Yamato DKN302 Forced-Air Constant Temperature Oven
| Brand | Yamato |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | DKN302 |
| Instrument Type | General-Purpose Drying Oven |
| Temperature Range | 10–260 °C |
| Temperature Uniformity | ±1 °C |
| External Dimensions (W×D×H) | 410 × 451 × 670 mm |
| Internal Chamber Dimensions (W×D×H) | 300 × 300 × 300 mm |
Overview
The Yamato DKN302 Forced-Air Constant Temperature Oven is an entry-level yet rigorously engineered general-purpose drying and heat-treatment oven designed for routine laboratory applications requiring stable thermal environments. Utilizing a horizontal forced-air convection system with a rear-mounted fan and optimized baffle configuration, the DKN302 ensures uniform airflow distribution across the entire 27 L internal chamber (300 × 300 × 300 mm), minimizing thermal gradients and supporting reproducible drying, curing, sterilization pre-treatment, and moisture removal protocols. Its operational range spans from ambient +10 °C up to 260 °C—covering standard ISO/IEC 17025-compliant drying procedures (e.g., ASTM D2240 for rubber hardness sample conditioning, ISO 527-2 for polymer specimen preconditioning) and common QC workflows in pharmaceutical, materials science, and academic labs. The unit complies with IEC 61010-1 safety standards for electrical equipment for measurement, control, and laboratory use, and its construction adheres to JIS B 7971 (Japanese Industrial Standard for laboratory ovens).
Key Features
- Forced-air convection system with adjustable rear fan speed for enhanced temperature homogeneity (±1 °C at setpoint, measured per IEC 60068-3-5)
- Dual independent temperature control: main PID-controlled heating circuit + separate mechanical overheat protection cut-off (adjustable up to 280 °C)
- Three-programmable ramp-soak sequences: up to 30 steps per program, with loop repetition, automatic start/stop, and hold-to-completion modes
- Simultaneous digital display of set temperature, actual chamber temperature, and user-defined overheat limit
- Integrated safety suite: ground-fault circuit interrupter (GFCI), thermal fuse, door-open interlock, key-lock function, and self-diagnostic startup check
- Stainless steel inner chamber (SUS304) with reinforced double-wall insulation and silicone-sealed door gasket for minimal heat loss
Sample Compatibility & Compliance
The DKN302 accommodates standard laboratory glassware (e.g., Petri dishes, weighing bottles, crucibles) and metal trays up to 280 mm square. Its chamber geometry supports ASTM E145 Class II (gravity/convection) equivalence for non-critical thermal processing. While not certified for GMP manufacturing environments, it meets essential requirements for GLP-aligned laboratories performing method validation, stability testing (per ICH Q1A), or residual solvent removal under SOP-controlled conditions. It is compatible with USP drying guidelines for pharmaceutical excipients and supports ISO 9001 internal calibration traceability when used with NIST-traceable thermocouple probes.
Software & Data Management
The DKN302 operates via embedded firmware with no external PC dependency. All program data—including step duration, target temperature, ramp rate, and loop count—is stored in non-volatile memory and retained during power interruption. Optional RS-232 interface (available via accessory module) enables basic logging to external terminals or legacy LIMS systems. For audit-ready environments, users may integrate third-party USB data loggers (e.g., Omega OM-DAQPRO-5300) compliant with FDA 21 CFR Part 11 requirements when paired with appropriate electronic signature workflows and access controls.
Applications
- Drying of filter papers, soil samples, and biological specimens prior to gravimetric analysis (e.g., ASTM D2234, ISO 1172)
- Pre-conditioning of polymeric test specimens per ISO 291 and ASTM D618
- Curing of coatings, adhesives, and composite layups in R&D settings
- Moisture content determination in food, feed, and agricultural products (AOAC 950.46)
- Thermal stabilization of reference standards and calibration weights
- Pre-heating of glassware and metal components before sterilization or analytical use
FAQ
Is the DKN302 suitable for sterilization applications?
No—this model is not validated for microbiological sterilization. It lacks the temperature uniformity certification, documentation package, and HEPA filtration required for autoclave or dry-heat sterilizer compliance.
Can the DKN302 be used for ash content determination?
It is not recommended for ashing; maximum temperature (260 °C) falls below typical muffle furnace requirements (≥500 °C). Use Yamato FO-series muffle furnaces instead.
Does the unit support external temperature probe input?
Not natively—the built-in PT100 sensor measures chamber air temperature only. External probe integration requires optional analog output module (DKN-EXPO) and third-party DAQ hardware.
What is the typical warm-up time to reach 100 °C?
Approximately 12–15 minutes from ambient (25 °C), depending on load mass and chamber fill level.
Is service and calibration support available outside Japan?
Yes—authorized Yamato service partners provide on-site calibration (traceable to national standards), preventive maintenance, and firmware updates in APAC, EMEA, and North America regions.
