory calibration documentation provided?
Each unit ships with a manufacturer’s certificate of conformance, including as-tested temperature uniformity data across the working zone at 800 °C and 1000 °C.
What maintenance is required for long-term reliability?
Annual inspection of door gasket integrity, thermocouple junction continuity, and heating element resistance (±5% tolerance); ceramic fiber insulation should be visually assessed for cracking or compression loss.
Does the controller support remote start/stop via digital I/O?
Yes—the rear terminal block includes dry-contact inputs for external trigger signals (e.g., PLC handshake) and alarm relay outputs for facility-wide safety interlocks.
