CZGY 101-3A Forced-Air Precision Drying Oven
| Brand | CZGY |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | 101-3A |
| Instrument Type | Precision Drying Oven |
| Temperature Range | RT + 10 to 300 °C |
| Temperature Uniformity | ±1 °C |
| Temperature Fluctuation | ±1 °C |
| Control Range | RT + 10 to 300 °C |
| Chamber Dimensions (W × D × H) | 500 × 600 × 750 mm |
| Temperature Resolution | 0.1 °C |
| Interior Material | Stainless Steel |
| Heating Method | Forced-Air Circulation (Rear-Mounted Heating Element) |
| Power Supply | 220 V AC |
| Rated Power | 2500 W |
| Temperature Control Accuracy | ±0.5 °C |
| Timer Range | 0–9999 minutes/hours |
Overview
The CZGY 101-3A Forced-Air Precision 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 forced convection heating, it employs a rear-mounted heating element coupled with a high-efficiency axial fan and optimized internal airflow ducting to ensure uniform heat distribution across the entire working chamber. Unlike bottom-heated ovens—whose radiant heating configuration poses documented fire hazards and inconsistent thermal gradients—the 101-3A’s rear-mounted, air-circulated architecture eliminates hot-spot formation, reduces thermal stratification, and enhances both safety and repeatability. Its operational envelope spans from ambient +10 °C to 300 °C, supporting applications including moisture loss determination, pre-weighing sample conditioning, polymer curing, pharmaceutical stability testing, and inert atmosphere-compatible drying when used with optional purge fittings.
Key Features
- Stainless steel interior chamber (500 × 600 × 750 mm) resistant to corrosion, oxidation, and repeated thermal cycling
- Double-wall construction with mineral wool insulation between outer cold-rolled steel shell and inner chamber, minimizing thermal loss and external surface temperature rise
- High-transparency, high-temperature tempered glass observation window integrated into the door for real-time visual monitoring without opening
- Digital segment-type LCD controller with fuzzy PID algorithm, enabling stable setpoint maintenance and rapid thermal recovery after door openings
- Forced-air circulation system with adjustable airflow velocity and directional baffles to optimize laminar flow patterns and reduce turbulence-induced temperature variance
- Independent over-temperature protection circuit (mechanical backup thermostat) compliant with IEC 61000-4-2/4-3 immunity standards
- 0.1 °C temperature resolution and ±0.5 °C control accuracy, verified per ASTM E2209-18 calibration methodology
Sample Compatibility & Compliance
The 101-3A accommodates standard laboratory ware including porcelain crucibles, aluminum weighing dishes, stainless steel trays, and borosilicate glass containers. Its chamber geometry supports stacked shelf configurations (up to three optional shelves, load-rated at 15 kg each). The unit conforms to general-purpose laboratory equipment safety requirements outlined in GB/T 2893.1–2022 (Chinese national standard equivalent to ISO 3864-1), and its electrical design meets CE marking prerequisites under the Low Voltage Directive (2014/35/EU) and EMC Directive (2014/30/EU). While not intrinsically rated for hazardous area use, it may be operated in conjunction with external nitrogen purge systems for oxygen-sensitive drying protocols. Documentation includes factory calibration certificate traceable to NIM (National Institute of Metrology, China).
Software & Data Management
The 101-3A operates via embedded firmware with no external PC dependency. All operational parameters—including setpoint, actual chamber temperature, elapsed time, remaining timer duration, and fault codes—are displayed on the front-panel LCD. The controller logs up to 100 event timestamps (e.g., door open/close, over-temperature alarm, power interruption) with non-volatile memory retention. For regulatory environments requiring audit trails, optional RS-485 Modbus RTU interface enables integration into centralized SCADA or LIMS platforms supporting 21 CFR Part 11-compliant electronic record archiving when paired with validated middleware. Data export is supported via USB-to-serial adapter (not included) using standard ASCII protocol.
Applications
- Moisture content analysis per AOAC 950.46 and USP <1251> guidelines
- Pre-drying of filter papers, gravimetric filters, and ceramic sintering substrates
- Thermal aging studies of elastomers and thermoplastics under ISO 188 conditions
- Residual solvent removal from coated films and printed electronics substrates
- Desiccation of hygroscopic reference standards prior to analytical weighing
- Conditioning of particulate samples before BET surface area measurement
FAQ
What safety certifications does the 101-3A hold?
It complies with GB 4706.1–2005 (equivalent to IEC 60335-1) for household and similar electrical appliances, and undergoes routine dielectric strength and leakage current testing during final QA.
Can the oven be used for sterilization?
No—it lacks steam generation, pressure containment, or validated microbial lethality profiles required for sterilization; it is intended solely for drying, baking, and thermal conditioning.
Is the temperature uniformity verified across the full volume?
Yes, uniformity mapping per ISO 17025-accredited procedures confirms ±1 °C deviation at nine designated points (center + eight corners) at 105 °C and 250 °C.
Does the unit support programmable ramp-soak profiles?
No—this model features single-setpoint control only; multi-step thermal profiling requires upgrade to the CZGY 101-3AP series.
What maintenance is recommended for long-term reliability?
Biannual inspection of fan bearings, cleaning of air intake grilles, and verification of door gasket compression force using a calibrated force gauge (recommended interval: every 6 months under continuous operation).
