Safety Protection Devices of High and Low Temperature Humidity Test Chamber

1. Refrigeration System Protection

- Compressor Overpressure Protection: Real-time monitors compressor internal pressure. Automatically triggers protection when pressure exceeds the safety threshold to avoid overpressure damage and ensure stable refrigeration system operation.

- Compressor Overheating Protection: Equipped with overheating detectors to sense compressor operating temperature. Immediately cuts off the circuit when overheated to prevent winding burnout and extend equipment service life.

- Compressor Overcurrent Protection: Monitors compressor current via a detection module. Rapidly cuts off power when current is abnormally high to avoid damage to the compressor and related electrical components.

- Refrigerant Pressure and Overload Protection Device: Monitors refrigerant circulation pressure to prevent system damage from leakage or abnormal pressure; protects against refrigeration system overload to ensure safe operation.

2. Test Chamber Protection

- Adjustable Overtemperature Protection: Flexibly sets overtemperature thresholds to adapt to different samples' temperature tolerance. Triggers protection promptly when the test chamber temperature reaches the set threshold.

- Three-Layer High-Temperature Overtemperature Protection: Hierarchical design: 1) Basic overtemperature protection linked with test control logic; 2) Electronic device for fast response; 3) Ultimate barrier to cut off heat source under extreme high temperature, ensuring sample and equipment safety.

- Fan Motor Overcurrent Protection: Provides overcurrent protection for circulating fan motor. Cuts off power quickly when current exceeds standard due to abnormal load or jamming to prevent burnout and ensure normal temperature uniformity circulation.

- Fault Abnormality Protection: Monitors equipment operation. Cuts off control power immediately to prevent fault expansion when abnormalities (e.g., temperature runaway, motor failure) occur; outputs fault indication and alarm signals for quick troubleshooting.

- Active Water Shortage Prompt: Equipped with water level sensor. Issues acousto-optic prompt when water level is too low, reminding timely replenishment to avoid test disruption or humidification component damage.

- Dynamic High and Low Temperature Protection: Intelligent adaptive adjustment. Dynamically modifies protection values according to test temperature curve to ensure test smoothness and intervene promptly in abnormal temperature fluctuations, improving safety and accuracy.

3. Other Protections

- Main Power Phase Sequence and Phase Loss Protection: Monitors power phase sequence and phase presence. Cuts off main power immediately on phase sequence error or loss to prevent motor reversal and electrical component burnout, ensuring overall electrical safety.

- Short Circuit Protection: Equipped with short circuit protectors. Fuses or trips quickly to cut off fault circuit when short circuit occurs, avoiding fires and equipment damage.

- Leakage/Surge Prevention Protection: Multi-layer design: leakage circuit breaker ensures operator safety; FUSE and RC electronic components suppress grid surges, protecting precision electronic parts.

- Controller Internal Automatic Detection Protection: Real-time detects core temperature/humidity sensor. Triggers protection and fault prompt on sensor abnormality to avoid test deviation or equipment misoperation.

- Water Cutoff and Dry Burning Protection: Dual protection: prevents humidification system damage from water cutoff idling; avoids electric heating component burnout in water-free state, ensuring humidification and heating system safety.

- Expansion Protection Device: Reserves two fault detection input interfaces for additional protection components or upgrades, enhancing system expandability and adaptability.

Summary

The test chamber's safety protection devices form a comprehensive, multi-level system covering refrigeration, test chamber and electrical systems. Integrating real-time monitoring, early warning and rapid response, they effectively prevent equipment damage from abnormalities (overpressure, overheating, etc.), protect samples and operators. Reserved expansion interfaces enhance flexibility and adaptability, ensuring stable, safe and reliable operation under various conditions.