如何選擇防爆型高溫油溫控制單元？

Q: How to Select an Explosion-Proof High-Temperature Oil Temperature Control Unit?

A: The selection of an explosion-proof high-temperature oil temperature control unit must adhere to the following core principles:

1. Clarify Explosion-Proof Requirements
   The primary step is to confirm the explosion-proof rating of the equipment’s intended operating area (e.g., Ex d IIB T4). The selected model must possess the corresponding national explosion-proof certification to ensure safety and regulatory compliance.
2. Calculate Thermal Load and Power
   Accurately calculate the required heating power based on the target process temperature, heating time, medium flow rate, and the heat dissipation of the mold or reactor. This prevents selecting an underpowered or overpowered unit.
3. Determine System Parameters

Select high-temperature resistant heat transfer oil based on the maximum operating temperature.

Choose the head (pressure) and flow rate of the explosion-proof circulating pump according to the system’s pipeline pressure loss and required flow.

The materials for the heat exchanger and piping must withstand high temperatures and resist corrosion.

4. Evaluate Control and Safety Systems
   Opt for a microcomputer-based control system equipped with multiple safety protections (e.g., overtemperature, overpressure, low oil level, leakage detection). This ensures process stability and the intrinsic safety of the equipment.

Summary
The core of the selection process is: explosion-proof certification is the prerequisite, accurate power calculation is the foundation, matching the system configuration is crucial, and robust safety controls are the safeguard. It is recommended to finalize the selection after detailed communication with professional manufacturers regarding the specific operating conditions.