FAQ:
Q1: What are the unique features of the Yamato DH Series? A: The DH Series represents Yamato's elite line of Precision, Large Capacity, and Extreme High-Temperature Fine Ovens. The defining unique feature of this series is its ability to maintain incredibly strict thermal control at much higher temperatures than standard ovens. It features an advanced programmable controller with 3 modes (up to 90 segments total), manual exhaust dampers for quick cooling, and specialized finned stainless steel heating tubes. Whether you need precise horizontal airflow up to 360°C (DH411C/611C), massive industrial capacities up to 1000 Liters (DH811C/1011C), or specialized extreme-temperature ovens capable of reaching 500°C (DH450C/650C), this series delivers uncompromised, high-heat thermal precision.
Q2: What are the internal size, external size, and capacity in Liters for the DH models? A: Because this series spans standard precision, large-capacity, and 500°C models, it offers a vast range of dimensions to suit any facility:
DH411C (91 Liters - 360°C): Internal dimensions are 450 × 450 × 450 mm (W×D×H) | External dimensions are 1050 × 630 × 850 mm.
DH611C (216 Liters - 360°C): Internal dimensions are 600 × 600 × 600 mm (W×D×H) | External dimensions are 1200 × 778 × 1000 mm.
DH811C (512 Liters - 300°C): Internal dimensions are 800 × 800 × 800 mm (W×D×H) | External dimensions are 1500 × 1015 × 1340 mm.
DH1011C (1000 Liters - 300°C): Internal dimensions are 1000 × 1000 × 1000 mm (W×D×H) | External dimensions are 1700 × 1215 × 1540 mm.
DH450C (91 Liters - 500°C Type): Internal dimensions are 450 × 450 × 450 mm (W×D×H) | External dimensions are 1200 × 800 × 1150 mm.
DH650C (216 Liters - 500°C Type): Internal dimensions are 600 × 600 × 600 mm (W×D×H) | External dimensions are 1350 × 950 × 1300 mm.
Q3: What are the maximum and minimum operating temperatures? A: The operating temperature range is uniquely high and depends entirely on the specific configuration you choose:
For the massive large-capacity models (DH811C / DH1011C), the range is from Room Temperature + 10°C up to 300°C.
For the precision models (DH411C / DH611C), the range is from Room Temperature + 10°C up to 360°C.
For the extreme high-temperature models (DH450C / DH650C), the range extends from Room Temperature + 10°C up to a massive 500°C.
Q4: What is the temperature distribution accuracy of the oven? A: The DH series provides industry-leading thermal distribution accuracy even at extreme heat. The 360°C precision models (DH411C/611C) deliver an accuracy of ±2.5°C (at 360°C) with an internal fluctuation of just ±0.2°C. The large capacity 300°C models (DH811C/1011C) provide ±5.0°C (at 300°C) with a fluctuation of ±0.3°C. The extreme 500°C models (DH450C/650C) provide a distribution accuracy of ±5.0°C (at 500°C) and a fluctuation of ±1.0°C (at 500°C).
Q5: How long does it take to reach the maximum temperature? A: The ultra-high-power heating elements (ranging from 2.7kW up to 9.0kW) are engineered for rapid thermal recovery. The 360°C precision models and the 300°C large-capacity models take approximately 80 minutes to reach their respective maximum temperatures. Remarkably, the extreme 500°C models (DH450C/650C) utilize powerful alloy heating wires to reach their maximum 500°C in just approximately 60 minutes.
Q6: What are the internal and exterior materials, and what are the advantages of the insulator? A: The internal chamber is constructed from premium stainless steel plate, offering excellent corrosion resistance, durability, and effortless daily cleaning. The exterior is built from cold-rolled steel plate finished with a chemical-proofing coating, protecting the unit from harsh environments. Because of the extreme high temperatures, the insulation is specialized:
Standard Precision models (360°C) utilize rock wool and centrifugal glass wool.
Large capacity models (300°C) utilize advanced aluminosilicate cotton.
The 500°C models utilize a heavy-duty combination of aluminosilicate cotton and ceramic fiber blocks. These high-grade insulators aggressively prevent heat dissipation, ensure rock-solid internal stability at extreme temperatures, lower energy consumption, and keep the exterior completely safe for operators to touch.
Q7: What applications is this oven suitable for and what are its key features? A: The DH series is the ultimate solution for demanding thermal processing, precise temperature characteristic experiments, and high-volume industrial baking requiring temperatures above the standard 260°C. Its horizontal forced convection provides unparalleled uniformity. The DH450C/650C specifically caters to aerospace component testing, advanced materials research, and continuous thermal processing where an extreme 500°C environment is strictly required.
Q8: What are the built-in safety features? A: Safety is a paramount priority for Yamato, especially when operating at industrial scales or at 500°C. The DH series comes fully equipped with a highly responsive self-diagnostic circuit that instantly detects temperature sensor anomalies, automatic overheating risks, heater disconnections, and SSR short-circuits. It also includes an independent overheating preventer, an overcurrent leakage protection circuit breaker, a power failure compensation function, and a key lock function to secure your experimental settings against accidental tampering.
Q9: What is the shelf load weight capacity? A: Every single model in the DH series features heavy-duty stainless steel shelves (wire mesh or punched plate) structurally engineered to support a substantial load capacity of 30 kg per layer, making it perfect for massive sample batches and dense industrial components.
Q10: Is the price affordable while maintaining Japanese quality? A: Absolutely. Yamato is fiercely dedicated to providing incredibly cost-effective laboratory solutions. Even with extreme 500°C capabilities and massive 1000L volumes, the DH series is deliberately NOT priced at a premium. This gives your laboratory direct access to an elite standard of Japanese manufacturing without breaking the budget. You receive an instrument built with over 130 years of Yamato’s strict quality control, rigorous testing, and rich engineering heritage, ensuring complete confidence in the long-term reliability and value of your investment.
Q11: When and why should we use this oven? A: You should choose the DH series when your testing requirements demand temperatures ranging from 300°C up to an extreme 500°C. If your laboratory conducts mission-critical materials testing or requires industrial-scale batch curing (up to 1000 Liters) at these high heat thresholds with unparalleled fluctuation control, this series provides the exact scale, power, and uncompromised Japanese reliability you need.
Q12: What standard ports and optional accessories are available? A: The DH ovens come standard with a cable port located on the back (30mm inner diameter on standard models; 50mm on 500°C models) and specialized exhaust dampers (manual) for quick cooling. To maximize utility, you can optionally add extra stainless steel shelves, robust matching stands (OP42/45C or OP62/65C), automatic dampers (for 500°C models), automatic doors, viewing windows, a micro printer, a data logger, combination warning lights, external communication functions (RS485), temperature output terminals (4~20mA), centralized monitoring software, and a touch screen controller upgrade.
Q13: Can these ovens be customized to suit specific customer needs? A: Yes. Recognizing that every laboratory has distinct workflows, Yamato can customize the DH series to a certain level to suit specific customer needs. Whether you require specific port placements for external testing cables, unique data output terminals, specialized centralized monitoring integrations, or automated vent hardware, Yamato’s flexible manufacturing approach ensures your high-temperature Fine Oven perfectly matches your facility's operational requirements.
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