Yiheng BPG-9240A Precision Forced-Air Drying Oven
| Brand | Yiheng |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic (China-Made) |
| Model | BPG-9240A |
| Instrument Type | Precision Drying Oven |
| Temperature Range | RT+10°C to 250°C |
| Temperature Fluctuation | ±1°C |
| Internal Chamber Volume Options | 40 L / 80 L / 150 L / 250 L / 400 L |
| Temperature Resolution | 0.1°C |
| Interior Material | Mirror-Finish Stainless Steel (SUS304) |
| Heating Method | Forced-Air Convection |
| Temperature Uniformity | ±2.5% at 100°C (measured per IEC 60068-3-5) |
| Optional Data Interfaces | RS-485, USB (for U-disk data export), Printer Port |
| Programmable Stages | 7 programs × 9 steps each (63 total steps) |
| step duration | 0–5999 min |
| Safety Features | Independent Over-Temperature Cut-Off with Audible/Visual Alarm |
| Diagnostic Display | Real-time Fault Code Reporting on LCD |
Overview
The Yiheng BPG-9240A Precision Forced-Air Drying Oven is an engineered solution for controlled thermal processing in research laboratories, quality control environments, and industrial R&D settings. Designed around the principle of uniform convective heat transfer, it employs a high-efficiency axial fan and optimized air duct geometry to ensure consistent airflow distribution across the entire working chamber. This architecture supports reproducible drying, curing, sterilization, and pre-conditioning applications where precise temperature maintenance and spatial uniformity are critical—particularly in compliance-driven workflows such as those governed by ISO/IEC 17025, ASTM E145, or pharmacopeial drying protocols (e.g., USP <1251>).
Key Features
- High-Resolution Thermal Control: Equipped with a microprocessor-based PID controller offering 0.1°C temperature resolution and ±1°C fluctuation tolerance over the full operating range (RT+10°C to 250°C), enabling fine-grained process tuning.
- Optimized Chamber Design: Mirror-finish SUS304 stainless steel interior with seamless, radius-rounded corners minimizes contamination traps and simplifies cleaning—critical for GLP/GMP-aligned sample preparation workflows.
- Intelligent Programmability: Supports up to seven independent multi-step programs (63 total steps), each configurable with target temperature, dwell time (0–5999 minutes), ramp rate, and fan speed—enabling complex thermal profiles without manual intervention.
- Real-Time Diagnostics: Integrated self-diagnostic system displays standardized fault codes (e.g., E01 for sensor open-circuit, E03 for heater failure) directly on the backlit LCD interface, reducing troubleshooting time and supporting preventive maintenance logs.
- Flexible Integration: Standard 25 mm diameter access port on the left chamber wall allows for external probe insertion or cable routing; optional RS-485, USB (U-disk), and parallel printer interfaces facilitate traceable data capture aligned with FDA 21 CFR Part 11 requirements when paired with compliant software.
Sample Compatibility & Compliance
The BPG-9240A accommodates a wide range of sample formats—including Petri dishes, weighing bottles, crucibles, polymer films, and coated substrates—within its five standard internal volume configurations (40 L to 400 L). Its forced-air convection system meets the performance criteria outlined in IEC 60068-3-5 for temperature uniformity (±2.5% deviation at 100°C, measured at nine defined test points). The unit complies with GB/T 5170.2 (Chinese national standard equivalent to IEC 60068-2-2 for dry heat testing) and incorporates dual safety layers: primary PID-controlled heating and a hardware-independent over-temperature cut-off circuit with audible/visual alarm activation.
Software & Data Management
While the BPG-9240A operates autonomously via its onboard controller, optional connectivity modules enable integration into centralized lab informatics systems. The RS-485 interface supports Modbus RTU protocol for bidirectional communication with SCADA or LIMS platforms. USB data export (via FAT32-formatted U-disk) records timestamped temperature logs at user-defined intervals, generating CSV files suitable for audit trail reconstruction. When used with validated third-party software, the system can satisfy electronic record retention requirements under 21 CFR Part 11, including user authentication, audit trail generation, and data integrity safeguards.
Applications
- Moisture content determination per AOAC 950.46 and ISO 5530-1
- Thermal stability testing of pharmaceutical excipients and active ingredients
- Curing of epoxy resins, adhesives, and composite laminates
- Pre-drying of analytical samples prior to gravimetric analysis or elemental testing
- Accelerated aging studies for packaging materials and electronics components
- Residue ashing support in environmental and food safety laboratories
FAQ
What is the maximum allowable operating temperature for the BPG-9240A?
The unit is rated for continuous operation from ambient +10°C up to 250°C, with thermal protection circuits activated above 260°C.
Does the oven support validation documentation packages (IQ/OQ/PQ)?
Yes—Yiheng provides factory calibration certificates traceable to CNAS-accredited standards; users may perform IQ/OQ using the built-in diagnostic codes and temperature mapping procedures outlined in the operator manual.
Can the fan speed be adjusted during a programmed cycle?
Yes—fan speed is programmable per step, allowing optimization of airflow intensity for sensitive samples or rapid thermal transitions.
Is the stainless steel interior electropolished or passivated?
The chamber uses standard mirror-finish SUS304 stainless steel; electropolishing is available as a custom option upon request.
How is temperature uniformity verified across different chamber volumes?
Uniformity is validated per IEC 60068-3-5 using nine-sensor mapping at 100°C; results are documented in the出厂 calibration report shipped with each unit.
