Hanuo 101-0ES High-Temperature Forced-Air Drying Oven
| Brand | Hanuo |
|---|---|
| Origin | Shanghai, China |
| Model | 101-0ES |
| Instrument Type | High-Temperature Drying Oven |
| Temperature Range | 200–300 °C |
| Temperature Uniformity | ±0.5 °C |
| Interior Material | Mirror-Finish Stainless Steel (AISI 304) |
| Heating Method | Forced Convection via Adjustable Axial Fan |
| Control Accuracy | ±0.1 °C (digital display range) |
| Timer Range | 1–9999 minutes/hours |
| Safety Features | Over-Temperature Protection, Fan-Off Interlock Switch |
| Optional Controller | Programmable LCD Microprocessor-Based Temperature Controller |
Overview
The Hanuo 101-0ES High-Temperature Forced-Air Drying Oven is an engineered thermal processing system designed for precise, repeatable, and contamination-controlled drying, baking, sterilization, and thermal stabilization in regulated laboratory environments. Operating on the principle of forced convection—where a calibrated axial fan circulates heated air uniformly across the chamber—the oven ensures rapid thermal equilibration and minimal spatial temperature gradients. Its operational envelope spans 200 °C to 300 °C, making it suitable for applications requiring elevated thermal stability beyond standard ambient-plus drying ovens (e.g., residual solvent removal from polymer films, pre-conditioning of high-temperature ceramics, or accelerated aging per ASTM D573). The unit complies with fundamental safety and performance expectations outlined in IEC 61010-1 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use) and supports GLP-compliant workflows through traceable temperature control and configurable event logging.
Key Features
- Microprocessor-based digital temperature controller with 0.1 °C resolution and ±0.1 °C display accuracy over full operating range
- Forced-air circulation system featuring adjustable-speed axial fan and optimized baffle geometry to maintain ≤±0.5 °C temperature uniformity (measured at 5-point chamber mapping per ISO 17025 calibration practice)
- Mirror-finish AISI 304 stainless steel interior chamber—welded using argon-shielded TIG process—to resist oxidation, facilitate cleaning, and minimize particulate shedding
- Dual-layer tempered glass observation window with integrated seal, enabling real-time visual monitoring without compromising thermal integrity
- Independent over-temperature cut-off circuit (mechanical backup) and programmable timer with 1–9999 min/h range, supporting unattended operation under defined thermal protocols
- Electrostatically applied epoxy-polyester powder-coated carbon steel exterior for corrosion resistance and mechanical durability in shared lab settings
Sample Compatibility & Compliance
The 101-0ES accommodates a broad spectrum of sample formats—including Petri dishes, weighing boats, crucibles, glassware, and metal trays—without risk of thermal distortion or catalytic surface interaction. Its stainless steel chamber meets USP requirements for inertness in pharmaceutical drying applications and is compatible with autoclave-compatible accessories. While not certified for Class II biological safety or explosion-proof use, the oven satisfies general-purpose thermal validation needs under ISO/IEC 17025-accredited laboratories when paired with external NIST-traceable data loggers. It supports routine IQ/OQ documentation per GMP Annex 15 and may be integrated into FDA 21 CFR Part 11–compliant systems when used with optional programmable controller and audit-trail-enabled software.
Software & Data Management
The base configuration includes a stand-alone microcontroller with non-volatile memory storing up to 10 user-defined setpoints and runtime logs. When equipped with the optional programmable LCD controller, the oven supports multi-step ramp-soak profiles, real-time graphing via USB export (CSV format), and timestamped event records—including door openings, fan status changes, and alarm triggers. All logged data retain metadata (operator ID, protocol name, start/stop timestamps) to fulfill ALCOA+ data integrity principles. No cloud connectivity or proprietary drivers are required; exported files are natively readable in Excel, LabArchives, or ELN platforms compliant with 21 CFR Part 11 electronic signature standards.
Applications
- Residual moisture determination in active pharmaceutical ingredients (APIs) per USP
- Thermal curing of epoxy resins and silicone elastomers prior to mechanical testing
- Pre-drying of gravimetric filters and desiccants in environmental water analysis (EPA Method 1664)
- Accelerated stability testing of packaging materials under ICH Q1A(R3) guidelines
- Sterilization of reusable stainless steel tools in low-bioburden research labs (non-medical grade)
- Conditioning of reference standards before calibration of thermogravimetric analyzers (TGA)
FAQ
What is the maximum continuous operating temperature of the 101-0ES?
The unit is rated for sustained operation at 300 °C, verified via factory thermal mapping and documented in the Certificate of Conformance.
Does the oven include a calibration certificate?
A factory-as-tested calibration report (covering sensor linearity, uniformity, and stability at 200 °C, 250 °C, and 300 °C) is supplied with each unit. NIST-traceable field recalibration is supported using standard PT100 probes.
Can the fan speed be manually adjusted during operation?
Yes—the fan operates at three discrete speeds (low/medium/high), selectable via front-panel switch, allowing optimization of airflow for delicate samples or high-mass loads.
Is the chamber volume specified in the technical documentation?
Chamber volume is derived from internal dimensions (provided upon request); nominal capacity is 28 L, consistent with DIN 12880 Class B oven classification for high-temperature stability.
How is over-temperature protection implemented?
Two independent safeguards: (1) primary PID-controlled cutoff at user-set limit +5 °C, and (2) secondary mechanical thermostat tripping at 320 °C—both interrupting heater power without affecting controller functionality.
