Shanghai Youyi DHG-9995A Industrial Forced-Air Drying Oven (1000 L, 300 °C)

Overview

The Shanghai Youyi DHG-9995A is a high-capacity, forced-air industrial drying oven engineered for precision thermal processing in demanding laboratory and production environments. Designed according to GB/T 30435–2013 (the Chinese national standard for electrically heated drying ovens), this 1000 L unit employs a robust convection-based heating architecture to ensure uniform temperature distribution across its full stainless-steel chamber. Its operational range of RT+20 °C to 300 °C supports a broad spectrum of thermal applications—from moisture removal and polymer curing to sterilization validation and pre-conditioning of electronic components. The oven utilizes a dual-layer, high-transparency observation window with tempered glass, enabling real-time visual monitoring without compromising thermal integrity or operator safety. Its structural design integrates an efficient rear-mounted air circulation system with automatic intake/exhaust dampers, eliminating manual ventilation adjustment and facilitating consistent vapor evacuation during extended drying cycles.

Key Features

• Microprocessor-based intelligent temperature controller with 0.1 °C resolution, programmable timer (1–9999 min), and over-temperature alarm with independent hardware cutoff (optional)
• Mirror-finish 304 stainless steel interior chamber (1000 × 1000 × 1000 mm) resistant to corrosion, oxidation, and cleaning agents; adjustable stainless steel shelving (standard: 3 trays)
• High-efficiency horizontal airflow system with optimized duct geometry and centrifugal blower—validated to achieve ±2.5% temperature uniformity at 100 °C (empty chamber, ISO 17025-compliant test conditions)
• Dual-sealed door with high-temperature silicone gasket ensures long-term sealing performance and minimizes heat loss
• Electrostatically coated cold-rolled steel exterior (1145 × 1200 × 1390 mm) for mechanical durability and chemical resistance
• Configurable optional interfaces: RS485 serial port with PC-compatible data logging software, embedded thermal printer, inert gas inlet port with calibrated float-type flowmeter (0–10 L/min), and 25/50 mm test ports

Sample Compatibility & Compliance

The DHG-9995A accommodates large-format samples—including stacked PCB assemblies, composite material panels, pharmaceutical blister packs, agricultural grain batches, and sterilization validation loads—without spatial constraint. Its chamber volume and uniform airflow profile meet functional requirements for ASTM E2297 (Standard Guide for Validation of Thermal Processing Equipment) and support GLP/GMP-aligned process qualification when paired with external calibrated thermocouples and data loggers. While not certified to IEC 61010-1 or UL 61010B out-of-the-box, the unit’s electrical architecture complies with GB 4793.1–2019 (safety requirements for electrical equipment for measurement, control, and laboratory use). Documentation packages—including factory calibration reports, wiring schematics, and GB/T 30435–2013 conformance statements—are available upon request for audit readiness.

Software & Data Management

When equipped with the optional RS485 interface and bundled software, the DHG-9995A enables time-stamped temperature logging at user-defined intervals (1 s to 60 min), export to CSV/Excel, and graphical trend analysis. The software supports multi-oven fleet monitoring and generates audit trails compliant with FDA 21 CFR Part 11 requirements when deployed with role-based user authentication and electronic signature modules. Optional embedded printers provide hard-copy records of setpoints, actual chamber temperatures, and elapsed time—critical for batch release documentation in regulated industries such as medical device manufacturing and contract pharmaceutical development.

Applications

• Moisture content determination per AOAC 950.46 and USP <1251> in food, feed, and botanical raw materials
• Curing of epoxy resins, silicone elastomers, and powder coatings under controlled ramp-hold-cool profiles
• Pre-baking of lithium-ion battery electrode sheets prior to calendaring and cell assembly
• Thermal aging studies of polymers and packaging films per ISO 188 and ASTM D573
• Depyrogenation validation of glassware and stainless-steel components in biopharmaceutical cleanrooms
• Stabilization of reference standards and hygroscopic reagents in metrology laboratories

FAQ

What is the maximum validated operating temperature, and is it sustained across the full chamber volume?
The DHG-9995A is rated for continuous operation up to 300 °C. Temperature uniformity testing per GB/T 30435–2013 confirms ±2.5% deviation at 100 °C; higher-temperature uniformity is verified on-site during IQ/OQ protocols using NIST-traceable sensors.

Does the oven support programmable multi-step temperature profiles?
Yes—when fitted with the optional multi-segment programmable controller (sold separately), users can define up to 30 segments with independent ramp rates, dwell times, and cooling logic.

Can inert gas purging be integrated for oxygen-sensitive processes?
Yes—the optional inert gas inlet kit includes a brass body float flowmeter (0–10 L/min, ±5% FS accuracy) and quick-connect fittings compatible with nitrogen, argon, or forming gas supply lines.

Is technical documentation provided in English for international compliance purposes?
English-language operation manuals, electrical schematics, and GB/T 30435–2013 conformance summaries are supplied with all export units. Full GMP validation support packages (DQ/IQ/OQ templates, risk assessments) are available under NDA.