250°C Vacuum Drying Oven for Laboratory and Industrial Applications

describe

250°C vacuum drying oven enables efficient moisture removal, precise temperature control, and stable performance for laboratory and industrial applications.

Product Features

Automatic temperature control

• The furnace is equipped with an advanced intelligent temperature control system based on a PID algorithm combined with a self-tuning function, ensuring highly accurate and stable temperature regulation throughout the entire heating process. By using a precise setpoint (SV) control mode, the system continuously monitors and adjusts heating output to maintain optimal thermal conditions, minimizing fluctuations and improving process consistency.
• The timer function is highly flexible and can be freely switched between hours, minutes, or seconds according to different process requirements. This allows users to configure precise time control for various applications, including laboratory experiments, material heat treatment, and industrial processing tasks. The system also provides two timing modes: manual and automatic. In manual mode, timing begins immediately once the system is started, offering direct control for simple operations. In automatic mode, timing only starts when the set temperature is fully reached, ensuring accurate process synchronization and improving experimental reliability.
• To enhance safety and operational control, the system is equipped with an audible and visual alarm function. When the preset time is reached or a timeout condition occurs, the system will immediately trigger both sound and light alarms to alert the operator. At the same time, the equipment will automatically shut down to prevent overheating, material damage, or process deviation.
• This intelligent combination of PID temperature control, flexible timing functions, and automatic safety shutdown provides precise process management, improved operational safety, and reliable performance. It is widely suitable for laboratory research, material testing, drying processes, and high-precision industrial thermal applications.

Door opening method

• The furnace door is designed with a robust and user-friendly structure, opening axially up to 180 degrees to the side, which provides wide and unobstructed access to the furnace chamber. This design greatly facilitates loading and unloading of samples, improving operational efficiency and ensuring convenient handling during laboratory and industrial use.
• The door locking mechanism is positioned on the side and features a precision-engineered spring-loaded locking system. This structure ensures secure and stable closure during operation while maintaining reliable sealing performance under high-temperature conditions. The spring-loaded design allows the lock to maintain consistent pressure on the door seal, preventing gas leakage and ensuring stable thermal or atmosphere control inside the furnace chamber.
• At the same time, the elastic properties of the locking system effectively compensate for thermal expansion and contraction of refractory materials during heating and cooling cycles. This allows the furnace door and sealing components to freely expand and contract without causing structural stress, deformation, or damage. As a result, long-term durability and sealing reliability are significantly improved.
• The combination of 180-degree side opening and adaptive spring-loaded locking not only enhances operational convenience but also ensures high sealing integrity and mechanical stability. This design is particularly suitable for high-temperature applications requiring frequent access, such as material testing, heat treatment, sintering, and laboratory research, providing both safety and efficiency in demanding working environments.

control

• The furnace adopts advanced closed-loop control technology combined with thyristor module trigger regulation, utilizing a phase-shift triggering method to achieve precise and continuously adjustable output of voltage, current, and power. The system supports constant-voltage, constant-current, and constant-power operating modes, providing high flexibility for different thermal processing requirements and ensuring stable energy delivery throughout the heating cycle.
• A dual-loop control architecture is implemented, consisting of an inner current loop and an outer voltage loop. This nested control structure enables fast dynamic response and highly stable regulation performance under varying load conditions. When a sudden load change occurs or the load current exceeds the preset limit, the system automatically restricts the output current within the rated range, ensuring safe operation of both the power supply and the heating system.
• At the same time, the voltage loop actively participates in regulation to maintain balanced output conditions. It continuously adjusts system parameters to keep voltage and current within safe operating limits while preserving sufficient control margin. This coordinated regulation ensures smooth operation, minimizes fluctuations, and improves overall thermal stability during processing.
• The system effectively protects heating elements from damage caused by excessive current surges, voltage spikes, or abnormal load conditions. By preventing electrical stress and maintaining stable output characteristics, it significantly extends the service life of key components and enhances equipment reliability.
• Overall, this advanced closed-loop thyristor control system delivers safe, precise, and highly reliable performance, making it ideal for high-temperature furnaces used in laboratory research, material development, sintering, and industrial heat treatment applications.

Specifications

Application areas

• Laboratory vacuum drying, moisture removal, and heat-sensitive material processing for research and quality testing.
• Electronic components, semiconductor parts, and precision instruments requiring low-temperature vacuum drying treatment.
• Pharmaceutical, chemical, and material industries for controlled drying, solvent removal, and sample preparation processes.

Why Choose Us

• Stable vacuum performance with high-quality silicone sealing ensures reliable and efficient drying results.
• Precise PID temperature control provides accurate heating and consistent process repeatability for all applications.
• User-friendly design with easy door operation improves efficiency and reduces workload in daily laboratory use.

FAQ

Q1: What is the maximum temperature of the vacuum drying oven?
A: The oven operates up to 250°C with stable PID temperature control for precise drying applications.

Q2: How is the vacuum seal ensured?
A: A high-quality silicone sealing ring ensures airtight sealing and stable vacuum conditions inside the chamber.

Q3: Can the door be opened under vacuum conditions?
A: No, the door can only be opened safely after vacuum release to ensure operator safety and system protection.

Q4: What timer functions are available?
A: The system supports manual and automatic timing with selectable units including hours, minutes, and seconds.

Q5: What happens when the timer ends?
A: The system triggers an alarm and automatically shuts down to ensure safety and prevent overheating or damage.