BOXUN BGZ Series Forced-Air Drying Oven
| Brand | BOXUN |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Models | BGZ-30 / BGZ-70 / BGZ-140 / BGZ-240 / BGZ-76 / BGZ-146 / BGZ-246 |
| Instrument Type | General-Purpose Forced-Air Oven |
| Temperature Range | Ambient +5°C to 250°C (up to 300°C for high-temp models) |
| Temperature Uniformity | ±1°C |
| Exterior Dimensions | 640×485×545 mm (varies by model) |
| Interior Chamber Dimensions | 350×350×350 mm (varies by model) |
| Interior Material | Mirror-Finish Stainless Steel |
| Heating Method | Forced-Air Convection with Adjustable Fan Speed |
Overview
The BOXUN BGZ Series Forced-Air Drying Oven is an engineered solution for precise, repeatable thermal processing in laboratory and industrial quality control environments. Based on forced convection thermodynamics, it maintains uniform temperature distribution across the chamber through a regulated air circulation system—critical for applications requiring consistent drying kinetics, thermal stabilization, or low-temperature sterilization. Unlike natural convection ovens, the BGZ series employs a brushless DC motor-driven blower and optimized ducted airflow architecture to minimize thermal gradients (<±1°C deviation), ensuring compliance with ASTM E145–22 (Standard Specification for Gravity-Convection and Forced-Ventilation Ovens) and supporting GLP/GMP-aligned workflows where spatial temperature reproducibility is essential.
Key Features
- Mirror-finish 304 stainless steel interior chamber resistant to corrosion, oxidation, and cleaning agent degradation—designed for long-term exposure to solvents, aqueous residues, and repeated thermal cycling.
- Microprocessor-based PID temperature controller with LCD interface, offering 0.1°C resolution, programmable ramp-soak profiles (up to 10 segments × 100 cycles), and real-time display of setpoint, actual temperature, elapsed time, and remaining time.
- Intelligent fan speed modulation synchronized with heating stage—reducing turbulence during sensitive sample conditioning while increasing airflow during rapid heat-up or moisture removal phases.
- Double-layer insulated door with nano-composite sealing gasket and tempered glass viewport (large viewing area) enables visual monitoring without compromising thermal integrity or operator safety.
- Comprehensive safety architecture: over-temperature cut-off (independent mechanical backup thermostat), automatic power recovery after interruption, non-volatile parameter memory, and audible/visual alarm activation upon deviation exceeding user-defined thresholds.
- Standard RS-485 communication port compliant with Modbus RTU protocol—enabling integration into centralized lab management systems for remote monitoring, data logging, and audit-trail generation per FDA 21 CFR Part 11 requirements when paired with validated software.
Sample Compatibility & Compliance
The BGZ series accommodates standard laboratory ware including Petri dishes, weighing boats, glass vials, aluminum pans, and ceramic crucibles. Its uniform airflow design minimizes edge-effect drying and supports ISO 5725–2 accuracy validation protocols for gravimetric moisture analysis. The stainless steel chamber complies with USP guidance on equipment suitability for pharmaceutical residual solvent testing. High-temperature variants (BGZ-76/146/246) meet ASTM D129–21 specifications for petroleum product evaporation residue determination. All models are CE-marked and conform to IEC 61010–1:2010 for electrical safety in laboratory equipment.
Software & Data Management
When connected via RS-485 to compatible host systems (e.g., LabVIEW, custom SCADA, or BOXUN’s optional PC-based monitoring suite), the oven provides timestamped temperature logs at configurable intervals (1–60 sec). Optional accessories include thermal printer modules (supporting real-time curve printing with calibration traceability), GPRS-enabled SMS alerting for out-of-spec events, and scheduled start/stop functionality for unattended overnight operation. Audit trail records—including user ID, parameter changes, alarm triggers, and power status transitions—are retained locally and exportable as CSV or PDF for regulatory review.
Applications
- Moisture content determination per AOAC 950.46 and ISO 712 for food, feed, and agricultural commodities.
- Pre-conditioning of polymer samples prior to tensile or DSC analysis (ASTM D618).
- Drying of filter papers and precipitates in environmental water testing (EPA Method 160.1).
- Low-temperature sterilization of glassware and reusable tools in biosafety Level 2 laboratories (WHO TRS 961 Annex 2).
- Curing of coatings, adhesives, and printed circuit board laminates under controlled thermal ramp profiles.
- Accelerated aging studies per ISO 11341 for UV-stabilized materials using stabilized ambient +5°C to 250°C operating envelope.
FAQ
What is the maximum allowable operating temperature for the BGZ-30 model?
The BGZ-30 is rated for continuous operation up to 250°C; short-term excursions to 260°C are permissible but not recommended for routine use.
Does the oven support validation documentation for IQ/OQ/PQ protocols?
Yes—factory calibration certificates (NIST-traceable reference sensors), installation checklists, and operational qualification templates are available upon request for GxP-regulated facilities.
Can multiple BGZ units be daisy-chained to a single RS-485 master controller?
Yes—the Modbus RTU implementation supports up to 32 addressable devices on one bus, enabling centralized fleet management.
Is the stainless steel chamber electropolished or passivated?
Chambers undergo chemical passivation per ASTM A967 to enhance corrosion resistance and reduce particle shedding in cleanroom-adjacent applications.
How is temperature uniformity verified during factory testing?
Each unit undergoes 3-point chamber mapping (top/mid/bottom, center/left/right) per VDI/VDE 2655 Sheet 1 using calibrated Class A PT100 probes; results are included in the delivery dossier.
