Product Details

AC contactor is commonly used as an actuating element in temperature control cabinets to control the power supply of heating or cooling equipment, thereby maintaining a set temperature. Below is a brief introduction to the application of AC contactors in temperature control cabinets:

Temperature Control Cabinet Basic Concept

A temperature control cabinet is a device that provides a stable temperature environment, widely used in laboratories, industrial production, material testing, and other fields. It regulates the internal space temperature through built-in heating or cooling systems, precise temperature sensors, and controllers.

Role of AC Contactor

An AC contactor acts as a "switch" in a temperature control cabinet, capable of carrying and interrupting high currents to control the power supply of heaters or cooling systems. When the temperature is below the set value, the contactor closes, allowing current to pass through the heating element, thereby raising the temperature; when the temperature reaches or exceeds the set value, the contactor opens, cutting off the power to the heating element to prevent overheating.

Control Principle

The temperature controller in the temperature control cabinet continuously monitors the internal temperature and compares it with the preset temperature value. If the actual temperature is lower than the set temperature, the controller sends a signal to the AC contactor to close it, and the heater starts working. Once the temperature reaches the set value, the controller opens the contactor to stop heating, thereby maintaining a constant temperature.

Structure and Working Principle

• Electromagnetic System: The electromagnet of the contactor generates a magnetic field upon receiving a signal from the controller, attracting the iron core to move.
• Contact System: Includes main contacts and auxiliary contacts. The main contacts are responsible for carrying high currents, connecting or disconnecting the power supply of the heater; auxiliary contacts are used for control circuits or signal feedback.
• Auxiliary System: May include components such as release springs to ensure that the contacts can open quickly when no electromagnetic force is applied.

Safety and Reliability

To ensure the safety and reliability of the temperature control cabinet, AC contactors usually have certain overload protection capabilities, automatically disconnecting the circuit in case of overheating or overcurrent to prevent equipment damage.

Intelligent Trend

Modern temperature control cabinets may also integrate intelligent AC contactors, which can self-adjust based on ambient temperature and working conditions, such as using PWM (Pulse Width Modulation) technology to optimize heating efficiency and extend contactor life.

In summary, AC contactors are an indispensable part of temperature control cabinets, helping to achieve precise temperature control by controlling the power supply of heating or cooling systems.

Uses of Silicon Carbide Temperature Control Cabinet
A silicon carbide (SiC) temperature control cabinet is a device specifically designed to control and maintain specific temperature conditions, commonly used in industrial and scientific research fields. The use of silicon carbide as a key material in such temperature control cabinets is primarily due to its excellent physical and chemical properties, such as high thermal stability, good thermal conductivity, high temperature resistance, and corrosion resistance, making silicon carbide an ideal material for manufacturing heating elements and sensors used in high-temperature environments.

Silicon Carbide Temperature Control Cabinet Main Uses Include:

1. Industrial Processing:

   • In industries such as metal smelting, ceramic sintering, glass manufacturing, and heat treatment, silicon carbide temperature control cabinets can precisely control the heating process, ensuring consistency and accuracy of process temperature, which is crucial for product quality and production efficiency.

2. Scientific Research Experiments:

   • In laboratories, silicon carbide temperature control cabinets can be used for high-temperature experiments in materials science, chemical synthesis, bioengineering, and other fields, providing a stable temperature environment.

3. Semiconductor Manufacturing:

   • In the semiconductor industry, especially in the production of silicon carbide-based devices, strict temperature control is required to ensure the crystal quality of the material.

4. Temperature Sensor Testing:

   • During the development and calibration of temperature sensors, silicon carbide temperature control cabinets can provide a stable high-temperature test platform to verify the accuracy and reliability of the sensors.

5. Aging and Durability Testing:

   • For products that require aging tests or durability evaluation at high temperatures, such as electronic components, batteries, insulating materials, etc., silicon carbide temperature control cabinets provide the necessary test environment.

Specific to SZ-WKG-800KW Intelligent Temperature Control Cabinet Features:

• Adjustable Range: This model can adjust temperature from room temperature up to 480°C (silicon carbide radiant heating) or 700°C (high-alumina radiant heating), suitable for a wide range of heating needs.

• Measurement Accuracy: High-precision temperature measurement is crucial for accurate temperature control. The measurement accuracy of this device for reactor heating under self-tuning state can reach 0.2%FS±1d.

• Adjustment Method: PID parameter self-tuning, power regulation, voltage regulation, and manual/automatic switching functions ensure flexible and precise temperature control strategies.

In summary, silicon carbide temperature control cabinets play an important role in multiple industries due to their excellent performance, especially in applications requiring high temperature and precise temperature control.